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@xxxxxxxxxxxxx> wrote:
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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