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I want to compare WD sata Raid drives

Last response: in Storage
January 4, 2011 2:49:31 PM

What is the difference in the WD5000ABYS Enterprise Sata drive and the WD5002ABYS Enterprise Sata? I have four of the 5000 in my raid, one is degraded, but when i replace it with the 5002, I get an imcompatible error message.
a c 102 G Storage
January 4, 2011 7:50:15 PM

WD5000ABYS is a RE2 drive and WD5002ABYS is a RE3 drive.

The cache is 16 MB, sustained buffer-to-disk transfer rates are listed at 86 (RE2-GP), 98 (RE2), and 126 (RE3) MB/sec, and average latency is listed at 4.2 ms.
a b G Storage
January 4, 2011 8:49:57 PM

The 5002 RE3 is a dual processor drive, and gives slightly better performance on reads/writes. It should still work in the array since the size is identical, but your raid card might be seeing that it's a different drive and being picky.