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Dell PowerVault NX3600 Administrator's Manual
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Dell PowerVault NX3600 Administrator's Manual

Fluidfs nas solutions
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Dell FluidFS NAS Solutions
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  • Page 1 Dell FluidFS NAS Solutions Administrator's Guide...

  • Page 2: Notes, Cautions, And Warnings

    CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death. © 2012 Dell Inc. Trademarks used in this text: Dell , the Dell logo, Dell Precision , OptiPlex , Latitude...

  • Page 3: Table Of Contents

    Contents Notes, Cautions, and Warnings....................2 1 Introduction..........................11 ..........................11 Terms Used In The Document ........................12 Dell FluidFS NAS Solutions Architecture ..............................13 Key Features ..........................14 NAS Cluster Solution Views ...............................14 System Components ..............................14 NAS Appliance ..............................15 Storage Arrays ..............................15 SAN Network ............................15 Interconnect Network .............................15...
  • Page 4 3 Using Volumes Shares And Quotas..................25 ................................25 NAS Volumes ............................25 Usage Considerations ................................26 Solution 1 ................................26 Solution 2 ................................27 Solution 3 ..........................27 Managing NAS Volumes ............................27 Adding A NAS Volume ..........................27 Modifying A NAS Volume ..........................28 Removing A NAS Volume ..............................28 Shares And Exports ............................28...
  • Page 5 .....................41 Restoring A NAS Volume From A Snapshot ................................41 Replication ............................42 Replication Partners ..........................44 NAS Replication Policies ..................45 Pausing, Resuming, And Running The NAS Replication ...........................45 Deleting A Replication Policy .......................46 Disaster Recovery Using Replication ..........................49 Backing Up And Restoring Data ....................49 Backing Up Replication Target NAS Volumes ..........................49...
  • Page 6 ............................58 Viewing Local Groups ............................58 Adding A Local Group ............................59 Deleting A Local Group ................................59 Authentication ....................59 Configuring An Identity Management Database ................59 Enabling User Authentication Through An NIS Database ................60 Enabling User Authentication Through An LDAP Database ............60 Disabling The Use Of An External UNIX Identity Management Database ..............................60 Active Directory ............60...
  • Page 7 ........................69 Configuring Advanced Options ..............................69 Configuring SNMP 6 Troubleshooting.........................71 ..........................71 Troubleshooting CIFS Issues ............71 Misconfigured AV Host Settings Result In Access Denied To CIFS files ............................71 CIFS Access Denied ............................71 CIFS ACL Corruption ............................72 CIFS Client Clock Skew ......................72 CIFS Client Disconnection On File Read ........................72 CIFS Client General Disconnection ...........................72...
  • Page 8 Cannot Modify NAS Files ..........................87 Mixed File Ownership Denied ....................88 Problematic SMB Access From A Linux Client ................88 Strange UID And GID Numbers On Dell NAS System Files ........................88 Troubleshooting Networking Issues ..........................88 Name Server Unresponsive ..............89 Specific Subnet Clients Cannot Access The NAS Cluster Solution .......................89...
  • Page 9 Upgrading The Service Pack Using The NAS Manager .....................102 Expanding The NAS Cluster Storage Capacity ......102 Expanding The NAS Pool On The Dell PowerVault NX3500/NX3600/NX3610 NAS Solution ................102 Expanding The NAS Pool On The FS8600 NAS Solution ........103 Adding LUNs To The PowerVault NX3500/NX3600/NX3610 NAS Cluster Solution .............................103...
  • Page 10 ...................................115 NDMP ................................115 Replication 10 Getting Help..........................117 ..............................117 Contacting Dell...

  • Page 11: Introduction

    Introduction The Dell FluidFS network attached storage (NAS) solution is a high-availability storage solution. The solution aggregates multiple NAS controllers in a cluster and presents them to UNIX, Linux, and Microsoft Windows clients as one virtual file server. Terms Used In The Document...

  • Page 12: Dell Fluidfs Nas Solutions Architecture

    NAS controllers, a storage subsystem, and the NAS Manager. Standby controller A NAS controller that is installed with the FluidFS software but not part of a cluster. For example, a new or replacement controller from the Dell factory is considered as a standby controller. SAN network The network that carries the block level traffic and to which the storage subsystem is connected.

  • Page 13: Key Features

    Figure 1. FluidFS NAS Cluster Solution Architecture NOTE: Dell Compellent FS8600 NAS solution uses an additional Interconnect network, which is not represented in this illustration. Key Features The NAS cluster solution: • Helps administrators expand existing capacity and improve performance when needed, without impacting the applications or users.

