HP XP7 Storage - Manual (Page 26)

Capacity and using Fast Snap, Thin Provisioning, and Thin Provisioning Z in a single
storage system
If you are using FS, THP, and THP Z in a single storage system, note the following when creating
FS pairs:
•
You can create an FS pair whose P-VOL is an THP V-VOL only if you are not currently expanding
the THP V-VOL capacity.
•
You can use a maximum THP volume size of 4 TB (4,398,046,511,104 bytes) as an FS P-VOL.
You can create a volume of 4 TB only if the unit you specified when creating the volume is
block (8,589,934,592 block).
The following table explains how the maximum LDEV capacity differs depending on the
capacity unit you specify when creating the volume.
Maximum LDEV capacity Unit specification
4.00 TB
4,096.00 GB
4,194,304.00 MB
8,589,934,592 block
Related topics
•
“Creating Fast Snap pairs” (page 64)
•
“Creating LDEVs” (page 51)
•
HP XP7 Provisioning for Open Systems User Guide
Resource Partition
You can create an FS pair without regards to the P-VOL and S-VOLs resource group assignment.
You must assign the pool you are using to the resource group where the P-VOL is assigned or to
the resource group where you can create FS pairs.
For more information about resource groups, see the HP XP7 Provisioning for Open Systems User
Guide.
Acronyms and abbreviations for XP7 storage system software applications
used in this guide
This user guide uses the following acronyms and abbreviations for software names:
•
FC Z: Compatible FlashCopy
•
FCSE: Compatible FlashCopy SE
•
BC: Business Copy
•
BC Z: Business Copy Z
•
Cnt Ac-S: Continuous Access Synchronous
•
Cnt Ac-S Z: Continuous Access Synchronous Z
•
FS: Fast Snap
•
Cnt Ac-J: Continuous Access Journal
•
Cnt Ac-J Z: Continuous Access Journal Z
26 Overview of Fast Snap