Maybe your application induced excessive thrashing :)

-----Original Message-----
From: Felicity Smith [mailto:[EMAIL PROTECTED]]
Sent: Friday, May 31, 2002 2:05 PM
To: Exchange Discussions
Subject: RE: kinda OT - RAID on the exchange server


Who is the I company?  I despise that company whose name begins with D and
rhymes with Hell.

I was adminstering this Dell server and we started getting error messages
in the event log which looked strange and were coming from the disk drive.
 So I called the D company and every support engineer told me it was
something different.  Eventually after I complained enough they started
sending me replacement drives through a vendor.  I plugged these in same
message, they said oops, we sent you another bad drive, so their vendor
sent me another. Oops, it was the same one I originally sent out.

So the D company eventually sent me a drive from their real warehouse, and
- we still got the error.  Then they started saying that our application
had caused the hard drive error message, and we were to rebuild the drive
array from a backup.  I asked them how is it that an application is
causing hard drive error's.

They didn't have an answer.  We eventually migrated to a different server
and we were able to sweet talk them into getting a replacement.

I hated working on the innards of these servers as well.  I mean have you
seen how they are laid out.  The memory array card's have to be the most
bizzare thing I have ever seen.

I broke a nail taking one of these out.

Give me the C word any day.

--Felicity


> Maybe it's time to go with D or I!
> 
> 
> -----Original Message-----
> From: Andrey Fyodorov [mailto:[EMAIL PROTECTED]]=20
> Posted At: Friday, May 31, 2002 10:19 AM
> Posted To: MS Exchange Discussions
> Conversation: kinda OT - RAID on the exchange server
> Subject: RE: kinda OT - RAID on the exchange server
> 
> 
> Back in 1998 we used Ed Crowley's employer's line of servers and they =
> were
> not that good. We switched to their major competitor. But now it's not a
> competitor anymore since they became the same company. But I still like
> servers that start with C better than those that start with H. But I =
> think
> Ed is also from the C side, right?
> 
> -----Original Message-----
> From: Soysal, Serdar [mailto:[EMAIL PROTECTED]]
> Sent: Friday, May 31, 2002 10:56 AM
> To: Exchange Discussions
> Subject: RE: kinda OT - RAID on the exchange server
> 
> 
> Drop your hardware vendor.  Been running my databases on RAID5's on Ed
> Crowley's employer's fine line of servers and NEVER EVER had an issue. =20
> 
> Serdar Soysal
> 
> 
> -----Original Message-----
> From: Mark Peoples [mailto:[EMAIL PROTECTED]]=20
> Sent: Friday, May 31, 2002 2:57 AM
> To: Exchange Discussions
> Subject: kinda OT - RAID on the exchange server
> 
> 
> I apologise for the OT question...
> 
> Has anyone experienced issues with bad striping on a RAID5e disk array?
> (hardware RAID)
> 
> I have had this twice in the last 6 months. When a disk dies in the =
> array it
> is replaced ASAP. RAID5e should be able to handle this without error =
> right?
> 
> When the RAID5e striping has errors, it registers sectors on the logical
> disk as bad and causes disk I/O errors - which screws (eventually =
> corrupts)
> the exchange information store(s) on the logical drive and prevents =
> backups
> from completing.
> 
> hhhmmm ... perhaps someone can enlighten me as to why RAID5e couldn't =
> handle
> the occassional defunct drive without screwing the rest of the array in =
> the
> process of rebuilding itself...
> 
> The hardware vendor has recommended re-creating the RAID array from =
> scratch
> and restoring from backup....
> 
> Any thoughts?
> 
> sorry again for the OT question - but I'll even throw in a Friday =
> afternoon
> Haiku for good measure:
> 
> Friday afternoon
> gotta get going home=20
> server is cactus
> 
> Thanks,
> MP
> 
> 
> 
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