Re: OS400 DATA MIGRATION

["Oludare Ogunmadewa" <oludare@xxxxxxxxxxxxx>]

Sorry guys,

I've been tied up in meeting all day!

Clarification:  I have 12 X 4 Gig and 1 of those is mirrored at base for OS
and 10 is RAIDED.

Dare
----- Original Message -----
From: "Richard Jackson" <richardjackson@richardjackson.net>
To: <MIDRANGE-L@midrange.com>
Sent: Monday, October 09, 2000 9:43 PM
Subject: RE: OS400 DATA MIGRATION


> 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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