HP 3PAR Remote Copy Software User Manual
Page 58
2.42
Requirements and Restrictions
Remote Copy User’s Guide
InForm OS Version 2.3.1
Systems used by Remote Copy must adhere to the following restrictions:
■
All storage servers in the configuration must be configured at the same InForm OS level.
■
Each storage server is limited to two Remote Copy interfaces.
This limitation does not apply to 1-to-N Remote Copy. For 1-to-N Remote Copy, the primary
storage server can have four RCIP interfaces; two to one secondary system and two to the
other secondary system.
■
RCFC over IP networks is only allowed for Remote Copy in asynchronous periodic mode.
In addition, the following general restrictions apply to the use of Remote Copy:
■
Self-mirroring configurations are not supported. In other words, a storage server cannot be
used to replicate its own primary volumes.
■
Multihop configurations are not supported. In other words, a primary volume group
cannot be replicated to a backup system and then replicated again from the backup system
to a third storage server.
■
Under normal operating conditions, one system can only be the primary server for one
other system.
This limitation applies mainly to N-to-1, 1-to-N, and bidirectional configurations. See
on page 2.43 and
on page 2.44 for additional details. An
exception to this rule is granted for situations where targets must be reversed during
disaster recovery.
■
All volumes used with Remote Copy must be Thinly Provisioned Virtual Volumes (TPVVs)
with snapshot space or fully provisioned virtual volumes. In addition, the following
restrictions apply:
◆
The maximum number of mirrored volumes system-wide in synchronous mode is 800.
◆
The maximum number of mirrored volumes system-wide in asynchronous periodic mode
is 2400.
◆
The maximum number of volumes per Remote Copy group in synchronous and
asynchronous periodic mode is 100.
◆
The maximum number of volumes per Remote Copy group in asynchronous periodic
mode is 2400.
◆
The maximum size of a mirrored volume is 16 TB.