HP Storage Essentials NAS Manager Software - Manual (Page 424)

Provisioning Manager 392
Size Reported as 0 on EVA Array Volumes of 1 GB or
More (Correct Size is Reported After Running Get All
Details on EVA Array
If you create a volume of 1 GB or more on an EVA, the size reported is 0 until a Get All Details is
run on the EVA array. Smaller volume sizes do not exhibit this problem. This is a limitation in the
EVA array software, and AppIQ is working with HP to resolve this issue.
Cannot Always Delete Selected Volume on MSA, MSA Allows Deletion of
Only Topmost or Last Volume
You can delete only the last or topmost volume on each of the MSA array’s controllers (modeled as
pools). Attempting to delete other volumes will return a generic error code 4. This is a limitation in
the MSA array software and AppIQ is working with HP to resolve the issues.
Issues Specific to Engenio Storage Systems
This section describes the following for Engenio:
• ” Creating and Deleting Storage Pools ” on page 392
• ” Creating and Deleting Storage Volumes ” on page 392
Creating and Deleting Storage Pools
For Engenio, a storage pool is the same as a volume group. Create at least one storage pool before
provisioning a volume. When you delete a storage pool on an Engenio storage system, all the
volumes for the volume group are deleted, including the placeholder volume.
Creating and Deleting Storage Volumes
Keep in mind the following when you create a volume on an Engenio storage system:
• Make sure you select a volume group that can accommodate the requested size for the new
volume.
• You can create volumes from existing free extent areas within a volume group.
• The volume capabilities, their cache read ahead multiplier and segment size are shown in the
following table:
• No volume-to-LUN masking is done by default.
Table 56 Volume Usage
Volume
Capability
Cache Read Ahead
Multiplier
Segment Size
File and
Default
1 64 KB
Database 0 64 KB
Multimedia 8 128 KB
Custom 0 to 65,535 8 KB, 16 KB, 32 KB, 64 KB, 128 KB, 256 KB