We have several arrays, some SATA and some SAS. The SAS one looks fine when using this tool but the SATA one (above) always says the array is maxed out. This would be a concern except that the IOPS for both read and write climb several times higher that the level where it first shows 100% usage. Likewise the estimated max iops is way below the level of actual iops on many occasions.
I understand that this is generated by an algorithm to be used as a guide and so not perfect but in the case of this array, it's not even close. It never is.
Either a) I'm reading it wrong or b) some profile for the sata array algo is not correct.
Can anyone shed some light on this?
Thanks