Can We Put a Dell SAS3 Controller in Dell R810?

bhunger
bhunger used Ask the Experts™
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We want to add a SAS3 controller / drives to our Dell R810.  Currently, we have an R810 with an H800 controller attached to a MD1200.  Can we upgrade the controller and DAS to SAS3 (12gps)?  Or, even SAS4?

Or, do we have to upgrade the server to accomplish this (we'd rather not due to software licensing issues).
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Network Engineer
Commented:
I am installing Dell PERC H830 into R610 right now. The only issue is that we had to modify the case a little bit to fully accept the SAS cable. We are connecting to MD1420 enclosures.
Top Expert 2014

Commented:
Damn Intel for not making low core count processors so that you could get around restrictive licensing.

I would use a lower capacity card that is compatible with the current server rather than gamble support on a faster internal card. Let the new enclosure negotiate the speed down to the internal card to get better support since it would be down to the new box being too fast but it is brand new so has full warranty and they said it would clock down.

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Commented:
Its a large Oracle database server and we've noticed over the years that the disk i/o is, by far, the biggest performance determinant.  That's why we'd be comfortable leaving the R810 with its 4x4 cpu configuration in place.  Kevinhsieh, how'd you R610 with the H830 end up working out?
Top Expert 2014

Commented:
Replacing the HDDs with SSDs is surely enough for your old Oracle environment?

It's not perfect as SSDs wear out if you misuse them but even with legacy bandwidth products you can still shove some faster storage in the mix.

Sorry to harp on but the highest sequential throughput of a hard disk is about 300 MBPS which is just under 3Gbps, MD1200 takes 12 disks and if you dual attach it to the H800 you get 8 * bi-directional 3gig lanes so you are not swamping the busby very much unless you use SSDs, especially if it is random rather than sequential I/O. Of course you get more cache with the newer cards.

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