Ciro Iriarte wrote:

> 8 vCPU + 2GB RAM VMware guest with a 30GB RRD footprint.
> After adding about 320 new hosts (all of them, network gear) the RRD
> database went to 130GB and the little machine got peaks of 3k IOPS.
> The I/O wait was rather hi and the machine would suddently stop responding

I'd get two 240 GB SSDs, configure them as a ZFS mirror pool
and dedicated it to RRD. Don't forget to turn off atime,
and let the pool use 4kB sectors (ashift=12), otherwise SSDs
won't be happy.

  Mark

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