HP XP RAID Manager Software - Manual (Page 12)

Requirement Item
Supported: RAID1, RAID1+0, RAID5, and RAID6 RAID level
Restriction: You cannot add a different RAID level to the data pool.
Supported: P-VOL and V-VOL LUSE
Not supported: pool-VOL
The data pool must contain pool-VOLs belonging to the same cache logical
partition. CLPR
P-VOL: 16,384 Number of P-VOLs and V-VOLs
V-VOL: 16,384
For more information about calculating the number of SS pairs, see “Calculating
the number of Snapshot pairs” (page 14) .
128 Maximum number of data pools
(THP, Smart Tiers (Smart), and Thin Provisioning Z (THP Z) pools) Creating pools
for THP, Smart, and THP Z reduces the number of usable pools for SS.
8 GB to 4 TB Pool-VOL capacity
1,024 Maximum number of pool-VOLs in a
data pool
Restriction: You cannot register volumes that are already registered in a pool
as pool-VOLs to another pool.
Allowed, even if snapshots are using the pool. Expansion of data pool-VOL capacity
Allowed. You must first use the pool to delete the pairs. Deletion of data pool
For more information about deleting pairs, see “Deleting pairs” (page 43) .
Allowed. Use of external volumes in pool
For more information about external volumes, see “External volumes” (page 22) .
SAS, SATA, and SSD Data drive type
(Internal and external volumes) You can use pool-VOLs with different drive types
in the same pool.
For optimum performance, use volumes with the same drive types.
(For HP-UX host servers only) Operating system restrictions
Restriction: Create the SS pair before running the command for recognizing
the device or V-VOL on the host server.
Important! Do not use a volume already recognized by the host server as a
V-VOL. If you do, an error can occur and the HP-UX host server can terminate.
For more information about recovering terminated HP-UX host servers, see
“Recovering a terminated HP-UX host server” (page 55) .
The consistency group number. You define this number during the paircreate
command. Consistency groups (CG)
Note: If you do not specify a number, an unused number is assigned.
Values: 128-255 (80 to FF).
Maximum number of SS pairs per CG: 8,192
Maximum number of CGs per storage system: 256 including BC/SS and
Business Copy Z (BC Z) CGs.
Restrictions:
• Do not combine pairs with the same P-VOL in the same CG.
•
Do not combine BC/SS, BC Z, and SS pairs in the same CG.
For more information about consistency groups, see the HP XP P9000 RAID
Manager User Guide.
12 Business Copy/Snapshot planning and design