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WD Black Edition raid

  • NAS / RAID
  • Performance
  • Western Digital
  • Caviar
  • Storage
Last response: in Storage
October 5, 2010 5:41:57 AM

What would RAID performance be like on two

Western Digital WD5001AALS Caviar Black 500GB SATA2 3Gb/s 7200RPM 32MB Cache

More about : black edition raid

a b G Storage
October 5, 2010 6:07:13 AM

RAID 0 will be faster, RAID 1 slower than a single drive. Doubt you'd really notice the difference, maybe a few seconds boot up time, unless you've got some abnormal disk thrashing going on.
a c 415 G Storage
October 5, 2010 7:02:53 AM

RAID 0 can (under optimal conditions) double the transfer rate, but it won't improve the access time. Access time is more important for typical tasks such as booting and starting up programs, so RAID 0 won't give you all that much of an improvement. Expect performance for those kinds of tasks to be something in the neighborhood of 10% faster. 10% is measurable, but not noticeable.

If you want significant performance improvements for those kinds of activities, you need to use drives with an inherently faster access time such as 10KRPM Velociraptors (2-3X faster access times) or SSDs (100X faster access times).
Related resources
a b G Storage
October 15, 2010 8:22:37 PM

Stay away from raid on WD black drives, there are several post on here explaining why. It used to work on their older black drives, but does not anymore.