DRBD9 on mdraid with SSD storage


New Member
May 31, 2013

We're preparing a migration scenario where we'd like upgrade our Proxmox 3.4 cluster to 4.x and convert our exisitng storage to SSD. Would you consider it smart enough to put DRBD9 based volume over mdadm RAID-10 over a set of SSD storage? AFAIK, SSDs themselves should be able to provide decent metadata performance for DRBD when compared to hardware based RAID with BBU. Have you configured a similiar setup in the past?

What we'd like to avoid the most is burning money for the controllers if SSDs alone will perform fast enough, and simplify our disaster recovery - should it ever happen. We'd also like to keep TRIM avaible and most HW raids don't support it - even though it's not our highest requirement and I know that most new SSDs can do just fine without it.

Any opinions? Recommendations? Maybe we should ditch DRBD9 and go with GlusterFS?
I should also mention that we'd like to create a simple two-node replication cluster with a quorum server.



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