  • Page 14: Nas Cluster Solution Views

    • Is capable of providing user-accessible Point-In-Time snapshots. • Is capable of sharing files with Microsoft Windows, Linux, UNIX, and Mac users. • Offers flexible, automated online replication and disaster recovery. • Features built-in performance monitoring and capacity planning. NAS Cluster Solution Views You can access the NAS cluster solution as a client or an administrator depending on the access privileges you have.

  • Page 15: Storage Arrays

    VIPs that serve the system depends on the number of client ports available to you, for example, a Dell Compellent FS8600 (1 GbE) with four appliances has 32 Client VIPs. For flat networks, only one client VIP...

  • Page 16: Other Information You May Need

    • For the full name of an abbreviation or acronym used in this document, see the Glossary at support.dell.com/ manuals. NOTE: Always check for updates on support.dell.com/manuals and read the updates first because they often...

  • Page 17: Monitoring The Fluidfs Nas Solution

    NAS appliances. Capacity The Capacity section displays a table and pie chart showing the total net capacity of the Dell Fluid File System. Current Performance The Current Performance section displays the current network throughput. The current network throughput includes...

  • Page 18: Recent Performance

    Copy and paste the events in a CSV file or save web page as a CSV file. Network Performance The Network Performance Over Time page displays Dell Fluid File System performance over time. You can view the network performance of FluidFS for the following periods of time: •...

  • Page 19: Load Balancing

    • Client Network Throughput—Write • Operations Per Second • Network Aggregated Throughput Online Help . NOTE: For more information on Network Performance Over Time, see the Load Balancing You can view the following load balancing details: • Over Time • Client Connections •...
  • Page 20 The Client Connections page is displayed. By default, the Clients tab displays a list of all the client connections. Select the appropriate filters in the Protocols and Controller lists. The client connections table displays the events depending on the parameters selected. To sort the client connections, click the column headings of the client connections table.

  • Page 21: Managing Cifs Connections

    Select Monitor → Load Balancing → Client Connections. The Client Connections page is displayed. By default, the Clients tab displays a list of all the client connections. Click Migration Policy. The Migration Policy page is displayed. For each Protocol, select the appropriate migration policy for the Client Network. Click Save Changes.

  • Page 22: Capacity

    Service Tag shown in the popup window with the Service Tag printed on a sticker on the front right ear of the appliance. Capacity Viewing Space Utilized The Space Utilization page displays the Dell Fluid File System space utilization and Dell Fluid File System space utilization over time. To view the space utilized: Select Monitor →...

  • Page 23: Ndmp

    NDMP You can view the status and progress of the NDMP active jobs in the NDMP Active Jobs page.

  • Page 25: Using Volumes Shares And Quotas

    Using Volumes Shares And Quotas The User Access tab enables you to define and manage the Dell Fluid File System from the client perspective. NAS Volumes A NAS volume is a subset of the storage pool, with specific policies controlling its space allocation, data protection, and security style.

  • Page 26: Solution 1

    • Quotas — Quotas are also defined per NAS volume. Different quota policies can be applied to different NAS volumes, allowing the administrator to focus on managing quotas when it is appropriate. Some of the usage examples are copy operations, list operations, and move operations. The following table provides an example of an organization that has various departments and how NAS volumes can be created.

  • Page 27: Solution 3

    NOTE: A NAS volume must have a minimal size of 20 MB and its maximum size can be all the available space. In Alert when used space reaches , enter a percentage of the allocated space. From the Send email alerts to administrator list, select a Dell Fluid File System administrator to whose email address the system sends alerts.

  • Page 28: Removing A Nas Volume

    Change the parameters as required and click Save Changes. NOTE: If you change the allocated space for the NAS volume, the new allocation is bound by its used space (minimum) and the available space in NAS cluster solution (maximum). Removing A NAS Volume The selected NAS volume is deleted.

  • Page 29: Modifying An Nfs Export

    NOTE: Other users are identified as guests. Define the client machines that are allowed to access this NFS export. Select one of the following options: – All Client Machines. – A Single Client Machine—You must enter the IP or Domain Name for the client. –...

