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V-vol limits, Prerequisites for creating v-vols, 107 prerequisites for creating v-vols – HP XP Array Manager Software User Manual

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V-VOL limits

The maximum number of V-VOL groups that can be created for each storage system is 65,280. For
XP24000/XP20000 storage systems, the maximum number of V-VOLs in a V-VOL group is 1024.

For HP StorageWorks P9500 storage systems, the default maximum number of V-VOLs that can be
created at one time with the Create V-VOL Wizard is 900. (Exceeding this limit will fail with the error
RPM-01014.) To increase this value, you must modify the

server.http.entity.maxLength

property in the

server.properties

file of the Device Manager server.

By increasing the value of

server.http.entity.maxLength

to 141,500 or greater, the limit on

the number of V-VOLs that can be created at one time for HP StorageWorks P9500 storage systems
is increased to 1,024.

For details about editing the

server.properties

file, see the HP P9000 Command View Advanced

Edition Suite Software Administrator Guide.

Prerequisites for creating V-VOLs

The following prerequisite conditions must be satisfied before creating V-VOLs:

The storage device is an XP24000/XP20000 or HP StorageWorks P9500 storage system.

A Snapshot/Fast Snap license has been registered on the storage device.

The platform used for setting and displaying V-VOLs is open system.

Conditions for primary volumes that can be added (V-VOL Creation)

The following are the requirements for volumes that are displayed as P-VOL candidate volumes in the
2. Select Primary LDEVs page of the Create V-VOL Wizard:

The volume must not be a Snapshot/Fast Snap S-VOL.

Volume types including command devices, pool volumes, journal volumes, system volumes, and
V-VOLs must not be set.

The volume attributes must not include POOL.

The volume attributes must not include V-VOL.

The volume attributes must not include LUSE.

The emulation type must be OPEN-V.

A path must be defined.

The capacity must be between 46 MB and 4 TB.

Permitted V-VOL operations based on CVS installation

The operations that can be performed on V-VOLs depend on whether CVS (Open Volume Management)
has been installed. V-VOLs can be added or deleted from an existing V-VOL group only when CVS
has been installed. The following table lists the conditions and restrictions when creating V-VOL groups:

NOTE:

The maximum number of V-VOLs on an HP StorageWorks P9500 storage system are not restricted
based on CVS installation.

User Guide

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