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Size reported as 0 on eva array volumes of 1 gb or, Details on eva array, Last volume – HP Storage Essentials NAS Manager Software User Manual

Page 424: Issues specific to engenio storage systems, Creating and deleting storage pools, Creating and deleting storage volumes, 56 volume usage, Running get all details on eva array, Volume

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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