Solved

After SBS 2003 R2 reinstall 4TB RAID5 array not present in disk manager

Posted on 2011-03-25
3
518 Views
Last Modified: 2012-06-21
I had to reinstall SBS2003R2 after a bad stripe on the OS Partition caused lots of instability. (I have good backups, so this didn't phase me.)

I followed the article to reinstall the OS from the CD-ROM product and reapplied the SP1 (I wasn't using SP2) upgrade.

Now, when I look in My Computer the 4TB partition based on a RAID5 array isn't present. This is on an Adaptec 5085 controller.

However, the 950GB partition based on a RAID1 array is present on the same controller.

My OS is on an Adaptec 2820SA controller which has 2 other partitions on it as well.

Why is my 4TB partition visible in Adaptec Storage Manager but not visible in My Computer or SBS Storage Disk Management?
0
Comment
Question by:MarcusN
  • 2
3 Comments
 
LVL 47

Accepted Solution

by:
dlethe earned 250 total points
ID: 35216816
Not all controllers handle LUNS > 2.09TB.  So check that your controller does actually work, and make sure you have the firmware & drivers updated.

Also you Need SP1 properly installed so it supports the 16-byte SCSI commands required to even address anything over that limit.   Part of the update is most likely drivers.

Probably, you just need to re-apply the adaptec drivers.
0
 

Author Comment

by:MarcusN
ID: 35218503
This all worked before so everything must have been done to make sure it works. The 4TB array is the one with all the user data on it and has always been visible.

I have updated the firmware and drivers.

None of my devices are SCSI they are all SATA.

Is there anything that could be different in the MBR of a reinstall from the MBR of the last working configuration?
0
 

Author Comment

by:MarcusN
ID: 35276021
Hi, I discovered that you were right and that the solution was relatively simple. Once I reinstalled SBS 2003 SP1, there was a fix in the service pack that enabled arrays of greater than 2TB to be recognised.

The array now appears in Disk Manager and I can access the data.
0

Featured Post

Highfive Gives IT Their Time Back

Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!

Join & Write a Comment

Ever notice how you can't use a new drive in Windows without having Windows assigning a Disk Signature?  Ever have a signature collision problem (especially with Virtual Machines?)  This article is intended to help you understand what's going on and…
Lets start to have a small explanation what is VAAI(vStorage API for Array Integration ) and what are the benefits using it. VAAI is an API framework in VMware that enable some Storage tasks. It first presented in ESXi 4.1, but only after 5.x sup…
This video teaches viewers how to encrypt an external drive that requires a password to read and edit the drive. All tasks are done in Disk Utility. Plug in the external drive you wish to encrypt: Make sure all previous data on the drive has been …
This tutorial will walk an individual through the process of installing the necessary services and then configuring a Windows Server 2012 system as an iSCSI target. To install the necessary roles, go to Server Manager, and select Add Roles and Featu…

758 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

18 Experts available now in Live!

Get 1:1 Help Now