  • Page 30: Managing Cifs Shares

    To mount an NFS export folder on a NAS volume, from a shell on a client system, use the su command to log in as root and run the following command: mount -o hard,tcp,nfsvers=3,timeo=3,retrans=10,rsize=32768,wsize=32768 <FluidFS_Client_VIP>:/<volume_name><exported_folder> <local_folder> For backward compatibility with FluidFS version 1, an NFS export on the default NAS volume can also be mount by: mount -o hard,tcp,nfsvers=3,timeo=3,retrans=10,rsize=32768,wsize=32768 <FluidFS_Client_VIP>:/<volume_name><exported_folder>...
  • Page 31 The Add CIFS Share page is displayed. By default the General tab is selected. From the NAS Volume list, select the appropriate NAS volume. To set up a directory that can be accessed by all users, select General-access Share. a) In Share name, enter the CIFS share name. b) In Directory, enter the path to the directory you want to export or click the Browse button, and navigate to the appropriate directory.

  • Page 32: Modifying A Cifs Share

    Modifying A CIFS Share After you determine whether a CIFS share is a general access directory or user-based directory, you cannot change this setting. To modify the parameters of a specific CIFS share: Click User Access → Shares → CIFS Shares. The CIFS Share page is displayed.

  • Page 33: Setting Access Control Lists And Share Level Permissions On Fluidfs

    This is the account that creates the folders (either using a user create script or manually) for each users home share. Disconnect or unmount the user share, and remount it as an account that has ownership of it, as previously set (as a Domain Admin, Storage Admin, or specific account ownership was set to).

  • Page 34: Setting Acls Or Slps On A Cifs Share

    Setting ACLs Or SLPs On A CIFS Share The first time a CIFS share is created, the owner of the share must be changed before setting any ACLs or attempting to access this share. If the NAS cluster solution is joined to an Active Directory domain, the following methods can be used for setting ACLs: •...

  • Page 35: Configuring Cifs Shares Level Permissions

    \\<Client Access VIP >\<share name> Click OK. The Explorer window is displayed. Option 3 Open Windows Explorer and choose Tools → Map Network Drive. The Map Network Drive dialog box is displayed. From the Drive drop-down list, select any available drive. Type the path in the Folder field or browse to the shared folder.

  • Page 36: Resetting Cifs Local Administrator Password

    Share Permissions for a particular share, when the NAS cluster is accessed directly at \\<client access VIP>, the share will not be presented at all in the list of available shares. Previously, in Dell Fluid File System v1, access based share enumeration was not enabled, therefore the share would be presented, but could not be accessed.

  • Page 37: Managing User Or Group Specific Quotas

    NOTE: When this limit is exceeded, a warning message is sent to the administrator’s e-mail address. This default is used for users for whom an individual quota is not defined. Click Save Changes. Managing User Or Group Specific Quotas Viewing Existing User/Group Specific Quotas To view the details for a specific user or group quota: Select User Access →...
  • Page 38 The User/Group Quota page is displayed. From the NAS Volume list, select the appropriate NAS volume. The User/Group Quota table displays the list of available User/Group Quotas for the selected NAS volume. From the list of available User/Group Quotas, under the Name/ID column, click the relevant User/Group Quota. The Edit Quota page is displayed.

  • Page 39: Protecting Data On The Fluidfs Nas Cluster Solution

    Protecting Data On The FluidFS NAS Cluster Solution Data protection is an important and integral part of any storage infrastructure. You can configure various methods for protecting the data in your Dell Fluid File System, including: • Snapshots • Replication •...

  • Page 40: Creating A Snapshot (Without A Policy)

    Select Weekly to take Snapshots on a weekly basis. a) From the On list, select which day and at what time the snapshot is generated. b) Enter the Number of snapshots to keep. Click Save Changes. Creating A Snapshot (Without A Policy) Select Data Protection →...

  • Page 41: Restoring Data

    CAUTION: The Restore operation cannot be undone. Any data created or changed between the time of the snapshot and when the restore operation is completed, is erased. Replication Replication in the Dell FluidFS NAS solutions is block-based and asynchronous. • Block-based—only blocks that have any changes are replicated and not the entire file •...

  • Page 42: Replication Partners

    Fast backup and restore Maintain full copies of data for protection against data loss, corruption, or user mistakes. Disaster recovery Mirror data to remote locations for failover. Remote data access Applications can access mirrored data in read-only or read-write mode. Online data migration Minimize downtime associated with data migration.
  • Page 43 In Remote NAS management VIP, enter the VIP addresses of the remote system NAS manager. In User name and Password, enter the username and password of an administrator account on the remote system. NOTE: These values are not stored in Dell Fluid File System. Click Save Changes.

  • Page 44: Nas Replication Policies

    In Source NAS volume, enter the source NAS volume or click the Browse button and select the appropriate NAS volume. From the Destination cluster list, select one of the following: – localhost to replicate the source volume in this system. – another available Dell Fluid File System replication partner.

