While I am quite happy with the random read / seq. write and random write performance, sequential read on a Mirrored Storage Volume is somewhat strange - it looks like only one out of the 2 disks was serving my I/O requests. Is there any thing I need to check, or this is just a "normal" behavior of SS that's not quite normal?
Please see the below simple comparison I did between SS Mirrored and VROC RAID 1. Unfortunately not all slots on the M/B has VMD enabled so SS needs to come into the picture.
SS:
2x Intel P3700 2TB - Mirrored
SEQ1M QD=16 T=1: Read: 2757.57 MB/s Write: 2014.33 MB/s
SEQ1M QD=1 T=1: Read: 1157.53 MB/s Write: 1770.58 MB/s
Random 4k QD=32 T=16: Read: 2997.89 MB/s Write: 1752.23 MB/s
VROC:
2x Intel P3700 2TB - RAID 1 via VMD
SEQ1M QD=16 T=1: Read: 5579.43 MB/s Write: 2029.85 MB/s
SEQ1M QD=1 T=1: Read: 1732.4 MB/s Write: 1920.70 MB/s
Random 4k QD=32 T=16: Read: 3282.03 MB/s Write: 1727.10 MB/s
Cheers
Chris