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Date:	Fri, 3 Aug 2001 07:21:13 PDT
From:	Peter Skye <pskye@peterskye.com >
Reply-To:	scoug-help@scoug.com
To:	scoug-help@scoug.com
Subject:	SCOUG-Help: Be Prepared, Be Prepared

Content Type: text/plain

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Mark Abramowitz wrote:
>
> >I just started the command files which will run CHKDSK
> >on all the machines' HPFS partitions. (I use AUTOCHECK
> >on the boot partitions only.) It'll take at least 2
> >hours for them to complete.
>
> When you get your copy of eComStation, try using JFS
> instead of HPFS. I haven't done it yet on my machines
> (my version of Back Again 2000 doesn't support JFS),
> but the recovery is supposed to be VERY fast.

Yes, thanks Mark, that's one benefit of JFS that Kim has been promoting
for a couple of years now.

Do you know if JFS requires LVM? It doesn't seem that it should.

I've heard that LVM is rock-solid but as far as I know it doesn't have
any auditing features to let you know the range of drive parameters
which any partition is ensconced upon.

For example, suppose I put my swapper.dat file on H: because that is the
"most-used partition on the least-used drive" and also because it's on a
fast SCSI drive. Then suppose a year later I add a cheap 40 GB Maxtor
IDE drive (5400 rpm). And since my H: drive is getting pretty full I
decide to "span" it over to the slow IDE drive, forgetting that I have
swapper.dat on it. So all of a sudden when I swap, everything is
noticeably slower.

An LVM auditing utility would *tell* me when I've done something like
this (who memorizes all their drive parameters on all their machines?)
and would also look at specific "gotcha" situations such as spanned
swapper.dat files.

Does eCS JFS come with the JFS FixPak installed, or do you have to do
that yourself?

And that's a good point about backup, Mark. What are the backup
solutions for JFS partitions?

- Peter

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