Solved

Software mirroring

Posted on 2004-04-06
6
737 Views
Last Modified: 2010-04-19
I have set up a software mirror for by boot partition in Windows Server 2003.

1/. I know I can switch the disk around if one fails but it is also my belief that I can modifying the BOOT.INI to allow me to boot to either one without needing to open the case. What would be the correct syntax for two SCSI hard drives?

2/. Once booted off one or the other is there a way to tell which one I am booted off on? Somewhere in computer management maybe? I didn't see anything.
0
Comment
Question by:Gareth Gudger
6 Comments
 
LVL 20

Accepted Solution

by:
What90 earned 500 total points
Comment Utility
1)  in boot.ini you should be able to make a change to a line like this
scsi(0)disk(0)rdisk(0)partition(1) (this being the current set up) to this
scsi(1)disk(0)rdisk(0)partition(1) (this being the new set up - by changing the SCSI number to the second disk's id windows should be able to use this to boot.

Further details on this:
http://support.microsoft.com/default.aspx?scid=kb;EN-US;102873
http://support.microsoft.com/default.aspx?scid=KB;en-us;99743

2) - will just check a real sever and get back to you ;-)
0
 
LVL 20

Expert Comment

by:What90
Comment Utility
Back again. As far as I'm aware the only way to check which disk your boot off in a RAID format is a third party util or looking at the Boot.ini file and seeing which disk Windows is using.
0
 
LVL 1

Expert Comment

by:lesmydad
Comment Utility
in boot.ini you should be able to make a change to a line like this
scsi(0)disk(0)rdisk(0)partition(1) (this being the current set up) to this
scsi(1)disk(0)rdisk(0)partition(1) (this being the new set up - by changing the SCSI number to the second disk's id windows should be able to use this to boot.

0
Do You Know the 4 Main Threat Actor Types?

Do you know the main threat actor types? Most attackers fall into one of four categories, each with their own favored tactics, techniques, and procedures.

 
LVL 30

Author Comment

by:Gareth Gudger
Comment Utility
When do I use multi() for SCSI?
0
 
LVL 30

Author Comment

by:Gareth Gudger
Comment Utility
Ok, I figured it out.

I had my second disks SCSI ID set to 4. I set it to 1 and it already matched my boot.ini which I guess was correct in some aspects. I left the boot.ini using multi() instead and this seems to work fine.

Would be nice if disk management would tell you which one you are booted off. A nicety - maybe in Longhorn. :)


I am also wondering if it was partly due to my mirrors becoming unsynchronized as well.

However, I am going to award the points to What90 for the good articles.
0
 
LVL 3

Expert Comment

by:haresh-nyc
Comment Utility
it was supposed to be multi() not scsi().

multi is almost always used with ide & scsi so long as the controller supports booting.
On the rare chance you use a scsi drive with a controller which does not support booting, like a 10 year old scsi card intended for accessories instead of real hard drives, it won't boot on that, and thus you'll have to boot off a boot floppy and specify the scsi( ) number.

by the way, the scsi ID of the device is not the number you use in the brackets in the multi ( ) or scsi ( ) commands.
The number needed is the actualy physical number of the device. i.e. the first physical hard drive is 0, the second drive is 1, and so on.

This is why your system worked when you used multi(1) and it booted off the second physical hard drive.

:)
-- smile --

haresh
0

Featured Post

How to run any project with ease

Manage projects of all sizes how you want. Great for personal to-do lists, project milestones, team priorities and launch plans.
- Combine task lists, docs, spreadsheets, and chat in one
- View and edit from mobile/offline
- Cut down on emails

Join & Write a Comment

Organizations create, modify, and maintain huge amounts of data to help their businesses earn money and generally function.  Typically every network user within an organization has a bit of disk space to store in process items and personal files.   …
by Batuhan Cetin In this article I will be guiding through the process of removing a failed DC metadata from Active Directory (hereafter, AD) using the ntdsutil tool in a Windows Server 2003 environment. These steps are not necessary in a Win…
Excel styles will make formatting consistent and let you apply and change formatting faster. In this tutorial, you'll learn how to use Excel's built-in styles, how to modify styles, and how to create your own. You'll also learn how to use your custo…
This demo shows you how to set up the containerized NetScaler CPX with NetScaler Management and Analytics System in a non-routable Mesos/Marathon environment for use with Micro-Services applications.

763 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now