SCA drives - any interest?

Mike Stein mhs.stein at
Mon Nov 2 23:23:06 CST 2015

I have a couple of 6-drive hot swap bays that some of these drives came out of; 
unfortunately I didn't make a note of what systems they came out of but they 
look like the bay in this Proliant ML370:

although this 5500 looks vaguely familiar and there are two of these bays...:

In any case, they interface through a 68-pin SCSI connector and a 6-pin power 
connector; by any chance would anyone know where I could find the pinout for 
that power connector?

Maybe this isn't the best place to ask; is there a forum where server fans hang 



----- Original Message ----- 
From: "Zane Healy" <healyzh at>
To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at>
Sent: Monday, November 02, 2015 8:21 PM
Subject: Re: SCA drives - any interest?

On Nov 2, 2015, at 10:42 AM, Chuck Guzis <cclist at> wrote:

> On 11/02/2015 08:54 AM, Mike Stein wrote:
>> In case anyone is looking for the 'caddies' it looks like they're
>> mostly HP/Compaq, including several dummies; I scrapped more IBM
>> servers than HP, but to my surprise I only found two IBM units.
> The nice thing about SCA drives is that adapters for narrow- or wide-SCSI 
> are/used to be available.  I've run SCA drives with old Power Macintoshes, for 
> example.
> I don't know if it's still true, but high-performance SCA drives do tend to 
> run pretty hot.
> --Chuck

I have one or two of those adapters somewhere.  Any SCA drives I've used, have 
been quite hot, which is why I run them in external enclosures intended for 
them.  It's rare to find ones that run at less than 7200rpm, most are 10k or 


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