RE: OS400 DATA MIGRATION

["Richard Jackson" <richardjackson@xxxxxxxxxxxxxxxxxx>]

Kewl!  I missed the part about how taking two drives out of the RAID set
makes it too small to hold his data.  Turning off RAID will give him 4 gb.
But taking out two drives takes away 8 gb.  Using your number (38.5 gb
instead of mine) it still doesn't work, he has to turn off RAID and
mirroring to make room for the data.  A power failure while in this
condition would be a most unwelcome event.  I see an unload-reload in your
future.

Richard Jackson
mailto:richardjackson@richardjackson.net
http://www.richardjacksonltd.com
Voice: 1 (303) 808-8058
Fax:   1 (303) 663-4325

-|-----Original Message-----
-|From: owner-midrange-l@midrange.com
-|[mailto:owner-midrange-l@midrange.com]On Behalf Of Larry Bolhuis
-|Sent: Monday, October 09, 2000 6:56 PM
-|To: MIDRANGE-L@midrange.com
-|Subject: Re: OS400 DATA MIGRATION
-|
-|
-|Dare,
-|
-|  To do this you need to go into DST, Work with DIsk Units, and remove
-|the units in question from the ASP. You didn't specify but it sounds
-|like you have a 5052 'top hat' with 10-4G drives and 6 open slots.
-|Additionally it sounds like a mirrored pair of 4's in the base unit. So
-|if you are at 92% full now of a (calculated) 41.9G then you have 38.58G
-|of data. When you remove the 2 drives you will have only 33.52G of
-|storage.  This means that in order to have enough space you will need to
-|remove Mirroring AND Stop Raid protection to have enough space to drop
-|those drives without overflowing. Even then you will need to set your
-|ASP storage limit to near 100% or DST won't let you do it. Being that
-|full it'll take some time for sure! And of course if you lose a drive
-|during that time, it's bye bye data!
-|
-|  So Dare, howz your tape drive working???  I think that in your
-|situation I'd back up your entire system, clean the drive and repeat.
-|Then I'd clear the data from ASP 1, Kill raid and mirroring, remove the
-|drives, do the hardware stuff, re-enable Raid, re-enable Mirroring, add
-|all the drives to the ASP and reload the system. You'll get a balanced
-|load that way too.
-|
-|  My .02.
-|
-|  - Larry
-|
-|ps I haven't done one of these since, um, Saturday?
-|
-|> oludare wrote:
-|>
-|> Hi guys,
-|>
-|> I'm on V3R7M0 and running about 92% DASD usage.
-|> What do I need to know to perform DATA MIGRATION. I need to perform
-|> DATA MIGRATION before IBM CE come in for hardware upgrade.  I'm
-|> planning DASD upgrade and need to remove 2 X 4gig old drive from a
-|> RAID set then add
-|> 7 X 8.58gig more to the raid set (Raid has 16 arms).  I need to get
-|> all data on 2 old drive spread out on the remaining
-|> 8 X 4gig before hardware upgrade by CE.  The 2 X 4gig DASD will be
-|> added to bottom mirrored 2 X 4gig.  At the end I should have 8gig
-|> Mirrored and a little above 92Gig on the Raided top 15 drives.
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