Never had an issue returning anything to Dell, for what it's worth.

 

-Sam

 

 

 

From: David Lum [mailto:david....@nwea.org] 
Sent: Thursday, October 13, 2011 12:27 AM
To: NT System Admin Issues
Subject: What would YOU do?

 

Background:

A %nightjob% client (17 employees) of mine has a Dell PowerEdge 840 with 4
SATA drives, two volumes of RAID1 (2x250GB for C: and D: , 2x500GB for E:)

OS is SBS 2003 and they use SQL in addition to Exchange (when I spec'd this
in 2007, SQL wasn't involved). I have split up Exchange / SQL Log/DB files
as best I can.

 

This has been working OK but they app that uses SQL is kind of a pig and it
and Exchange create a lot of disk contention. I got the bright idea to have
them buy $600 of 15K RPM SAS drives and an external enclosure and is bundled
with a SAS RAID5 card (PCIe 4x - this is important for later.).

 

I figured I'd create a RAID5 volume and point SQL over to this new drive
array and performance should be much improved, my theory being is the system
will be as fast or faster pre-SQL (my thinking was I might be able to move
some other things off the SATA drives and onto the faster controller/disks).

 

The mistake:

Parts are onsite, and tonight I go to install the RAID card and..heeeeey,
this system has ONE PCIe 8x slot and ONCE PCIe 1x slot, plus some standard
PCI slots. Populating the PCIe 8x slot is a SAS 5/iR controller hooked to
the four SATA drives. In other words, the shiny new toy I had them purchase
won't work because I had assumed the existing RAID controller was built-in.
It hadn't occurred to me as a remote possibility that there would be
insufficient slots, I hadn't added a thing to this server since they'd
bought it.

 

What would you guys do? Send the hardware back and plead mea culpa? Is there
any way to put the existing SATA array on a different card (say, a PCIe 1x
SATA RAID card) without having to rebuild the volumes? I've looked for SAS
RAID5 PCIe 1x (yes, it would be slower than 4x but still better than the
stiff internal) but no luck.

 

Maybe I'm over thinking this after a 17hr day (between %dayjob% and
%nightjob%), but I welcome your guys' input.

 

David Lum 
Systems Engineer // NWEATM
Office 503.548.5229 // Mobile 503.267.9764

 

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