RE: 6618 drives for model 270

Joe,

Do you have the hot-swap option on your drive cage?

If so, you can of course replace a failed drive with _no_ downtime.

IIRC, the 270 supports hot swap, but you had to pay extra for the "concurrent maintenance" drive cage.

HTH,
Charles

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Joe Pluta
Sent: Wednesday, August 15, 2007 9:43 AM
To: 'Midrange Systems Technical Discussion'
Subject: RE: 6618 drives for model 270

From: Larry Bolhuis

From a power and cooling perspective this should work fine. I
probably would put 'blanks' in the open slots so the air

going through

passes across the drives rather than down the empty holes

though. I

have never seen a Seagate 15K drive come for a System i.

Every one has

been the IBM variety.

Okay, I think I'm going to roll the dice and go with five
drives. I'll see if I can rig up a blank for the hole; I
only have five drives in there now, so I might already have a
blank. My only question now is whether to configure four in
the RAID set and have a fifth live spare for "pseudo hot
swap" or to go with five live drives.

By the way, my rationale (naive though it may be) is that
it's easier and quicker to simply swap an already installed
live drive into the RAID set to replace a failed drive than
it is to physically replace the failed drive.
With the drive already installed, I "just" add it to the RAID
set and I can replace the failed drive later when I can
schedule down time. Not being much of an expert at this, I
don't know whether the downtimes for the two actions are
enough different to warrant the trouble.

The biggest feat is that the BCC drives must not identify

themselves

as any 15K drive or the 270 will reject them. If they report as FC
#4318s then they will work and the power draw should be OK.

Yeah, if the 270 doesn't accept them, then this whole
discussion is moot and I go with five 10K drives and a hot swap.

Joe


--
This is the Midrange Systems Technical Discussion
(MIDRANGE-L) mailing list To post a message email:
MIDRANGE-L@xxxxxxxxxxxx To subscribe, unsubscribe, or change
list options,
visit: http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting,
please take a moment to review the archives at
http://archive.midrange.com/midrange-l.

This e-mail transmission contains information that is intended to be confidential and privileged. If you receive this e-mail and you are not a named addressee you are hereby notified that you are not authorized to read, print, retain, copy or disseminate this communication without the consent of the sender and that doing so is prohibited and may be unlawful. Please reply to the message immediately by informing the sender that the message was misdirected. After replying, please delete and otherwise erase it and any attachments from your computer system. Your assistance in correcting this error is appreciated.