  • Page 45: Pausing, Resuming, And Running The Nas Replication

    – localhost to replicate the source volume in this system. – another available Dell Fluid File System replication partner. In Destination NAS volume, enter the destination NAS volume or click the Browse button and select the appropriate NAS volume. Select one of the following recovery point schedule options: –...

  • Page 46: Disaster Recovery Using Replication

    NOTE: If the replication policy is deleted from the target volume’s system, a warning is issued and the policy must be deleted from the source system as well. To delete the replication policy: Select Data Protection → Replication → NAS Replication. The NAS Replication page displays a list of existing NAS replication policies.
  • Page 47 NOTE: FluidFS 1.1 supports auto generate target volume during addition of the replication policy. For FluidFS 1.0, you must create the target volumes in cluster B and make sure that the volume size is big enough to accommodate the corresponding source volume data in cluster A. Start the replication scheduler to ensure that at least one successful replication has occurred for all the source volumes in cluster A.
  • Page 48 Ensure that the DNS server on cluster B is the same as the DNS server or in the same DNS farm as the DNS server of cluster A. Existing client connections may break and may need to be re-established. You must unmount and remount the NFS Exports on the client.

  • Page 49: Backing Up And Restoring Data

    b) Join AD server or LDAP/NIS. Ensure that the AD and LDAP are in the same AD/LDAP farm or same server. 10. Build up replication structure between source cluster A and backup cluster B, to set up replication policy between cluster A and cluster B, use cluster B volumes as replication target volumes, to prepare for next disaster recover.

  • Page 50: Enabling Ndmp Support

    Enabling NDMP Support NDMP backups are performed using the client network. The DMA must be configured to access one of the client VIPs (or a DNS name) of the NAS cluster. NOTE: Before enabling the NDMP support, a client VIP must be configured on the system. Verify if the client VIP is configure by selecting System Management →...

  • Page 51: Specifying Nas Volume For Backup

    The NDMP Configuration page is displayed. If no empty DMA server fields are available, click Add DMA server. An additional DMA server field is added. In the empty DMA server, enter the IP address of the DMA server. NOTE: DNS names are not supported. Click Save Changes.

  • Page 52: Viewing Existing Antivirus Hosts

    Viewing Existing Antivirus Hosts To view the antivirus hosts defined for the system, select Data Protection → Antivirus → Antivirus Hosts, the Antivirus Hosts page displays the details of the antivirus hosts already defined, its IP address (or name), and the ICAP port. Adding Antivirus Hosts It is recommended to define multiple antivirus hosts to achieve high-availability of virus scanning, and reduce the latencies for file access.

  • Page 53: Managing The Fluidfs Nas Solution

    Managing The FluidFS NAS Solution You can view and set general system information, configure the file system and network parameters and set the required protocols through the Cluster Management tab. In addition, you can also configure the authentication settings. To access the Cluster Management options, launch the NAS Manager. Click the Cluster Management tab. The General Information page is displayed.

  • Page 54: Modifying A Subnet

    From the list of displayed subnets, select the appropriate subnet and click Delete. Managing Administrator Users Administrators can manage the Dell Fluid File System using the Dell Fluid File System CLI or the Web interface. Viewing Administrator Users To view existing administrator users, select Cluster Management → General → Administrators, the Administrators page...

  • Page 55: Adding An Administrator

    Adding An Administrator When defining an administrator, you specify the administrator permission level. Permission levels are predefined in the system. The defined permission levels are as follows: • Administrator • View only The permission level defines the set of actions that are allowed by the user at this level. To add an administrator: In the NAS Manager, select Cluster Management →...

  • Page 56: Changing The Administrator Password

    Changing The Administrator Password WARNING: For Dell Compellent FS8600, if you change the administrator password, the connection between the Enterprise Manager and cluster fails. To re-establish the connection between Enterprise Manager and the cluster, in Enterprise Manager, click Reconnect to FluidFS Cluster after changing the admin password.

  • Page 57: Viewing Local Users

    Viewing Local Users To view the list of existing users, select Cluster Management → Authentication → Local Users, the Local User page displays the list of existing users. Adding Local Users Select Cluster Management → Authentication → Local Users. The Local Users page is displayed. Click Add.

  • Page 58: Deleting Local Users

    In Remarks, enter comments about the user (optional). Click Save Changes. Deleting Local Users Select Cluster Management → Authentication → Local Users. The Local User page displays a list of existing local users. From the list of existing users, select the user name and click Delete. Changing The Password You can change the password of a local user from the Edit User page.

