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I'm solving weird thing, i had disk array 4 sas disks in Raid 10, 2 strip with backup, system seemed overloaded in peak times.
i purchased new machine , array with 15 sas disks, we have 7 x 2 + one hot spair. we installed it as RAID 10.
now i have finished optimisation of scripts and all,
i can't optimize more , i'm on the top what i could have done.
these disks are doing almost same as did old array with 4 disks, a little bit more, but i expected much much more
i expected load on disks 10-20% , not in any case 60% or even more that i get right now.
i have more than 3 times stronger power,
can someone tell me where i can be wrong, what i'm doing wrong or is everything okey with it ?
when i put sar command
Average: DEV tps rd_sec/s wr_sec/s avgrq-sz avgqu-sz await svctm %util
Average: sdc1 129.59 7089.15 44.77 55.05 1.43 11.07 4.69 60.77