| Author |
Message |
Steve Brennan
Guest
|
 Posted:
Sat Oct 22, 2005 6:04 pm Post subject:
Mirrored SCSI |
|
|
Hi All,
Firstly I'll apologise as I have cross posted this question to a couple of
other newsgroups as despartion is setting in.
My boss has asked me to find the following info about breaking mirrors and
my deadline is looming.
Basically we have Windows 2000 servers with the os installed on mirrored
scsi drives (2 drives). Other drives/datra are held on a different raid
card
We are looking at upgarding to Windows 2003 and we thought that if we could
break the mirror we could leave 2000 server say on scsi disk 1 and install
Windows 2003 onto scsi disk 2.
Boot the server with disk 2 (2003 server) and if all was well re-constitute
the mirror and have scsi 2 replciate over disk 1.
If the install of 2003 did not go well we would still have the original
2000 server to fall back to re-constitute the mirror and we would be safe.
So does anyone have any advice/guidance on this, things not to do or to make
sure we do do?!?! and also just how to break mirros etc?
Would scis disk id's have to be changed? etc etc.
Thanks loads in advance for your help I'll let you all know how I get on as
this is most important to me as well as part of my yearly bonus rests on
getting this sorted :)
Cheers all.
Steve |
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 |
Ryo Kato
Guest
|
| Posted:
Sat Oct 22, 2005 6:31 pm Post subject:
Re: Mirrored SCSI |
|
|
"Steve Brennan" <steve.brennanNO1HOME@dsl.pipex.com> wrote:
| Quote: | Basically we have Windows 2000 servers with the os installed on
mirrored scsi drives (2 drives). Other drives/datra are held on a
different raid card
|
So you have 2 drives RAID1 with OS on it.
| Quote: | We are looking at upgarding to Windows 2003 and we thought that if we
could break the mirror we could leave 2000 server say on scsi disk 1
and install Windows 2003 onto scsi disk 2.
Boot the server with disk 2 (2003 server) and if all was well
re-constitute the mirror and have scsi 2 replciate over disk 1.
|
Never break a RAID intentionally! Breaking an array for such operation is
always a bad idea.
| Quote: | So does anyone have any advice/guidance on this, things not to do or
to make sure we do do?!?! and also just how to break mirros etc?
|
Take an another drive (if you don't have a SCSI spare drive, take
IDE/SATA), install Win2k3 on it and run all tests.
| Quote: | Would scis disk id's have to be changed? etc etc.
|
Depends. But modern controller should be able to handle different bus/ID,
to be sure RTFM or ask the support.
- Ryo
P.S. Don't forget to backup! |
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The Moojit
Guest
|
| Posted:
Wed Oct 26, 2005 5:52 am Post subject:
Re: Mirrored SCSI |
|
|
I would ...
1. Shutdown the machine gracefully.
2. Pull one the two drives associated with the mirror
3. Power back up. Depending on the RAID controller you may get a prompt
during POST indicating that the mirror has been broken, but the system
will still boot otherwise on the remaining disk.
The Moojit
"Steve Brennan" <steve.brennanNO1HOME@dsl.pipex.com> wrote in message
news:7s2dna4jnNZVpcfeRVnygQ@pipex.net...
| Quote: | Hi All,
Firstly I'll apologise as I have cross posted this question to a couple of
other newsgroups as despartion is setting in.
My boss has asked me to find the following info about breaking mirrors and
my deadline is looming.
Basically we have Windows 2000 servers with the os installed on mirrored
scsi drives (2 drives). Other drives/datra are held on a different raid
card
We are looking at upgarding to Windows 2003 and we thought that if we
could
break the mirror we could leave 2000 server say on scsi disk 1 and install
Windows 2003 onto scsi disk 2.
Boot the server with disk 2 (2003 server) and if all was well
re-constitute
the mirror and have scsi 2 replciate over disk 1.
If the install of 2003 did not go well we would still have the original
2000 server to fall back to re-constitute the mirror and we would be safe.
So does anyone have any advice/guidance on this, things not to do or to
make
sure we do do?!?! and also just how to break mirros etc?
Would scis disk id's have to be changed? etc etc.
Thanks loads in advance for your help I'll let you all know how I get on
as
this is most important to me as well as part of my yearly bonus rests on
getting this sorted :)
Cheers all.
Steve
|
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Steve Brennan
Guest
|
| Posted:
Wed Oct 26, 2005 10:01 pm Post subject:
Re: Mirrored SCSI |
|
|
Thanks for the info guys,
I found some info and your was helpfull too. The probelm for me was that I
couldn't test the sequence/scenario myslef and have had to pass on the info
to my boss to test.
So if all goes well great...if not we all know who he will come looking for
:)
Cheers again.
Steve
"The Moojit" <moojit@hotmail.com> wrote in message
news:arA7f.22558$Bf7.20621@tornado.texas.rr.com...
| Quote: | I would ...
1. Shutdown the machine gracefully.
2. Pull one the two drives associated with the mirror
3. Power back up. Depending on the RAID controller you may get a prompt
during POST indicating that the mirror has been broken, but the system
will still boot otherwise on the remaining disk.
The Moojit
"Steve Brennan" <steve.brennanNO1HOME@dsl.pipex.com> wrote in message
news:7s2dna4jnNZVpcfeRVnygQ@pipex.net...
Hi All,
Firstly I'll apologise as I have cross posted this question to a couple
of
other newsgroups as despartion is setting in.
My boss has asked me to find the following info about breaking mirrors
and
my deadline is looming.
Basically we have Windows 2000 servers with the os installed on mirrored
scsi drives (2 drives). Other drives/datra are held on a different raid
card
We are looking at upgarding to Windows 2003 and we thought that if we
could
break the mirror we could leave 2000 server say on scsi disk 1 and
install
Windows 2003 onto scsi disk 2.
Boot the server with disk 2 (2003 server) and if all was well
re-constitute
the mirror and have scsi 2 replciate over disk 1.
If the install of 2003 did not go well we would still have the original
2000 server to fall back to re-constitute the mirror and we would be
safe.
So does anyone have any advice/guidance on this, things not to do or to
make
sure we do do?!?! and also just how to break mirros etc?
Would scis disk id's have to be changed? etc etc.
Thanks loads in advance for your help I'll let you all know how I get on
as
this is most important to me as well as part of my yearly bonus rests on
getting this sorted :)
Cheers all.
Steve
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