Software RAID5 performance

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i think similar experiences of poster in following thread.

http://social.technet.microsoft.com/forums/en-us/winserverfiles/thread/df7228a9-98d3-431a-b530-f513b6141608/

we have been running zfs in solaris on a number of sunfire x4500/x4540 servers have need to run windows natively on couple of them. while expected sequential read performance on raid-5 volume across 8 spindles sequential write performance ( ~ 18mb/s) terrible despite cpus in server being idle. single disk write performance on system ~ 80mb/s can't understand why raid-5 poor. there tuneable in software raid subsystem in windows can prevent the storage being throttled much? i'd happily let use entire core calculate parity if improved disk throughput. @ point of considering running solaris , presenting storage iscsi target windows vm running on same machine i'd prefer avoid if i can windows software raid performing adequately.

hi kenneth,

i'm not sure there's do. raid5 write performance bad.
if want performance today, of course depending of systems being run, hardware raid10 preferred.
jens ole kragh mcitp, mcts, mct, microsoft technet influent denmark http://jensolekragh.spaces.live.com/


Windows Server  >  File Services and Storage



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