User Manual

Command View EVA
67Enterprise Virtual Array 3000 User Guide
■ Locating a disk group—causes an LED to light up allowing you to identify
the physical drives that make up the disk group.
■ Ungrouping a disk—removes a disk from a disk group.
Note: The disk is not deleted from the disk group but is actually ungrouped . If the disk
is to be removed from the rack, use the locate function so that it can be physically
identified in the rack before it is ungrouped.
You cannot delete the only disk group (such as the default disk group). The Delete
button is not visible if only one disk group is present.
For more information about disk drives, see “Fibre Channel Disk Drives” on
page 81.
Data Replication
If Continuous Access EVA is installed, Command View EVA provides
host-independent data replication across two or more Enterprise Virtual Arrays.
The storage systems can be located at the same physical site or different physical
sites. When the storage systems are located at different sites, Command View
EVA provides a disaster tolerant storage and data replication solution.
Command View EVA manages data replication functions by organizing Vdisks
into data replication (DR) groups. DR groups allow you to manage the replication
of a set of Vdisks. The Data Replication folder is accessible using the folder
structure in the Navigation pane, as shown in Figure 24.
You can perform the following data replication tasks:
■ Add a Vdisk to a DR group—add the selected destination Vdisk family to the
DR group.
■ Create a DR group—create up to 64 DR groups in a storage system.
■ Fail over a DR group—when a failure occurs in your source storage system,
data fails over to the destination storage system to allow continued access.
■ Modify a DR group—modify the name and failsafe properties of a DR group.
■ Delete a DR group—delete a DR group from a source storage system.
For detailed information on the use of Command View EVA data replication
functions, refer to Command View EVA online help.