  • Page 59: Deleting A Local Group

    In Group Name, enter the name of the group. In Group ID, enter the identification number of the group. NOTE: Dell Fluid File System groups have ID numbers above 200. NOTE: The group is automatically assigned the next available identification number. You can modify it if required.

  • Page 60: Enabling User Authentication Through An Ldap Database

    In any blank NIS server, enter the name or IP address of the NIS server. To add an NIS server for redundancy purposes, click Add NIS server . An additional NIS server is displayed in the list of NIS servers. To remove an NIS server from the list, select the NIS server that you want to delete and click Delete NIS server(s).

  • Page 61: Network Configuration Overview

    Active Directory domain. In System name, enter the system name. This name identifies the Dell Fluid File System in alerts that the system sends and is also the default name for the Dell Fluid File System when you configure Active Directory.

  • Page 62: Performance And Static Routes

    • Belongs to some of the LAN or Client subnets, in which case some clients are flat and some are routed. In such network configurations it is recommended to use both methods described above, and inform the users about the VIPs they need to use, depending on whether they are flat or routed.

  • Page 63: Configuring Dns

    The solution is to define, in addition to a default gateway, a specific gateway for certain subnets–configuring static routes. To do this you must describe each subnet in your network and identify the most suitable gateway to access that subnet. You do not have to do so for the entire network - a default gateway is most suitable when performance is not an issue.

  • Page 64: Viewing Static Routes

    Viewing Static Routes Select Cluster Management → Network Management → Static Routes, the Static Routes page displays the list of currently defined static routes. Adding Static Routes When defining a static route, you must specify the subnet properties and the gateway through which to access this subnet.

  • Page 65: Configuring Cifs Parameters

    Configuring CIFS Parameters The CIFS Protocol Configuration enables Windows users to connect to the NAS cluster solution system. You can also enable Linux users to access the system using the CIFS protocol, and authenticate them through NIS, LDAP or the NAS cluster solution local users.

  • Page 66: Configuring System Time Parameters

    Click Save Changes. This restarts all user connections. Configuring System Time Parameters You can configure the system's time clock, determine how to automatically update time using an NTP server, and configure the time zone for your system on this page. Synchronizing the time clock is critical for the proper functioning of the system.

  • Page 67: Synchronizing The Nas Cluster Solution With A Local Ntp Server

    The feature(s) from the license file is/are displayed on the licensing screen after the system validates the file and refreshes the screen. Removing A License CAUTION: Removal of licenses must only be performed at the direction of Dell Technical Support.

  • Page 68: Configuring E-Mail Parameters On Powervault Nx3500/Nx3600/Nx3610 Nas Solutions

    Enterprise Manager for all e-mail alerts. For more information, see the Enterprise Manager Users Guide . Dell Fluid File System uses e-mail as the basis for alerting and remote support. You can determine who receives one or all of the following types of messages that Dell Fluid File System sends: •...

  • Page 69: Modifying An Smtp Server Configuration

    In Messages sent in intervals of (seconds), enter the maximum time an alert may wait before it is sent. Click Save Changes. Configuring SNMP Dell Fluid File System supports the Simple Network Management Protocol (SNMP), a commonly used network management protocol that allows SNMP-compatible management functions such as device discovery, monitoring, and event generation.
  • Page 70 In System contact, enter a name for the required contact person. In System location, enter a description for the location of the system. In Read community, enter the SNMP community for devices reading SNMP variables from Dell Fluid File System or use the default value.

  • Page 71: Troubleshooting

    Misconfigured AV Host Settings Result In Access Denied To CIFS files Description The Dell NAS cluster solution supports antivirus scans on a per CIFS share basis. When a file on a share is opened by a client application the NAS cluster solution sends the file to an antivirus host to be scanned.

  • Page 72: Cifs Client Clock Skew

    In case the system identified a general issue with the CIFS service, it automatically recovers but the failure causes all users to be disconnected and the above event to be triggered. Workaround If this issue repeats frequently, contact Dell. CIFS Client Login Failure Description CIFS client login failure. Cause User supplied wrong password upon connection.

  • Page 73: Cifs Connection Failure

    CIFS Connection Failure Description CIFS client share access denied. Cause The user is unknown in the Active Directory server, and the NAS system mapped this user to a guest user. If the share does not allow guest access, the user receives an access denied alert.

  • Page 74: Cifs Guest Account Invalid

    It could be that the application which opened the file did not shut down gracefully. It is recommended to reboot the client if possible. CIFS Guest Account Invalid Description CIFS service cannot start. Cause A valid CIFS guest account is required for CIFS functionality.

