Virtual Data Movers Upon completion of this module, you should be able to: • Describe Virtual Data Mover and its benefits and operations • Create and manage Virtual Data Movers on a VNX system Copyright © 2014 EMC Corporation. All Rights Reserved. Virtual Data Movers 1 Virtual Data Movers Lesson 1: Virtual Data Mover Overview During this lesson the following topics are covered: • VNX Virtual Data Mover (VDM) feature overview • Benefits that VDMs provide to CIFS and NFS file storage • VDM operations Copyright © 2014 EMC Corporation. All Rights Reserved. Virtual Data Movers 2 Virtual Data Mover Overview NFS Server CIFS Server • A “software” Data Mover • Supports: Multiple CIFS servers An NFS server for single domain namespace VDM Root File System • Access data file system(s) and: Data File System Virtual Data Mover Shares for CIFS servers Exports for NFS server • A “virtual container” Holds configuration data for CIFS and NFS servers, shares and exports Portable - can be moved or replicated to another physical Data Mover Copyright © 2014 EMC Corporation. All Rights Reserved. Virtual Data Movers 3 Configuration held within each VDM • Root file system: • • root_fs_<vdm_x> Mounted data file systems CIFS server specific data: CIFS server configurations Local Group DB Kerberos Information CIFS share DB Home directory information Audit and event logs Secmap • NFS server specific data: NFS server endpoint and exports Name resolvers and STATD NFS Server CIFS Server Secmap root_fs_vdm_1 data_FS CIFS Server names and interfaces Local Groups database Kerberos Information CIFS share database Home Directories Event logs NFS server endpoint and namespace STATD hostname NFS exports Interfaces Virtual Data Mover hostname Copyright © 2014 EMC Corporation. All Rights Reserved. Virtual Data Movers 4 Data Mover Feature & Configuration Information Physical Virtual FTP/SFTP/FTPS Yes No DNS/NIS/NTP/Routing Yes No Network Interfaces Yes No Internationalization Yes No Virus Checker Yes No Local passwd & group files Yes No Primary/Secondary Usermapper Yes No Standby Data Mover Yes No Parameters Yes No Start/Stop CIFS Yes No Usermapper client Yes Yes Secmap Yes Yes File Systems Yes Yes NFS Yes Yes CIFS info (Local groups, shares, home dirs, interface & server names, audit logs, Kerberos) Yes Yes Feature/Config Info Copyright © 2014 EMC Corporation. All Rights Reserved. Virtual Data Movers 5 Virtual Data Mover Benefits • Ease of management of CIFS servers • Server isolation and security • Independent CIFS configurations on the same Data Mover • Load balancing • Migration and replication solution • NFS multiple domain solution Copyright © 2014 EMC Corporation. All Rights Reserved. Virtual Data Movers 6 Operational Virtual Data Mover • The physical Data Mover has the VDM root file system mounted • The VDM’s NFS and CIFS servers are available on interfaces • The VDM has the data file system mounted to its root file system NFS Server Interface Interface NFS Server CIFS Server Interface Interface CIFS Server Interface Interface NIS, DNS & NTP Client root_fs_vdm_1 Root File System / /root_vdm_1 Physical Data Mover Copyright © 2014 EMC Corporation. All Rights Reserved. Mount DataFS / /DataFS Configuration Files Mount / /share /export Virtual Data Mover Virtual Data Movers 7 Moving a VDM Storage > Shared Folders > CIFS > VDMs > Properties • VDM is moved to another physical Data Mover VDM unmounts data file systems VDM unloads from source physical Data Mover VDM loads on target physical Data Mover VDM mounts data file systems Copyright © 2014 EMC Corporation. All Rights Reserved. Virtual Data Movers 8 Unloading a VDM Storage > Shared Folders > CIFS > VDMs > Properties • VDM Stops running on physical Data Mover Data file system(s) must be VDM NFS/CIFS unmounted from VDM servers stop Data Mover unmounts VDM root file system VDM stops access to Data Mover resources Copyright © 2014 EMC Corporation. All Rights Reserved. Virtual Data Movers 9 Virtual Data Movers Lesson 1: Summary During this lesson the following topics were covered: • VNX Virtual Data Mover (VDM) feature overview • Benefits that VDMs provide to CIFS and NFS file storage • VDM operations Copyright © 2014 EMC Corporation. All Rights Reserved. Virtual Data Movers 10 Virtual Data Movers Lesson 2: Create and Manage Virtual Data Movers During this lesson the following topics are covered: • Virtual Data Mover creation • VDM states • VDM Implementation considerations for: Naming Internationalization NFS Portability Copyright © 2014 EMC Corporation. All Rights Reserved. Virtual Data Movers 11 Creating a VDM via Unisphere Storage > Shared Folders > CIFS > VDMs > Create Copyright © 2014 EMC Corporation. All Rights Reserved. Virtual Data Movers 12 VDM States • Loaded – normal operational state • Unloaded – inactive state Copyright © 2014 EMC Corporation. All Rights Reserved. • Mounted – read-only state Virtual Data Movers 13 Summary of VDM States VDM State NFS/CIFS Servers active? VDM root file system state? Data file system state? VDM reloaded at boot? Loaded (Default) Yes Mounted (read/write) Accessible Yes Mounted No Mounted (read-only) Inaccessible No TempUnloaded No Unmounted Inaccessible Yes PermUnloaded No Unmounted Inaccessible No Copyright © 2014 EMC Corporation. All Rights Reserved. Virtual Data Movers 14 VDM Naming Considerations • VDM names must be unique Avoid VDM name conflicts within VNX and if replicating to another VNX system Renaming a VDM renames its root file system. Replicator Copyright © 2014 EMC Corporation. All Rights Reserved. Virtual Data Movers 15 Internationalization Mode Considerations • When created, VDM is set to internationalization mode of source physical Data Mover When VDM is moved or replicated, target Data Mover internationalization mode must match VDM’s mode Copyright © 2014 EMC Corporation. All Rights Reserved. Virtual Data Movers 16 Considerations for NFS on VDMs • VDM supports NFSv3 and NFSv4 over TCP protocol UDP not supported • Supports a single NFS domain naming space per VDM • NFS configuration on VDMs is performed with CLI only Refer to Configuring Virtual Data Movers on VNX document NFSv3/v4 TCP Copyright © 2014 EMC Corporation. All Rights Reserved. Virtual Data Movers 17 VDM Portability Considerations • Networks and network services for source and target Data Movers DNS/LDAP/NIS, NTP Interface names for NFS and CIFS servers • Disk volumes and file systems NTP DNS NIS LDAP Copyright © 2014 EMC Corporation. All Rights Reserved. Virtual Data Movers 18 Virtual Data Movers Lesson 2: Summary During this lesson the following topics were covered: • Virtual Data Mover creation • VDM states • VDM Implementation considerations Copyright © 2014 EMC Corporation. All Rights Reserved. Virtual Data Movers 19 Summary Key points covered in this module: • A Virtual Data Mover (VDM) is a VNX software-based Data Mover • Considerations for implementing VDMs include: Naming Internationalization Portability Copyright © 2014 EMC Corporation. All Rights Reserved. Virtual Data Movers 20