Email this to a friend
 
posted on June 28th 2007, at 15:34
by lunarg
Did a test on two DL380 G5 controllers to check out the difference between having a battery or not on a P400 SAS RAID controller. The results are remarkable, to say the least.

Both machines are fairly identical when looking at disk configuration: both have a P400 SAS controller with an equal amount of storage, but srv1 has 512MB with battery, srv2 has 256MB without battery.

I ran a dd test of a file, and this is the output:

srv1:~# dd if=/dev/zero of=./dump.dump bs=1k count=81920008192000+0 records in8192000+0 records out8388608000 bytes (8.4 GB) copied, 48.282 seconds, 174 MB/s

srv2:~# dd if=/dev/zero of=./dump.dump bs=1k count=51200005120000+0 records in5120000+0 recor  ...

Send a link to this post to yourself or a friend.

Send to e-mail:
Your name:
Your e-mail:
Captcha:
Type the letters and numbers as shown.
/get/captcha/1711702193
Not readable? Get another.
 
Information entered is solely used for sending a one-time e-mail, and is not retained and/or passed on to a third party.
 
 
 
 
« March 2024»
SunMonTueWedThuFriSat
     12
3456789
10111213141516
17181920212223
24252627282930
31      
 
Links
 
Quote
« If the batteries of a TV remote run out, why do we press the buttons so much harder? »