Opinions: root mirror recovery

[Robert.Cross@scottish-newcastle.co.uk]

--Boundary_(ID_WYfq0QSvut/Fo/sMaTa5zw)
Content-Type: TEXT/PLAIN
Content-Transfer-Encoding: 7BIT

Small question for all the experts out there.

We have an E4000 here with an attached SSA114, running Volume Manager 2.6. Now, 
for 
resiliancy/performance reasons I've encapsulated and mirrored the root volume, 
one copy 
on a SCSI disk tray, and another on the SSA itself.

Talking to one of our Disaster Recovery suppliers yesterday, and he was saying 
that he's been told
that if the root volume gets trashed, it's very difficult to recover the system 
if the root volume is under
VM control. He's further been told that it's actually better to install 
DiskSuite from the Solaris 2.6 CD,
and use THAT to mirror the root volume.  The problem with VM is that apparently 
to recover rootvol
you need to know what the low level organisation of the disk is. This 
information was given to him 
by a lecturer on a Sun Volume Manager course he attended recently.

Has anyone out there got any experience or opinions one way or another on this?

Thanks

Robert Cross, Systems Programmer, Scottish & Newcastle plc.

**********************************************************************
The information contained in this message and any attachments:

1. does not constitute an offer or an acceptance of an offer or a
representation or warranty, nor shall it form any part of a legally
binding contract.

2. has been compiled with care but no representation or warranty
(express or implied) is made as to its accuracy or completeness and no
liability can be accepted for any loss arising from the use of any of
the information.

3. may include opinions or views, which unless expressly stated
otherwise, are not those of the company or any person in relation to
whom the company would have vicarious liability or responsibility.

4. is not guaranteed to be free from any so-called computer viruses
and it is strongly recommended that you check for such viruses before
down-loading it to your computer equipment.

5. may include hypertext links to the sites of other companies or
persons, the content of which this company has no control over and
accepts no liability for.

6. is for the exclusive use of the addressee and may contain confidential,
privileged, work product immunity and/or non-disclosable information.
If you are not the intended recipient and receive this message and any
attachments, you must not read, copy, transmit, disclose or otherwise use
any of them (or part of them) in any way (to do so may be unlawful) and
we would be grateful if you could inform us immediately of any such
receipt and subsequently entirely and permanently erase the message and
any attachments from your equipment.

E-mail is an informal method of communication and is subject to
possible data corruption.  For these reasons it will normally be
inappropriate to rely upon information contained in an e-mail without
obtaining tangible written confirmation of it.
**********************************************************************
--Boundary_(ID_WYfq0QSvut/Fo/sMaTa5zw)--