2013/2/14 Mark Martinec Mark.Martinec+observium@ijs.si
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.
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Thanks!, disabling atime in a minute, the 240GB disks will wait a little more.. The 4KB sector can be changed after zpool creation?, I asume that goes for SLOG/L2ARC also, right?
Regards,