  • Page 75: Cifs Path Share Not Found

    Workaround List the available NAS shares and verify that all shares are displayed and nothing has changed unintentionally. Verify that you can access the problematic share using a Windows client: 1. Click Run. 2. Enter the client access VIP and share name: \ \<Client_VIP>\<CIFS_share_name>...

  • Page 76: Troubleshooting Nfs Issues

    Workaround In order to write to this volume, replication must be detached first. Refer the user to the correct location. Troubleshooting NFS Issues Cannot Mount NFS Export Description When attempting to mount an NFS export, the mount command fails due to various reasons such as: •...

  • Page 77: Nfs Export Does Not Exist

    • Check the network connection by trying to NFS mount from some other system. • Verify if other users experience the same problem. If the appliance is not responding due to the program not registered, check if the port mapper on your client is up. If the issue is due to access denied: •...

  • Page 78: Nfs Insecure Access To Secure Export

    If the access is non-native, translation rules come to effect and it is recommended to contact Dell Technical Support. NFS Insecure Access To Secure Export Description User tries to access a secure export from an insecure port. Cause Secure export requirement means that the accessing clients must use a well-known port (below 1024), which usually means that they must be root (uid=0) on the client.

  • Page 79: Nfs Mount Path Does Not Exist

    Workaround Repeat the below process for each configured NIS server, each time leaving just a single NIS used, starting with the problematic NIS server. 1. Inspect the NIS/LDAP server logs and see if the reason for the error is reported in the logs. 2.

  • Page 80: Nfs Owner Restricted Operation

    c. Remove the export and communicate this to the client. 3. List all available exports on the NAS and identify the problematic export. It must have an indication that it is not accessible. 4. Delete the export or create the directory where the export points to.

  • Page 81: Nfs Access Denied To A File Or Directory

    NFS Access Denied To A File Or Directory Description User cannot access the NFS file or directory despite the fact that the user belongs to the group owning the NFS object and the group members are permitted to perform the operation. Cause NFS servers (versions 2 and 3) use the Remote Procedure Call (RPC) protocol for authentication of NFS clients.

  • Page 82: Replication Destination Fs Is Busy

    Replication Destination FS Is Busy Description Replication between the source NAS volume and the destination NAS volume fails because the destination cluster file system is temporarily unavailable to serve the required replication. Cause Replication task fails because the destination cluster is temporarily unavailable to serve the required replication.

  • Page 83: Replication Destination Volume Is Detached

    Administrators must upgrade the system version of the destination cluster to match the system version of the source cluster. Replication Internal Error Description Replication between the source and the destination NAS volumes fails due to an internal error. Workaround Contact Dell to resolve this issue.

  • Page 84: Replication Jumbo Frames Blocked

    Replication Jumbo Frames Blocked Description Replication between the NAS source volume and NAS destination volume fails because the jumbo frames are blocked over the network. Cause Replication task fails because jumbo frames are blocked over the network. Workaround The administrator must verify that the network configuration between the source cluster and the destination cluster has enabled transferring jumbo frames across the switches or routers.

  • Page 85: Replication Source Is Not Optimal

    Replication Source Is Not Optimal Description Replication between the source and the destination NAS volumes fails because the file system of the source NAS volume is not optimal. Cause Replication fails since the file system of the source is not optimal.

  • Page 86: Active Directory Authentication

    Active Directory Authentication Description A valid Active Directory user fails to authenticate. Cause Probable causes may be: • The user is trying to authenticate using a wrong password. • The user is locked or disabled in Active Directory. • Active Directory domain controllers are offline or unreachable.

  • Page 87: Troubleshooting Nas File Access And Permissions Issues

    7. Ensure that you select Authenticate users' identity via Active Directory and local users database. Troubleshooting NAS File Access And Permissions Issues Cannot Change The Ownership Of A File Or A Folder Description Every file on the NAS system is owned by either a UNIX or NTFS user.

  • Page 88: Problematic Smb Access From A Linux Client

    For example, from the NAGIOS Linux management system, use the /check_disk command instead of the /check_disk_smb command. Strange UID And GID Numbers On Dell NAS System Files x clients get the UID and Description New files created from Ubuntu 7.

  • Page 89: Specific Subnet Clients Cannot Access The Nas Cluster Solution

    Specific Subnet Clients Cannot Access The NAS Cluster Solution Description Users (new or old), accessing from specific network(s), cannot access the NAS cluster solution. Cause This issue is due to a conflict between the users' subnet addresses and the NAS system internal network's address.

