Dell VNX5600 White Paper: Virtual Data Movers on EMC VNX

Dell VNX5600 Manual

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  • Dell VNX5600 | White Paper: Virtual Data Movers on EMC VNX - Page 1
    White Paper Virtual Data Movers on EMC VNX Abstract This white paper describes the high availability and portable capability of the Virtual Data Mover (VDM) technology delivered in the EMC® VNX™ series of storage platforms. VDMs are delivered standard with the VNX Operating Environment. March 2016
  • Dell VNX5600 | White Paper: Virtual Data Movers on EMC VNX - Page 2
    Copyright © 2016 EMC Corporation. All Rights Reserved. EMC believes the information in this publication is accurate as of its publication date. The information is subject to change without notice. The information in this publication is provided "as is." EMC Corporation makes no representations or
  • Dell VNX5600 | White Paper: Virtual Data Movers on EMC VNX - Page 3
    20 Limitations: ...21 File System Level Migration 21 Things that will be migrated during a file system level migration 22 Limitations: ...23 Troubleshooting ...23 Use cases and test results 24 Disaster Recovery with Replication, Checkpoints, and VDMs 24 Boston ...24 Miami...25 Virtual Data
  • Dell VNX5600 | White Paper: Virtual Data Movers on EMC VNX - Page 4
    Interoperability...27 Conclusion ...27 References ...27 Virtual Data Movers on VNX 4
  • Dell VNX5600 | White Paper: Virtual Data Movers on EMC VNX - Page 5
    looking for an overview of the standard VDM functionality that is included in VNX series storage systems. Technology Introduction VDMs contain the data needed to support one or more CIFS and/or NFS servers and their file systems. Each VDM has access only to the file systems mounted to that VDM
  • Dell VNX5600 | White Paper: Virtual Data Movers on EMC VNX - Page 6
    the physical Data Mover level. Operations performed at the Data Mover level affect all VDMs. These operations include: • Stop, start, or delete services (CIFS, MPFS, viruschk) • Data Mover failover • Parameter changes Figure 1 shows the VDM configuration within the physical Data Mover. Virtual Data
  • Dell VNX5600 | White Paper: Virtual Data Movers on EMC VNX - Page 7
    Figure 1: VDM root file systems within a physical Data Mover Table 1 lists the location of certain configuration files relevant to a physical Data Mover and a VDM. Table 1: Data Mover configuration files Configuration Files Default CIFS database   Security  Networking 
  • Dell VNX5600 | White Paper: Virtual Data Movers on EMC VNX - Page 8
    to move the VDM, the network interfaces used by its CIFS servers must be available on the destination Data Mover. VDMs within a VDM are not supported. Virtual Data Movers on VNX 8
  • Dell VNX5600 | White Paper: Virtual Data Movers on EMC VNX - Page 9
    Before VDM creation, consider the following: • If you do not specify the state, the VDM is created in the loaded (default) state. • If you do not specify a name for the VDM or its root file system, a default name is assigned. See Planning for more information about VDM naming conventions. • The VDM
  • Dell VNX5600 | White Paper: Virtual Data Movers on EMC VNX - Page 10
    is not limited to, static files, DNS, or the Windows Internet Naming Service (WINS). Planning Considerations VDM Names When naming a VDM, it is recommended Internationalization modes The VNX supports clients in environments that use multibyte character sets. When supported, multibyte character sets
  • Dell VNX5600 | White Paper: Virtual Data Movers on EMC VNX - Page 11
    Backing up VDMs with NDMP A full path is required to back up VDM-mounted file systems with NDMP backup and the server_archive command. An NDMP example is /root_vdm_Marketing/fs. A server archive example is: server_archive -w -f /dev/clt4l0/ -J /root_vdm_Marketing/fs. Antivirus In
  • Dell VNX5600 | White Paper: Virtual Data Movers on EMC VNX - Page 12
    to a NFS endpoint. • The VDM for NFS multidomain feature needs to be administered by using the CLI, the GUI is not supported. • IP replication failover support for Local Groups must include VDMs. • All VDMs share the Replay cache (XID cache). VDM Replication VDMs can be individually replicated by
  • Dell VNX5600 | White Paper: Virtual Data Movers on EMC VNX - Page 13
    please consult the Using VNX Replicator document. Additional information for VNX Replicator can be found on EMC Online Support. VDM MetroSync VDM MetroSync is a Disaster Recovery (DR) solution for VNX2 File which leverages a MirrorView/S replication session to create a zero data loss replication
  • Dell VNX5600 | White Paper: Virtual Data Movers on EMC VNX - Page 14
    SRDF can be used to replicate a VDM environment at the cabinet-level. For additional information, please consult the SRDF product page on EMC Online Support. Replicating a VDM for NFS with ESX datastore When replicating VDM for NFS file systems used for ESX datastores, use the following procedure to
