Shared memory

Virtual Storage Platform F350, F370 Hardware Reference Guide

Version
88-07-0x
Audience
anonymous
Part Number
MK-97HM85016-05

Using Hitachi software products, the number of pairs, migration plans, and pool capacities and virtual volumes depend on the amount of capacity of shared memory installed on the controller.

The shared memory capacity allocated by shared memory function and the cache memory capacity required for adding shard memory function vary depending on storage system models.

Software Items affected by shared memory capacity

ShadowImage

TrueCopy

Universal Replicator

global-active device

The number of pairs that can be created.

For more information, refer to the specific software user guide.

Volume Migration

Volume Migration V2

The number of migration plans that can be executed concurrently.

For more information, refer to the specific software user guide.

Dynamic Provisioning

Dynamic Tiering

active flash

Thin Image

Dedupe and compression

Pool capacity and virtual volume capacity that can be created.

For more information, refer to the following table related to usable capacity of pools and virtual volumes.

Table. Usable capacity of pools/virtual volumes

Shared memory function

VSP F350

VSP F370

Base

0.29 PiB

1.6 PiB

Extension1

1.6 PiB

4.4 PiB

Extension2

4.4 PiB

8.05 PiB

Extension3

-

-

Note: When decreasing shared memory function, delete all DP, DT, active flash, TI, and dedupe and compression pools.

The following table lists the corresponding amount of shared memory function to shared memory capacity:

Table. Shared memory function and shared memory capacity

Shared Memory

Function

VSP F350

VSP F370

Base

34.0 GiB

72.0 GiB

Extension1

42.5 GiB

94.0 GiB

Extension2

54.5 GiB

110.0 GiB

Extension3

-

-

Table. Minimum cache memory capacity required for shared memory function

Shared Memory

Function

VSP F350

VSP F370

Base

64 GiB

128 GiB

Extension1

128 GiB

128 GiB

Extension2

128 GiB

256 GiB

Extension3

-

-