[Gluster-users] JBOD / ZFS / Flash backed

Alex Chekholko alex at calicolabs.com
Wed Apr 4 19:49:47 UTC 2018

Based on your message, it sounds like your total usable capacity
requirement is around <1TB.  With a modern SSD, you'll get something like
40k theoretical IOPs for 4k I/O size.

You don't mention budget.  What is your budget?  You mention "4MB
operations", where is that requirement coming from?

On Wed, Apr 4, 2018 at 12:41 PM, Vincent Royer <vincent at epicenergy.ca>

> Hi,
> Trying to make the most of a limited budget.  I need fast I/O for
> operations under 4MB, and high availability of VMs in an Ovirt cluster.
> I Have 3 nodes running Ovirt and want to rebuild them with hardware for
> converging storage.
> Should I use 2 960GB SSDs in RAID1 in each node, replica 3?
> Or can I get away with 1 larger SSD per node, JBOD, replica 3?
> Is a flash-backed Raid required for JBOD, and should it be 1gb, 2, or 4gb
> flash?
> Storage network will be 10gbe.
> Enterprise SSDs and Flash-backed raid is very expensive, so I want to
> ensure the investment will provide best value in terms of capacity,
> performance, and availability.
> Thanks,
> Vincent
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