![]() ![]() Add a quorum witness server to the switchover magic and you have a ALUA allows the OS to recognize and redirect IO. At a high level, when a switchover command is issued, the path states change from active to standby and vice-versus. The source array provides open paths while the replication target shows its paths in standby. HP 3PAR Peer Persistence relies on operating systems which can use the ALUA command set of of the SCSI bus to recognize open and closed paths to a single volume. Peer Persistence is the HP branding for transparent LUN failover between storage arrays with no downtime – a concept VMware administrators will recognize is Metro Storage Clustering in the VMware vernacular. With the 2.1 release of the HP 3PAR StoreServ Management Console, HP has enabled the creation and control of Peer Persistence configurations within the management tool.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |