Technical information

June 2012 Dell EqualLogic Configuration Guide v13.2 35
Table 15 Firmware Replication Compatibility
Firmware of “Local” Group
Firmware on Replication Partner
V5.1.x, V5.2.x
V5.0.x, V5.1.x, V5.2.x
V5.0.x
V4.2.x, V4.3.x, V5.0.x, V5.1.x, V5.2.x
V4.2.x, V4.3.x
V4.1.x, V4.2.x, V4.3.x, V5.0.x
V4.1.x V4.0.x, V4.1.x, V4.2.x, 4.3.x
V4.0.x
V3.2.x, V3.3.x, V4.0.x, V4.1.x, V4.2.x
V3.2.x, V3.3.x
V3.0.x, V3.1.x, V3.2.x, V3.3.x, V4.0.x
V3.0.x, V3.1.x V3.0.x, V3.1.x, V3.2.x, V3.3.x
3.9 Clustering
To support a shared storage environment, EqualLogic allows concurrent access to any volume.
Concurrent volume access is enabled on a per volume basis within the Group Manager or via CLI. The
EqualLogic array will not manage concurrent access to these volumes. Control of access to a shared
volume must be provided by means of access control software on each host that has access to the
volume.
By default, EqualLogic PS Series groups disable multi-host (shared) access to target.
• If needed, you can enable multi-host access for a volume.
• If you enable multi-host access to a volume, then proper I/O operation concurrency must be
maintained.
Warning: Failure to provide access control to a shared volume can result in data loss.