About creating v-vols, V-vol limits, Prerequisites for creating v-vols – HP XP P9000 Command View Advanced Edition Software User Manual
Page 108: 108 prerequisites for creating v-vols
About creating V-VOLs
Replication Manager supports creation of V-VOLs on storage system configurations. This function is
only supported for XP24000/XP20000 or HP StorageWorks P9500 storage systems. After creating
V-VOLs, it is necessary to assign LUNs to them in order to create copy pairs. Assignment of LUNs
should be done using Device Manager. Replication Manager provides a wizard for creating V-VOLs
and associating them with volume pools.
Related topics
• Permitted V-VOL operations based on CVS installation
• About the Create V-VOL Wizard
• Launching Create V-VOL Wizard
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 StorageWorks 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 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 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.
Setting up storage systems
108