LeftHand P5000 Multi-Site SAN - Can it be used with Geographically Dispersed Clusters

[CyberWerx]

I am looking at the design requirements for setting up a Geographically Dispersed Cluster using Windows 2008-R2 across 2 sites 500 miles apart. The WAN latency is circa 15Ms. This rules out SYNCRONOUS replication.

The clusters are "active/active". Here is the scenario:

1) Site-A has a cluster node that has LUN1a and LUN2a.

2) Site-B has a cluster node that has LUN1b and LUN2b.

3) In normal operation we want LUN1a on the SAN at Site-A to asynchronously replicate to LUN1b on the SAN at Site-B and LUN1b on the SAN at Site-B to asynchronously replicate to LUN1a on the SAN at Site-A.

Is this possible ? How would we manage fail-over ? What happens if the WAN link fails ?

P.S. This thread has been moevd from Storage Area Networks (SAN) (Enterprise) to HP StoreVirtual Storage / LeftHand. - Hp Forum Moderator

[CyberWerx]

Correction: It is a P4500 Multi-Site SAN. HP Part Number AT012A.

Clarification: When LUN1a on SAN-A is active LUN1b (it's mirror) on SAN-B is not in use by the node on Site-B. Similarly when LUN2b on SAN-B is active LUN1b (it's mirror) on SAN-A is not in use by the node on Site-A.