  • Dell VNX5600 | White Paper: Virtual Data Movers on EMC VNX - Page 15
    migrations and allows customers to maintain their Disaster Recovery solution throughout the migration process. This prevents the need to rebuild the Disaster Recovery solution manually and perform a full copy of the data. The migration commands must be run from the Virtual Data Movers on VNX 15
  • Dell VNX5600 | White Paper: Virtual Data Movers on EMC VNX - Page 16
    GUI. The GUI can be downloaded from EMC Online Support by searching VNX File Migration Tool. Complete migrations can it will launch a step by step guide. System Configuration Migration The system configuration Data Mover Services o DNS o NIS o NTP o passwd and group files
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    however, choose the -overwrite_destination option to enforce a migration of all DNS (and other service) settings from Source to Destination. The customers can choose to configure DNS on the destination DM manually. In this case the configuration tool will not migrate the DNS configuration. NTP The
  • Dell VNX5600 | White Paper: Virtual Data Movers on EMC VNX - Page 18
    . • You need to reconfigure them through MMC on the destination manually after migration. Netgroup The netgroup file will be migrated from the are a few scenarios to consider when migrating the Usermapper service:If the Usermapper service is primary on the source: 1. Backup destination Usermapper
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    2. The system will ask the user to disable the destination or enabled source manually and then retry the migration. If the destination DM is configured with the Usermapper service, the administrator can overwrite the configuration if necessary. • This overwrite case should only be used to redo a
  • Dell VNX5600 | White Paper: Virtual Data Movers on EMC VNX - Page 20
    , and the throughput to the source file systems. See the Using VNX File Migration Tech Note for more information located on EMC Online Support. Things that will be migrated during a VDM level migration: • VDM root file system. • All file systems mounted to the VDM. • Read-only checkpoints
  • Dell VNX5600 | White Paper: Virtual Data Movers on EMC VNX - Page 21
    SavVol in order to reduce space usage. If creating the destination file system manually, then this destination FS must be empty, mounted to DM or VDM as can be found in the Using VNX Replicator document on EMC Online Support. The destination FS retains the same name as the source if possible
  • Dell VNX5600 | White Paper: Virtual Data Movers on EMC VNX - Page 22
    If the destination is a VDM, the system will try to create and use the same mount point name on the destination side. If the same mount point name is already used by another file system, the migration will fail. The system cannot guarantee that the FSID will be preserved on the destination. The FSID
  • Dell VNX5600 | White Paper: Virtual Data Movers on EMC VNX - Page 23
    NOT supported in FS Level Migration. o The component file systems of NMFS are supported. • A Migration File System (MGFS) is NOT supported. Neither are found, verify the VDM and VNX system logs (just as you would troubleshoot a physical Data Mover). Optionally, verify the state of the VDM. If the
  • Dell VNX5600 | White Paper: Virtual Data Movers on EMC VNX - Page 24
    for VDMs is described below: Company ABC experienced a substantial growth in the demands for their services in a year and also projected a growth of approximately 40 percent over the next few years. To support this growth, the company planned to expand the business to a location outside of Boston
  • Dell VNX5600 | White Paper: Virtual Data Movers on EMC VNX - Page 25
    • Eng_User • Eng_Shared The share names for the source-user file systems are: • User_Files • Shared_Files Figure 6: Configuration of primary site Miami The VNX administrator needs to configure replication sessions for the Engineering VDM and the two file systems. Repv2 creates correctly sized and
  • Dell VNX5600 | White Paper: Virtual Data Movers on EMC VNX - Page 26
    Figure 7: Disaster recovery replication Virtual Data Movers on VNX 26
  • Dell VNX5600 | White Paper: Virtual Data Movers on EMC VNX - Page 27
    the destination site can be brought up and all of the home directory services function as they did before the event. Conclusion VNX enables users to VNX User mapping To locate the VNX File migration Tool search EMC Online Support for VNX File Migration Tool. There you will find a zip that includes
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White Paper
Abstract
This white paper describes the high availability and portable
capability of the Virtual Data Mover (VDM) technology delivered
in the EMC
®
VNX
™
series of storage platforms
.
VDMs are
delivered standard with the VNX Operating Environment.
March 2016
Virtual Data Movers on EMC VNX