Re: pumping storage using DST

["Jeff Silberberg" <jsilberberg@xxxxxxxxxxxxxx>]

Jim,

        You did not indicate the release level, but in V5R2 (??) there is a
pump while active in the OS.  You can set up and move 99% of a disk with out
shutting down the system and then do a relatively quick IPL to get the last
1%.

        This may be a lot less painful then DST pump in terms of down time
in your shop..

    JMS...

----- Original Message -----
From: "Jim Damato" <jdamato@dollargeneral.com>
To: <midrange-l@midrange.com>
Sent: Tuesday, July 23, 2002 7:06 PM
Subject: pumping storage using DST


> As mentioned in the RCLSTG thread, we'll be adding towers of "new"
(slightly
> less obsolete) disk technology to an ASP and retiring the original disks
by
> removing them from the ASP and letting the system pump the data to the new
> disks.
>
> We're talking about around 800 GB on 116 existing disks - RAID5 configured
8
> GB 6713's.  We'll be adding three 5065 cabinets with 135 disk - 17.5 GB
> 4318's.  The system is the aforementioned 740 12-way brontosaurus with the
> older CPU's.
>
> Has anyone undertaken a move of this magnitude?  I have no idea how long
the
> DST will take to move the data.  I wouldn't be surprised if it took seven
> hours or seven days.  If anyone has any similar experiences that I could
> scale up or down to use as a basis it would be very helpful.  No one
locally
> among the CE's and BP's had anything to offer, and the support center
> wouldn't go out on a limb.
>
> At the moment we're planning to take on 16 or 24 of the disk in one shot
and
> try to use it to extrapolate for the rest.  If it doesn't look like we can
> finish in our weekend processing time frame we may have to do it in chunks
> over the next few weekends.
>
> Much thanks...
>
> -Jim
>
> James P. Damato
> Manager - Technical Administration
> Dollar General Corporation
> <mailto:jdamato@dollargeneral.com>
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