JJZolx Wrote: > Does the software also offer redundancy via RAID, or does it do JBOD > (spanning) or something like RAID0 (striping) in order to combine the > disks into single a large volume? What happens in the event of a > single disk failure - do you lose only some files, or do you lose the > whole volume?
Redundancy can be achieved via several ways. 1. HA mirroring - in this case you have 2 storage servers that mirror each write as it comes down from the app. You can configure a second NIC on the app server with a failover driver and in this event can always access your data in the event of a disk, path, or storage server failure. 2. Host based mirror - create 2 disks and let the app server do the mirroring. 3. Storage RAID - the storage HBA or controller does RAID5, 0, 1 etc. If you are asking specifically in terms of the auto provisioning feature, there are a couple of things you can do here too. 1. Create 2 seperate pools, and do a copy or snapshot from a disk from pool A to a disk from pool B. 2. Create RAID1+0 before adding them to the pool. This should ensure that if a disk is lost, the whole pool will not be. Personally, I created 2 seperate "pools" (albeit one of the pools contains a single disk) and do a snapshot from one disk to the other. In this way, I also have the capability to roll back to the snapshot if I want. Did this answer your question? -- ob_kook _______________________________________________ Discuss mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/discuss
