ProLiant Servers - Netservers

Proliant 8000 & 72GB Ultra320 drives

 
Ed Dolle
Occasional Advisor

Proliant 8000 & 72GB Ultra320 drives

Are they compatible? I am using a SA4250ES controller.

IS it possible that the 4250ES is slowing down the Ultra320 drives, thereby slowing down performance?

BACKGROUND:

I replaced a Raid0 array made up of 3 - 18.2GB Ultra3 drives with 3 72GB Ultra320 drives on a Proliant 8000 that is using a 4250ES as its controller.
3 REPLIES 3
amhakassa
Honored Contributor

Re: Proliant 8000 & 72GB Ultra320 drives

Hi Ed,

This controller is a Wide Ultra2 SCSI (running in Wide-Ultra SCSI-3 mode) which is not really a true Ultra 3. The logic here is whenever you mix a controller and hard drive with different transfer rate, the transfer rate will be negotiated to work together with the slowest speed. Therefore, these ultra 320 hard drives will negotiate to work with the 4250ES controller to run by the slowest speed which will be the controllers speed mentioned above.

Regards
Amha Kassa
Ed Dolle
Occasional Advisor

Re: Proliant 8000 & 72GB Ultra320 drives

But will it cause a performance issue for anything that tries to run any against that drive(whether it be copy from , copy to, etc...)?
amhakassa
Honored Contributor

Re: Proliant 8000 & 72GB Ultra320 drives

Hi Ed,
I don't believe so but still I would like to stress that you don't have to expet the Ultr320 transfer rate. It still run by the controller(which is the lowest transfer rate in this case).
Regards
Amha Kassa