Summary (Corrected): 18GB Drives in D1000 and E450

Hello Everyone,

One of our colleagues who happens to work for Sun Microsystems responded to my
previous summary with the following:

"The Part Numbers you have quoted in your original email are identical 18GB 10K
RPM Single Ended drives with the single exception of an aluminium back plate
attached to the 4278 PN to act as a heat sink. There is no such thing as an HVD
disk drive, therefore the D1000 and the E450 use the same type of Single Ended
drive internally. The only differential item in either the D1000 or E450 is the
controller card of the D1000 or the possible inclusion of a Diff SCSI controller
card in an E450 to attach a D1000 (or an A1000).

Please correct this inaccurate detail at your soonest opportunity."

Here is my original inquiry:

Hi All,

Are there any compatibility issues/problems if I replace a 18GB 10K drive in a
D1000 with a 18GB 10K drive taken from an E450 server?  I looked up the part
numbers from SunSolve and got the following description:

D1000 Drive    540-4178-01     DRV 18GB 10K 1-in SCSI W/SPUD&PLT        -

E450 Drive     540-4177-01     DRV ASSY 18GB 10K 1-in SCSI W/SPUD        -

I have extra drives in the E450 and would like to use one of those to replace a
failed drive in the D1000.  Sun Tech Support told me unsupported hardware
(meaning the drive taken from the E450) could cause problems in the D1000. He
did not say exactly what problems  this can cause but he suggested we order a
drive with the correct part number.

Here is my previous summary:

The fact is, although the D1000 and E450 drives may look the same, they are
constructed differently.  The D1000 uses differential (HVD) scsi drives. While,
the E450 uses LVD/SE scsi drives internally. The two types are not compatible
with one another.  It may work, but eventually you may run into some problems.
And of course, Sun Service will not provide service for unsupported hardware.

Sincerely,

Khalil
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