disabled write cache
When I have a fast and safe nexenta system (HA-cluster, mirrored ZIL, L2ARC, raid10, ...), but I want also a replication with auto-sync for disaster-recovery. Can I use a cheap system without ZIL en L2ARC, but speed things up by disabling the write cache on this system on my disaster recovery site? Is there a risk to have a corrupt replication?
RE: disabled write cache - Added by Linda Kateley about 1 year ago
The risk comes if you lose power. You will risk corruption if you lose power. If you are alright at your dr site to run with the last completed snapshot? then this maybe doable. Do you have an sla for failover? Can you be missing x minutes/hours of data?