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How to set up Raid mirroring on SBS 2003

Posted on 2007-12-04
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How do I set up Raid mirroring on a new sbs 2003 installation I will b doing on a server with hotswappable disks?
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Question by:Amritash
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by:wmeerza
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will you be using h/w or s/w raid and what sort of configuration do you want eg
OS on raid 1 (2 disks), data on raid 5 (minimum 3 disks), what sort of data will you be storing (sql, exchange etc etc). These questions may help provide a better solution.
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Lee W, MVP earned 50 total points
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SBS includes Exchange and SBS premium includes SQL.  However, since he says he wants to use mirroring, then he only has two disks and a RAID 5 is out as well as a RAID 10 and any possibility of combining them.

Since he's using hot swap disks, I'm going to assume (hope) he's using a Hardware RAID controller.  Given that, you setup the RAID in the RAID controller software OR using the Dell OS setup disk.
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by:wmeerza
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thanks Leew, i'm aware of that, just trying to get more info (has he only got 2 disks?)
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by:Amritash
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yes only 2 disks. The third one I want to use for data backup. I want to Raid mirror the OS,exchange,sql & ISA.

Can u advise pls.THks.
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by:wmeerza
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ok, then do as leew says and create a raid 1 based on your controllers instructions.
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by:Lee W, MVP
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That's not going to be your only backup will it?  What happens if there's a fire or flood or theft?
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by:Amritash
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I will have the data backup on the other hotswap drive which will b stored offsite. DO u suggest also having another backup of the OS and ISA and Exchange etc? If so what do u suggest leew?
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by:Lee W, MVP
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What do you mean?  How are you putting the data on the other hotswap drive?  
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by:Amritash
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I was going to keep the data on the primary drive. THen use the inbuilt backup facility to backup the data regularly on the 3rd drive. Thus I always have a running copy of the data an the mirrored drive and a backup on a removable drive kept at another location and updated weekly. Is this OK??

Abt my earlier question,shud i be thinking of something same for the OS,ISA,exchange,sql or is what I have done sufficient?

Shud I set up raid after configuring my SBS or before I start to congirure it with settings for a/d etc?
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by:wmeerza
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You will need to setup the raid1 first. This will ensure you have physical redundancy for os,exchange etc. Given your setup, you need to give lots of thought to how you configure your partitions for os, exchange,sql etc etc. Here is a good article to consider:
http://www.lwcomputing.com/tips/static/bootdrivesize.asp
Also your backup strategy, 1 disk hot swapped weekly is risky, how are you backing up to this disk? can you afford to lose a whole weeks data? Your business needs should be defining your backup strategy.
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by:Amritash
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Given that my disk 1&2 r raid mirrored,the realtime data already has a redundancy.

If u suggest then I can do a 2 day back up.THat shud cover it.

Can u suggest an alternative?
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by:wmeerza
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Not knowing your business i cannot give you a definitive answer. You need to consider how critical the information is to your business. If you can afford to completely loose 2 days of data then your fine.
Have you thought about using backup software to do more regular backups of your critical data? ideally to a backup device which you can then send the tapes or discs off-site.
How much critical business data do you have? is your exchange data critical? does sql contain your business data? Let me know and I can give you some pointers.
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by:Amritash
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Exchange data is critical. The other data can do with a 2 day backup.
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by:wmeerza
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ok, here is a link to a site that may be appropriate for you:
http://www.petri.co.il/backup_exchange_2000_2003_with_ntbackup.htm
Sounds like you need to have at least a daily backup of your exchange data. If you have a backup device then thats good else you may have to burn your backups to dvd/cd if the size permits.
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