I have a Promise SX6000 RAID card and on it an 1Tb RAID-5 array (6*200G WD2000 ATA disks 7500rmp). I am using Debian Woody with the 2.4.19 Kernel on a AMD AthelonXP +2500 system. I am using the Promise driver downloaded and compiled from there website.
I am getting about 3.3Meg/sec from the array to an EIDE disk (segate barracuda ATA). While from the Array to the Array I get about 4.1Meg/sec; copying 200G is an overnight plus job for sure. To me this is stupid slow, and I must be doing something wrong. Even if the Promise card is the slowest one available (3Ware, Promise, Adaptek) it can't really be *this* slow: this card should not even be on the market at this speed. All the while my system load average is about 1.5-2. Is this Linux? Does it really run this slow under Windows as well? Should I be using i2o or some other driver? Perhaps the array is just too large?
PS: I get no errors, and the card is on it's own interrupt with a full 128MB cache.
Thanks, Jason.
-- Jason C. Leach IT Manager J.S. Thrower & Associates Ltd. Phone: (250) 314-0875 Fax (250) 314-0871 email: jason.leach@jsthrower.com http://www.jsthrower.com
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