All,
I am investigating the use of Ceph for a video surveillance project with
the following minimum block storage requirements:
385 Mbps of constant write bandwidth
100TB storage requirement
5250 IOPS (size of ~8 KB)
I believe 2 replicas would be acceptable. We intend to use large
capacity (2 or 3TB) SATA 7200rpm 3.5" drives, if the IOPS work out properly.
Is there a method / formula to estimate IOPS for RDB? Specifically I
would like to understand:
- How does replica count affect read/write IOPS?
- I'm trying to understand best practice for when to optimize server
count, drives per server, and drive capacity as it relates to IOPS. Is
there a point of diminishing I/O performance using server chassis with
lots of drive slots, like the 36-drive Supermicro SC847a?
Thanks,
Mike
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