Storage Foundation and High Availability Solutions 8.0.1 HA and DR Solutions Guide for Enterprise Vault - Windows
- Introducing SFW HA for EV
- About clustering solutions with InfoScale products
- About high availability
- How a high availability solution works
- How VCS monitors storage components
- Shared storage - if you use NetApp filers
- Shared storage - if you use SFW to manage cluster dynamic disk groups
- Shared storage - if you use Windows LDM to manage shared disks
- Non-shared storage - if you use SFW to manage dynamic disk groups
- Non-shared storage - if you use Windows LDM to manage local disks
- Non-shared storage - if you use VMware storage
- About replication
- About disaster recovery
- What you can do with a disaster recovery solution
- Typical disaster recovery configuration
- Configuring high availability for Enterprise Vault with InfoScale Enterprise
- Reviewing the HA configuration
- Reviewing the disaster recovery configuration
- High availability (HA) configuration (New Server)
- Following the HA workflow in the Solutions Configuration Center
- Disaster recovery configuration
- Notes and recommendations for cluster and application configuration
- Configuring the storage hardware and network
- Configuring cluster disk groups and volumes for Enterprise Vault
- About cluster disk groups and volumes
- Prerequisites for configuring cluster disk groups and volumes
- Considerations for a fast failover configuration
- Considerations for disks and volumes for campus clusters
- Considerations for volumes for a Volume Replicator configuration
- Sample disk group and volume configuration
- Viewing the available disk storage
- Creating a cluster disk group
- Creating Volumes
- About managing disk groups and volumes
- Importing a disk group and mounting a volume
- Unmounting a volume and deporting a disk group
- Adding drive letters to mount the volumes
- Deporting the cluster disk group
- Configuring the cluster
- Adding a node to an existing VCS cluster
- Verifying your primary site configuration
- Guidelines for installing InfoScale Enterprise and configuring the cluster on the secondary site
- Setting up your replication environment
- Setting up security for Volume Replicator
- Assigning user privileges (secure clusters only)
- Configuring disaster recovery with the DR wizard
- Cloning the storage on the secondary site using the DR wizard (Volume Replicator replication option)
- Installing and configuring Enterprise Vault on the secondary site
- Configuring Volume Replicator replication and global clustering
- Configuring global clustering only
- Setting service group dependencies for disaster recovery
- Verifying the disaster recovery configuration
- Adding multiple DR sites (optional)
- Recovery procedures for service group dependencies
- Using the Solutions Configuration Center
- About the Solutions Configuration Center
- Starting the Solutions Configuration Center
- Options in the Solutions Configuration Center
- About launching wizards from the Solutions Configuration Center
- Remote and local access to Solutions wizards
- Solutions wizards and logs
- Workflows in the Solutions Configuration Center
- Installing and configuring Enterprise Vault for failover
- Installing Enterprise Vault
- Configuring the Enterprise Vault service group
- Configuring Enterprise Vault Server in a cluster environment
- Setting service group dependencies for high availability
- Verifying the Enterprise Vault cluster configuration
- Setting up Enterprise Vault
- Considerations when modifying an EV service group
Considerations for a fast failover configuration
For VCS service groups that contain many disk groups, you can greatly reduce failover time by implementing fast failover.
Fast failover speeds up the failover of storage resources in several ways:
Fast failover provides a "read-only deported" mode for disk groups on inactive nodes. This mode speeds up the process of importing a disk group.
Fast failover maintains the current disk group configuration in memory on the inactive nodes. Any changes are automatically synchronized so that all nodes maintain an identical disk group configuration.
For more details about fast failover, refer to the Storage Foundation Administrator's Guide.
Take the following storage-related requirements into account if you are planning to implement fast failover:
Fast failover is currently not supported for the following:
RAID-5 volumes
SCSI-2
Active/Passive (A/P) arrays for DMP
In synchronous mode of replication, if fast failover is set, then the RVG cannot be stopped and started when a disk group fails over to another node. If the RLINK is in hard synchronous mode, it may not be connected when the volume arrives, and the I/Os may fail. In such case, the Event Viewer displays NTFS and ReFS errors and file system reports the volume as RAW. Therefore, fast failover is not supported if the RLINK is in hard synchronous mode.
The disk group version must be 60 or later for fast failover to work. To verify the disk group version, from the VEA console, right-click the disk group and click Properties. Disk group version upgrade is required after upgrading SFW HA on the cluster nodes. Refer to the Veritas InfoScale Installation and Upgrade Guide for more information.