--
H. Blakely Williford Men never do evil so completely and
Systems Administrator cheerfully as when they do it from
The Fuller Brush Company religious conviction. (Pascal)
>From digitalink.com!joe.wilson Thu Mar 20 11:30:07 1997
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From: Joe Wilson <joe.wilson_at_digitalink.com>
Organization: washingtonpost.com
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To: Rakesh Jain <jain_at_pascal.physics.smu.edu>
Subject: Re: disk mirroring on alpha
References: <m0w7lFM-000RAzC_at_pascal.physics.smu.edu>
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Status: RO
Rakesh Jain wrote:
> I would like to mirror the system disk so that I can have a redundant
> disk system in case of crash. any ideas how I can do that.......
> I have a 3000-700 with DUNIX 3.2c. The disk I want to mirror is 4.2GB.
> Or uis there any other way I can copy the data from the disk every night to
> other disk and be able to boot from new disk in case first one crashed?.
The way we have done this is to use LSM to mirror the root and swap
disk. While it is a bit complicated and there are a few undocumented
gotchas, it can be done. The procedure is documented in the 3.2G LSM
manual.
J
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>From metrokc.gov!Ronald.Muller Thu Mar 20 11:31:42 1997
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Date: Thu, 20 Mar 1997 09:38:23 -0800
From: "Muller, Ronald" <Ronald.Muller_at_metrokc.gov>
Subject: RE: disk mirroring on alpha
To: "'jain_at_pascal.physics.smu.edu'" <jain_at_pascal.physics.smu.edu>
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Status: RO
Use LSM. Here is a link to it's manual:
http://www.unix.digital.com/faqs/publications/base_doc/DOCUMENTATION/HTM
L/AA-Q3NCE-TE_html/TITLE.html
>----------
>From: jain_at_pascal.physics.smu.edu[SMTP:jain_at_pascal.physics.smu.edu]
>Sent: Thursday, March 20, 1997 9:03 AM
>To: alpha-osf-managers_at_ornl.gov
>Subject: disk mirroring on alpha
>
>hi,
>
> I would like to mirror the system disk so that I can have a redundant
>disk system in case of crash. any ideas how I can do that.......
>I have a 3000-700 with DUNIX 3.2c. The disk I want to mirror is 4.2GB.
>Or uis there any other way I can copy the data from the disk every night to
>other disk and be able to boot from new disk in case first one crashed?.
>
>Thanks
>Rakesh
>
>
>From nabeth.cxo.dec.com!alan Thu Mar 20 11:59:16 1997
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To: jain_at_pascal.physics.smu.edu (Rakesh Jain)
Subject: Re: disk mirroring on alpha
In-Reply-To: Your message of "Thu, 20 Mar 97 11:03:24 CST."
<m0w7lFM-000RAzC_at_pascal.physics.smu.edu>
Date: Thu, 20 Mar 97 10:56:16 -0700
X-Mts: smtp
Status: RO
Get the LSM license and use it. If you only want a
secondary disk for emergency boots, get a full backup
of the system disk with dump or vdump and then use
cron to run an incremental every night to catch the
changes. If you have /var split off from you may
find the full is sufficent and that you don't need the
/var changes.
LSM is the Logical Storage Manager. The base software
supports volume concatentation and slicing. With the
license you get the extended features of mirroring,
striping and the graphic user interface.
>From cop.dec.com!sarasin Thu Mar 20 12:08:42 1997
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Date: Thu, 20 Mar 1997 13:08:49 -0500
From: Sam Sarasin DTN 339-5413 <sarasin_at_cop.dec.com>
Message-Id: <9703201808.AA03993_at_yosemite.cop.dec.com>
To: jain_at_pascal.physics.smu.edu
Subject: Re: disk mirroring on alpha
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Status: RO
Hello,
Yes, you can use Logical Storage Manager to Mirror your system disk.
See the man page for volrootmir.
Sam S
>From decatl.alf.dec.com!davis Thu Mar 20 12:20:26 1997
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To: jain_at_pascal.physics.smu.edu (Rakesh Jain)
Cc: davis_at_decatl.alf.dec.com
Subject: Re: disk mirroring on alpha
In-Reply-To: Your message of "Thu, 20 Mar 97 11:03:24 CST."
<m0w7lFM-000RAzC_at_pascal.physics.smu.edu>
Date: Thu, 20 Mar 97 13:18:57 -0500
From: davis_at_decatl.alf.dec.com
X-Mts: smtp
Status: RO
Rakesh,
There are 2 ways of mirroring your boot drive. The first
would be in hardware using a RAID type controller, ie the
swxcr or hsz40/50. The second, and more complex, solution is
to use Polycenter Logical Storage Manager to encapsulate and
mirror root and swap.
Alan Davis/dusg
>From fwi.com!rrodgers Thu Mar 20 12:30:01 1997
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From: "Randy Rodgers" <rrodgers_at_fwi.com>
To: "Rakesh Jain" <jain_at_pascal.physics.smu.edu>
Subject: Re: disk mirroring on alpha
Date: Thu, 20 Mar 1997 13:30:33 -0500
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Status: RO
Rakesh,
Instructions on how to mirror the system disk (root, swap & /usr) using
Logical Storage Manager are in the LSM manual. There is a whole chapter
dedicated to LSM Root and Swap Disk Mirroring.
Hope this helps you out.
[=================================
[ Randy Rodgers
[ rrodgers_at_fwi.com
[ System Administrator
[ Allen County/City of Fort Wayne
[ Information Systems
[ (219)449-7660
[=================================
----------
> From: Rakesh Jain <jain_at_pascal.physics.smu.edu>
> To: Alpha-OSF/1-Managers <alpha-osf-managers_at_ornl.gov>
> Subject: disk mirroring on alpha
> Date: Thursday, March 20, 1997 12:03 PM
>
> hi,
>
> I would like to mirror the system disk so that I can have a redundant
> disk system in case of crash. any ideas how I can do that.......
> I have a 3000-700 with DUNIX 3.2c. The disk I want to mirror is 4.2GB.
> Or uis there any other way I can copy the data from the disk every night
to
> other disk and be able to boot from new disk in case first one crashed?.
>
> Thanks
> Rakesh
>
>From hcia.com!rrens Thu Mar 20 13:04:30 1997
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From: rrens_at_hcia.com
To: jain_at_pascal.physics.smu.edu
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Date: Thu, 20 Mar 1997 12:02:20 -0600
Subject: Re: disk mirroring on alpha
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Content-type: text/plain; charset=US-ASCII
Richard Renshaw
03/20/97 02:02 PM
To: jain _at_ pascal.physics.smu.edu
cc:
Subject: Re: disk mirroring on alpha
If you are capable of running RAID on your system then RAID-1 is disk
mirroring. It will write the same data to a pair of disks and you only
need one of the pair to boot from. It does require that you use identical
disks or you waste the extra space on the larger disk.
(Embedded
image moved jain _at_ pascal.physics.smu.edu
to file: 03/20/97 10:03 AM
PIC13001.PCX)
To: alpha-osf-managers _at_ ornl.gov
cc: (bcc: Richard Renshaw/DV/HCIA)
Subject: disk mirroring on alpha
hi,
I would like to mirror the system disk so that I can have a redundant
disk system in case of crash. any ideas how I can do that.......
I have a 3000-700 with DUNIX 3.2c. The disk I want to mirror is 4.2GB.
Or uis there any other way I can copy the data from the disk every night to
other disk and be able to boot from new disk in case first one crashed?.
Thanks
Rakesh
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end
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