Drop in a flash disk instead. ;-)
Original Message
From: Brent Kimberley
Sent: Thursday, August 11, 2016 13:23
To: [email protected]
Cc: '[email protected]'
Subject: [Linux-PowerEdge] Mixing speed - 15k and 7, 5k RPMs SAS HDD in the
same raid5 array
>>On a PE R720, with a PERC H710P Mini and a 8 (15k RPM SAS 6Gb - 600GB) drives
>>RAID5 array, can I replace one faulty HDD with a 7,5k RPM SAS 6Gb - 2TB drive
>>?
I would recommend examining the applicable hardware and software release notes
for your HBA.
Assumptions:
1) PERC H710P Mini -> LSI SAS2208
2) 8 disks x 15k rpm -> ST3600057SS
{Cache: 16MB, Average Seek Time: 3.4ms, Average Write Time: 3.9ms,
Average Latency: 2ms}
3) 1 disk x 7,5k rpm -> ES.3 ST32000445SS
{Cache: 128MB, Average Seek Time: 8.5ms ms, Average Write Time: 9.5ms
ms, Average Latency: 4.16ms}
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