  • Page 90: Troubleshooting Rx And Tx Pause Warning Messages

    Troubleshooting RX And TX Pause Warning Messages Description The following warning messages may be displayed when the NAS Manager reports connectivity in a Not Optimal state: Rx_pause for eth(x) on node 1 is off. Tx_pause for eth(x) on node 1 is off. Cause Flow control is not enabled on the switch(es) connected to a NAS cluster solution controller.

  • Page 91: Cannot Connect To The Nas Manager

    • There are network problems communicating with the NTP server. Workaround 1. Identify the NAS NTP server from the System Configuration/ Time Configuration page. Record the host name(s) or IP address(es) for further reference. 2. If no NTP server is defined, define one. It is recommended synchronizing the NAS system clock with the NTP server used by the Active Directory Domain Controller (ADDC).

  • Page 92: Troubleshooting Backup Issues

    Workaround • If Java script is disabled, enable Java script. For information about enabling Java script, see the browser's help. • If IE SEC is enabled, disable it. Troubleshooting Backup Issues Troubleshooting Snapshots Description Taking and deleting snapshots fail. Cause Probable causes may be: •...

  • Page 93: Troubleshooting System Issues

    Workaround If the backup application cannot connect to a NAS appliance: 1. Log in to the NAS Manager or open a remote terminal to the appliance. 2. On the NAS Manager, go to Data Protection → NDMP → NDMP Configuration page. In NAS CLI, go to Data Protection NDMP Configuration menu.

  • Page 94: Nas Container Security Violation

    Multiple Errors Received During File System Format Description You receive multiple errors during a file system format. Cause Probable causes may be: • Wrong SAN IPs are used in the Dell NAS Initial Deployment Utility (IDU). • Wrong IQNs used while defining hosts in the MDSM.
  • Page 95 • Uneven number of LUNs are mapped to the host group. • LUN size is below the minimum required size. • Less than minimum number of required LUNs. Workaround If wrong SAN IPs are used while running the NAS IDU: 1.

  • Page 96: Associating Lun Names To Virtual Disks

    1. Verify that more than one LUN is mapped to the host group. The minimum number of LUNs required is 2. 2. If the number of LUNs is less than 2, add LUNs to meet the required minimum LUN count of 2. 3.

  • Page 97: Controller Taking Long Time To Boot Up After Service Pack Upgrade

    Do not reboot the controller manually if it is in the boot phase Executing System Upgrades. Troubleshooting Dell NAS Initial Deployment Utility (IDU) Issues Error Received While Running The Dell NAS Initial Deployment Utility Description Error occurred while running the Dell NAS Initial Deployment Utility (IDU).

  • Page 98: Cannot Launch Dell Nas Initial Deployment Utility (Idu)

    Correct those failures and reconfigure the system using the NAS IDU. 5. If the failure still persists, collect all the files in a bundle package and contact Dell support. Cannot Launch Dell NAS Initial Deployment Utility (IDU) Description Cannot launch Dell NAS Initial Deployment Utility. Cause Probable causes maybe: •...

  • Page 99: Maintaining The Nas Cluster Solution

    This chapter provides information on shutting down and turning on the system in the event of a planned outage or for moving the system to another location. This chapter also discusses the procedure for upgrading the software and running diagnostics. Dell FluidFS NAS Solutions Owner's Manual on support.dell.com, for information on hardware NOTE: See the service and maintenance.

  • Page 100: Restoring Nas Volume Configuration

    Click Next. Restoring NAS Volume Configuration Restoring the NAS volumes configuration provides an effective way for the system administrator to restore all NAS volume settings (exports, shares, snapshots schedule, quota rules, and so on) without having to manually reconfigure them. This is useful after creating a new NAS volume, after a fresh installation of the system, or after recovering a system.

  • Page 101: Formatting File System

    Upgrading The Service Pack Using The NAS Manager Service packs keep your Dell FluidFS NAS solution up to date with the latest firmware and software. Visit support.dell.com and download the latest service packs to keep your system running safely and efficiently.

  • Page 102: Expanding The Nas Cluster Storage Capacity

    After the service pack file is uploaded to the system click Install. Expanding The NAS Cluster Storage Capacity Expanding The NAS Pool On The Dell PowerVault NX3500/NX3600/NX3610 NAS Solution You can expand the storage capacity of your system without affecting the services to the clients. However, the process occurs over a period depending on the total number of the existing and added LUNs, the total storage capacity, and system workload.

