Sun Cluster 3.1 + SVM question
Hello!
It is possible use Sun Cluster 3.1 + Solaris Volume Manager creating fail-over filesystem using systems own disks (not external storage array)?
Example:
- 2 identical hosts (say 2 harddisks per machine).
- first disk is rootdisk, swap etc.
- seconds disk is "storage volume", mounted with /storage (ufs filesystem).
Is there any way "mirror" /storage volume to second host? (using Sun Cluster+SVM)?
Thanks for help!
# 1
Hi,
a failover filesystem does always need dual attached LUNs, otherwise only one system can really access the physical LUNs. I don't see how you can achieve failover with a disk that is only physicaly attached to a single node.
You can also not mirror such two single node attached devices via SVM (neither VxVM).
You propably could achieve mirroring via Sun StorEdge?Availability Suite 3.2 Remote Mirror Software (SNDR) or Veritas Volume Replicator, but Sun Cluster does currently not support that technology instead of host based mirroring through SVM or VxVM.
Btw. in your example not even the rootdisk would be mirrored. This should be avoided in an HA environment.
Greets
Thorsten
