SCSI HDD performance

daihard · 12-31-2004, 06:20 PM

Does anyone happen to be running your Linux on a SCSI hard drive; Ultra160, 7,200/10,000 RPM in particular?

I'd like to know the readouts of your hard drive performance in terms of STR ("hdparm -t"). I have one Serial-ATA and two ATA drives, and they all average 50-55 MB/sec. I am wondering what numbers will come out from the SCSI counterparts. Could anyone share your results with me?

TIA,
Dai

guzzi · 12-31-2004, 06:30 PM

Hello daihard

I have some 15K Seagate Cheetah Ultra 320 (ST318453LC) drives working from a couple Adaptec Ultra160 controllers.

root@lulu:/home/glen# hdparm -t /dev/sdb
/dev/sdb:
Timing buffered disk reads: 218 MB in 3.01 seconds = 72.43 MB/sec

Is this of any use to you?

randyding · 12-31-2004, 10:45 PM

Adaptec 19160, AIC-7892B U160/m (rev 02)
Maxtor Ultra 320 36GB drive, 10000RPM

Code:

# hdparm -t /dev/sda

/dev/sda:
 Timing buffered disk reads:  202 MB in  3.02 seconds =  66.89 MB/sec

daihard · 12-31-2004, 11:08 PM

Thanks, guzzi and randyding.

I'd like to compare as many numbers as I can with my own results in order to figure out whether upgrading my system to SCSI is worth the extra money. It's good to know that you can use an Ultra320 drive with an Ultra160 controller... I was wondering about that, too.

elfoozo · 01-02-2005, 01:12 AM

Very interesting results so far. I would have guessed SCSI numbers to be much higher.