Hello! On Thu, Oct 5, 2017 at 12:21 AM, Bryan Sockel <bryan.soc...@altn.com> wrote:
> Is there any performance loss from your if your gluster replica 3 servers > are not all the same configuration? > > > Server 1 - Primary > 16 X 1.2 TB 10k Drives - Raid 10 - Stripe 256k (2.5 Drives) > 1 CPU - Intel(R) Xeon(R) CPU E5-2609 v3 @ 1.90GHz > 64 GB Memory > > Server 2 - Replica > 8 X 6 TB 7.5 RPM Drives - Raid 10 - Trip 512 (3.5) > 1 CPU - Intel(R) Xeon(R) CPU E5-2609 v3 @ 1.90GHz > 16 GB Memory > > As gluster needs to copy each 'write' operation twice and it waits for actual completion of every op, your write iops will be limited by the slowest drive. > Server 3 - Arbiter (Also Virtual machine node) > 2 X 1.2 TB 10k Drives Raid 10 > 2 CPU - Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz > 192 GB Memory > > But it will be relaxed for the arbiter node, as arbiter keeps no data, therefore no writes* happens on it, so it doesn't impacts overall performance * There are actually some metadata updates on the arbiter node, which are, obviously, write operations, but we can neglect them.
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