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Windows Server 2003 restarts while configuring RAID 5

Hello,
Server with 500GB HDD (windows Server 2003 enterprise 32Bit) and everything is OK.

When we add 3 HDDs (1 TB each sata) as raid 5 everything is fine.

When we add 4 HDDs (1 TB each sata) as riad 5 OS restarts while logging to windows.

Any idea

Thank you in advance,
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smartbusiness
Asked:
smartbusiness
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6 Solutions
 
OsmozeCommented:
can you start with the failsafe mode (f8 in windows startup ) and check to events log for any critical errors ?
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wct296Commented:
3 x 1 TB RAID 5 =2 TB - thats fine
4 x 1 TB RAID5 goes over your 2Tb windows limit.

You cannot install windows on a drive greater than 2Tb, you can only mount it as a GPT disk (which allows for over 2Tb per disk)
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wct296Commented:
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DavidCommented:
I confirm wct296's analysis.  You are over the 2.09TB limit.  Unless your host is an Itanium-based machine, you are just going to have to limit the size of the C drive to 2.09TB or less.
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andyalderSaggar makers bottom knockerCommented:
As I read it they have a 500GB disk for the OS and are just adding this as an extra RAID 5 array so the 2TiB limit shouldn't come into play except that they would need to use GPT which doesn't require EFI/UEFI, it certainly shouldn't make the server reboot when logging in. Need confirmation of that and more info on hardware and whether it's hardware or software RAID.

BTW, UEFI is no longer restricted to Itanium, recent Dell and IBM X64 modes use it but I don't think it comes into this question if they are retaining the 500GB disk to boot from, the 2TiB boundary could easily be the problem though, maybe firmware or driver.
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OsmozeCommented:
Hi,
have you checked the Event log ? in failsafe mode ? just in case of ..
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smartbusinessAuthor Commented:
Thank you everyone for your kind support. A small question please: HP server with 1.8TB internal HDD. I plugged one external WD 2TB hard disk and everything is OK.

But when I plugged another external 2TB WD hard disk windows SBS 2011 didn't see it.

May I know whey
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andyalderSaggar makers bottom knockerCommented:
I think you'd better confirm the configuration of what's in this system first rather than asking another on the back of it. Is it a 500 GB boot disk plus adding 4 1TB ones for data or has the original 500GB been tken out (which it doesn't sy in the question).
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smartbusinessAuthor Commented:
No in fact right now I'm talking about another computer which has an internal HDD with around 1.8TB.

I plugged two external WD HDD (2TB each) and everything was OK.

But when I plugged another external WD HDD (2 TB) windows didn't show the last one.

any ideas.
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DavidCommented:
Perhaps that other HDD is dead?   Did you bother testing it in another PC?
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smartbusinessAuthor Commented:
yes it is working fine
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DavidCommented:
Sufficient power?  
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smartbusinessAuthor Commented:
maybe I'm not sure.
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OsmozeCommented:
hwo did you plug the disk on the machine ? SAS ? IDE ? USB ? Fibre ? iSCSI ?
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smartbusinessAuthor Commented:
USB
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DavidCommented:
So you are trying to mix & match a RAID5 with one disk USB, and others attached via some other means?  This is universally a no-no.
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OsmozeCommented:
You cannot create a Raid with disk from differents controller !

 if you want to implement raid with usb disks  look at this .

http://www.techeblog.com/index.php/tech-gadget/usb-20-based-raid-5-solution 
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andyalderSaggar makers bottom knockerCommented:
You should deal with the first question you asked rather than piggy-back another onto it. Unsub.
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smartbusinessAuthor Commented:
Thank you.
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