ProLiant Servers (ML,DL,SL)
cancel
Showing results for 
Search instead for 
Did you mean: 

mixing SAS/SATA drives

SOLVED
Go to solution
micromacromonkey
Occasional Visitor

mixing SAS/SATA drives

Hi all

My client has a lightly used DL360 GL5 (running BackupExec). It has a pair of SAS drives set up as a RAID 1 system partition. Can I add 4 SATA drives in and set up as a RAID 5 array? I think I may need to upgrade the E200i (BBWC uprgade?) to get RAID 5 but will it work?

The reason for this is the client has 4 ESX servers with an almost-full SAN, they want to archive some data off but still have it online, so tape not an option. The data will be very lightly used. I figured I could set up an iSCSI target on the DL360 then mount the vmfs filesystem on there. I'd have have a 750GB RAID 5 array for the price of 4 SATA disks and the iSCSI target software. (another MSA30 with enough disks to do this is around 20 grand!)

thanks, Dan
7 REPLIES
Andrew Young_2
Honored Contributor

Re: mixing SAS/SATA drives

Hi Dan

The short answer is that you cannot mix SATA and SAS drives on the same channel. Bays 1-4 use the same connection (channel) to the controller, but bays 5-6 on some models can be connected to another controller. I'm not sure whether it is possible though to have different disk types on a controller.

I think your least cost option would be to use SAS drives. Some model of the DL360 have all 6 drive bays enabled, others only have bays 1-4.

HTH

Andrew Y
Si hoc legere scis, nimis eruditionis habes
Andrew Young_2
Honored Contributor

Re: mixing SAS/SATA drives

Hi Dan

I need to make a correction. The E200 controller series are universal controllers and you can mix and match SAS/SATA drives on the unit.

Again the restriction is 4 drives per channel.

Regards

Andrew Y
Si hoc legere scis, nimis eruditionis habes
micromacromonkey
Occasional Visitor

Re: mixing SAS/SATA drives

Hi Andrew

Thanks very much for your reply, so just to clarify your second response, I can mix the two types but not on the same channel?

My reason for suggesting SATA was cost and size based, with 4 250GB drives I could get a 750GB RAID 5 drive, I would only be able to do 420GB with SAS I think?

However I'm guessing that the system drives are on ports 1 and 2 of channel 1 so perhaps I would need to move them to the second channel to leave me 4 free ports on the first channel.
Andrew Young_2
Honored Contributor

Re: mixing SAS/SATA drives

Hi Dan

If you have the E series RAID controller on your server it is highly probable that only drive bays 1-4 are enabled. To enable the other two you would need to buy an optional cable or update to a P-series RAID controller which supports 6 drives per bus.

Once channel 2 on the e-series is enabled you could move the boot disks there and enable them to boot from channel 2.

Although I have never tried it, the documentation seems to suggest it is possible to have both SAS and SATA drives on the same channel.
Si hoc legere scis, nimis eruditionis habes
Andrew Young_2
Honored Contributor

Re: mixing SAS/SATA drives

Hi Dan

If you have the E series RAID controller on your server it is highly probable that only drive bays 1-4 are enabled. To enable the other two you would need to buy an optional cable or update to a P-series RAID controller which supports 6 drives per bus.

Once channel 2 on the e-series is enabled you could move the boot disks there and enable them to boot from channel 2.

Although I have never tried it, the documentation seems to suggest it is possible to have both SAS and SATA drives on the same channel.

Regards

Andrew Y
Si hoc legere scis, nimis eruditionis habes
Andrew Young_2
Honored Contributor
Solution

Re: mixing SAS/SATA drives

Hi Dan

I have done some additional reading. The onboard E200 controller on the DL360G5 only supports a single channel. You will need to purchase an addon P400 controller (BBWC recommended) and the additional cable to access bays 5-6.

Regards

Andrew Y
Si hoc legere scis, nimis eruditionis habes
micromacromonkey
Occasional Visitor

Re: mixing SAS/SATA drives

thanks mate, your effort is much appreciated.