Solved

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

Posted on 2011-03-25
3
557 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
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 47

Accepted Solution

by:
David 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

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Or at least that’s the word according to a new blog from Tech Target on AWS’s new Managed Services (MS) offering. According to the blog, AWS is launching their AWS MS program to expedite the adoption of cloud by Fortune 1000 and Global 2000 companie…
The question appears often enough, how do I transfer my data from my old server to the new server while preserving file shares, share permissions, and NTFS permisions.  Here are my tips for handling such a transfer.
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 Micro Tutorial will teach you how to reformat your flash drive. Sometimes your flash drive may have issues carrying files so this will completely restore it to manufacturing settings. Make sure to backup all files before reformatting. This w…

617 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