Promise SX6000 is a POS.

["Jason C. Leach" <Jason.Leach@jsthrower.com>]

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Linux-Raid:

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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