HP StorageWorks SAN Virtualization Services Platform 2.1.1 release notes (5697-0066, July 2009)

• Maximum HBAs per server: 8 (Windows/DSM limit)

SVSP front-end capabilities and limitations

• Front-end presented capacity of the SVSP system: 1 PB (Maximum of back-end. See the following

back-end section for additional limitations.)

• Maximum number of virtual disks (including snapshots, snapclones, 4 paths): 4093 + 3 setup

virtual disks

• Maximum number of virtual disks per host: 255 (LUNs 1–255)—depending on operating system

• Maximum size of virtual disk: 2047 GB

• Minimum size of virtual disk: 1 GB

• Maximum number of PiTs per virtual disk: 32 at 10–minute intervals or 64 at 60–minute intervals

• The minimum interval between point in time (PiT) copies is 10 minutes. This also limits the minimum

asynchronous replication (remote mirror) recovery point objective to the same 10–minute interval.

• Maximum number of mirror PiTs (required PiTs + PiTs alert) on either source or destination virtual

disk or virtual disk group: 64

• Total number of PiTs per SVSP system: 4096

• Maximum snapshots per PiT: 32

• Maximum snapshots per virtual disk: 64

• Maximum front-end presentations per DPM: 8192 (4096 LUNs with 2 paths per virtual disk per

DPM)

• Maximum number of initiators per virtual disk: 64 (32 dual-port hosts) if supported by OS and

multipath drivers

• Maximum number of virtual disk members in a virtual disk group: 32

• Maximum number of total active asynchronous remote copies, snapclones, and concurrent migration

jobs per SVSP system: 256

• Maximum number of asynchronous mirror tasks (remote copies) per source virtual disk: 3

• Maximum number of cross-connected systems or domains for management over IP: 4

SVSP back-end capabilities and limitations

• Back-end array capacity of the SVSP system: 1 PB using 512 2–TB back-end LUs

• Maximum number of back-end LUs: 512, up to 8 paths per BELU (2048 paths) per DPM group

(4 per DPM)

NOTE:

There is a limit of 254 back-end LUs (just under 1/2 PB using 2 TB per LU) per array, enforced

by the VSM.

• Largest back-end LUN: 2047 GB

• Smallest back-end LUN: array dependent

• Maximum number of stripe set members: 16

Configuration best practices

The following are a list of directives that must be followed for the HP SAN Virtualization Services

Platform.