  • Page 103: Adding Luns To The Powervault Nx3500/Nx3600/Nx3610 Nas Cluster Solution

    Each LUN can be identified using its world-wide name. In the NAS Manager, the world-wide name of a LUN is prefixed by Dell FluidFS. The unique set of numbers and characters following the prefix is the worldwide name. The Add Luns page is displayed.

  • Page 104: Offline Diagnostics

    Dell Diagnostics MP Memory MP Memory is a Dell-developed, MS DOS-based memory test tool. This tool is efficient for large (greater than 4 GB) memory configurations. The tool supports single-processor or multiprocessor configurations, as well as processors using the Intel Hyper-Threading Technology.

  • Page 105: Reinstalling The Nas Cluster Solution

    A NAS appliance consists of two NAS controllers within a single chassis. You can add a maximum of one appliance at a time. Depending on the Dell NAS solution version, the maximum number of appliances in a cluster solution is four (total eight controllers).
  • Page 106 Channel WWNs Configuration. 10. For Dell Compellent FS8600 NAS solution, the WWN information for the newly added controllers are listed in the upper table under FC WWNs. Note the new WWNs and define the necessary FC zoning conditions on the fibre channel switch before proceeding further.

  • Page 107: Creating A Host In Powervault Nx3500/Nx3600/Nx3610

    Creating A Host In PowerVault NX3500/NX3600/NX3610 For PowerVault NX3500/NX3600/NX3610 NAS solutions, you can create hosts manually using Modular Disk Storage Manager (MDSM). To create a host in the host group you created: Right-click the host group you created. Click Define → Host. The Specify Host Name (Define Host) screen is displayed.

  • Page 108: Detaching The Fluidfs Nas Cluster Solution Controller

    The Controllers Management page is displayed. From the list of available controllers, select the appropriate controller and click Attach. NOTE: The following are additional steps required for the Dell Compellent FS8600 NAS Solutions. NOTE: Fabric zoning must be updated manually on the fibre optic switch.

  • Page 109: Nas Manager Features In Degraded Mode

    NOTE: To view the WWNs at any time using the CLI, execute the following command: system maintenance Luns configuration Fc-view NAS Manager Features In Degraded Mode When the NAS appliance is in degraded mode, the status of the following features in the NAS Manager are either View only or Fail.

  • Page 111: Internationalization

    Internationalization Overview The NAS cluster solution provides full Unicode support allowing support of various languages concurrently. Directories and file names are maintained and managed internally in Unicode format (UTF-8). Regardless of the encoding type used by the client who creates a file, the NAS cluster solution stores its file name or directory name in Unicode format.

  • Page 112: Unicode Configuration Limitations

    Parameter Unicode Character CIFS Server description Home Shares Directory name SNMP Contact Location NFS Exports Directory name CIFS Shares Name Directory Description Users Groups Unicode Configuration Limitations Following are the Unicode configuration limitations: • File Size and Directory Name • Clients Compatibility Problems •...
  • Page 113 Character UNIX Windows Macintosh CENT SIGN (¢) U+00A2 (CENT SIGN) U+FFE0 (FULLWIDTH CENT U+00A2 (CENT SIGN) SIGN) POUND SIGN (#) U+00A3 (POUND SIGN) U+FFE1 (FULLWIDTH U+00A3(POUND SIGN) POUND SIGN) NOT SIGN (¬) U+00AC (NOT SIGN) U+FFE2 (FULLWIDTH NOT U+00AC (NOT SIGN) SIGN) The NAS cluster solution provides a special code page for the CIFS service, to support portability between protocols.

  • Page 115: Frequently Asked Questions

    Frequently Asked Questions NDMP Is NDMP a High Availability (HA) protocol? What happens if a backup session is interrupted due to connection loss? NDMP is not HA. A session that is interrupted is terminated. How does NDMP work? At the beginning of the NDMP session, a Fluid File System (FluidFS) snapshot is taken on the target NAS filesystem. This snapshot is then transferred over to the Data Management Application (DMA).
  • Page 116 Replication utilizes FluidFS snapshot technology and other calculations to ensure the replicated virtual volume's data matches the source virtual volume data at the date and time a replication task was started. Only the blocks that have been modified since the last replication task are transferred over the client network. How long does replication take? This depends on the amount of data on the virtual volume and the amount of data that has changed since the last replication cycle.

  • Page 117: Getting Help

    Visit support.dell.com. Select your support category. If you are not a U.S. customer, select your country code at the bottom of the support.dell.com page, or select All to see more choices. Select the appropriate service or support link based on your need.

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