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Old November 28th 04, 12:15 AM
news.tele.dk
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Default What am I doing wrong ??? Or is Adaptec 21610SA just a crappy RAID card ?

Hi,

We've bought the following server:

2 x Xeon 3.2Ghz 1mb lvl2 cache
Intel Server Board SE7320SP2LX
4 Gb of DDR400 REG/ECC
12 x +9 SATA, 120GB, 8MB, Fluid (in hotswap casings)

And put in an Adaptec 21610SA + battery option.

The server should do massive SQL-database transactions.

Just to test the setup we created on big stripe with all the disk's ....

But no matter what we cannot get read/write performance to exeed 100mb/sec
Considering that we can do around 55mb/sec on just one of the disk's
(configured as a single volume),
we consider this SUB-optimal...

Are we doing something wrong or is it just a very crappy card ???
We are sure it is mounted in a PCI-X (66Mhz / 64 bit) slot, so that's not
it.

I've also tested the system with bonnie :

Version 1.03 ------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
dhcp157.rgm-int. 8G 38581 98 83689 46 34724 17 30641 65 73920 23 571.3 1
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 2885 95 +++++ +++ +++++ +++ 2905 99 +++++ +++ 8293 98 dhcp157.rgm
int.dk,8G,38581,98,83689,46,34724,17,30641,65,7392 0,23,571.3,1,16,2885,95,+++++,+++,+++++,+++,2905,9 9,+++++,+++,8293,98


AAAAArrhhhggggggggg money out the window....