HP XP7 Storage - Manual (Page 17)

Description Term
For example, when the subscription limit is set to 100%, the total THP-VOL capacity that
can be created is obtained using this formula:
total THP-VOL capacity <= pool capacity x 100%
Using this setting protects the pool when doing the following:
• Shrinking a pool
•
Creating THP-VOLs
• Increasing THP-VOL capacity
A virtual device in the storage system. A VDEV is a group of logical volumes (LDEVs) in
a parity group. One parity group consists of multiple VDEVs. A VDEV usually includes VDEV
some fixed volumes (FVs) and some free spaces. The number of FVs is determined by
the emulation type.
Before you begin
Before you begin provisioning your HP XP7 Storage, certain requirements must be met.
System requirements
•
The HP XP7 Storage hardware, microcode, and Remote Web Console essential for operating
the storage system be installed and configured for use.
•
A HP XP7 Storage.
•
The storage system must have parity groups installed.
•
A Remote Web Console client computer.
•
A minimum of 1 pair of FICON CHAs.
Shared memory requirements
CAUTION:
•
The required shared memory is installed by your HP representative.
•
Before the shared memory is uninstalled, all Thin Provisioning Z and Smart Tiers Z pools must
be deleted.
If Thin Provisioning Z is used and the total capacity of Thin Provisioning Z, Smart Tiers Z and Fast
Snap pools is 1.0 PB or more, additional shared memory must be installed. When using Thin
Provisioning Z, the following table shows the required shared memory capacity and the additional
shared memory to be installed.
Required shared memory capacity Total capacity of all pools
None 1.0 PB or less
8 GB If the total capacity satisfies both of following:
•
More than 1.0 PB
• 3.1 PB or less
Before you begin 17