Hewlett Packard Enterprise HPE XP7, User Manual, Page: 59 / 311

Item Requirement
Volume type Logical volumes (LDEVs).
To maintain performance levels, use the following configurations:
• Place normal volumes and pool-VOLs in separate parity groups (see
Thin Image licensed capacity requirements ).
• Ensure that pool-VOLs consist of LDEVs from more than one parity
group.
You cannot specify the following volumes as FS pool-VOLs:
• LDEV whose LDEV status in RWC is other than Normal, Correction
Access, or Copying. In RAID Manager, use the
raidcom get ldev
command to check the volume type.
• Volumes that are already being used as FS P-VOL or S-VOLs.
• Volumes that are already contained in FS, THP, Smart, or Real Time
Smart Tier pools.
• Volumes used as migration plans or pair volumes for another product.
• Volumes for which you have used the Data Retention to set Read Only,
Protect, or S-VOL Disable attributes.
• Cache Residency volumes.
• Command device volumes.
• HA volumes with the reservation attribute.
• HA volumes for quorum disks.
• External volumes with the Data Direct Mapping attribute.
• THP V-VOLs with the Data Direct Mapping attribute.
Note: The following restrictions apply to volumes used in the same data
pool:
• Volumes must be in the same resource group.
• External pool-VOLs must have the same cache mode, either enabled or
disabled.
• When using both internal and external volumes, the external volumes
must have cache mode enabled.
Emulation type OPEN-V
RAID level
All RAID levels are supported.
Table Continued
Fast Snap system and planning requirements 59