Needing more disk space on server - Adaptec AHA-2940UW SCSI Controller & mirrored drives

Posted on 2007-08-02
Medium Priority
Last Modified: 2008-01-09
Have a Dell Server with Adaptec AHA-2940UW SCSI Controller.  The server has two Seagate ST380011A 80GB drives mirrored.  They are partitioned with 7GB for O/S and about 60GB for data.  The server is operating properly but we are running out of disk space on the data area.  I would like to find a solution to add mirrored disk space without having to rebuild the server.  

Does this controller support more than 2 hard drives?
Is it possible to have a second pair of mirrored drives?
Question by:mikebollinger
LVL 97

Accepted Solution

Lee W, MVP earned 750 total points
ID: 19615268
The AHA-2940UW is an OLD SCSI controller and NOT a RAID controller.  If you are using RAID, then it's a software RAID.  SCSI controllers can handle at least 7 devices and that controller should be able to handle up to 14.  You would just add two more hard drives and then create the mirror in Windows.

Expert Comment

ID: 19639891
Agree with leew.
If you want to have contiguous disk space and better reliability/performance, you could add a Perc controller from Dell or a board from another vendor to have hardware RAID. In this case, you can connect additional drives and copy the volumes to the new RAID volume connected to the new card and with new drives, and then add the drives you have to this RAID volume and extend the volume.
You should always backup the whole thing before starting this procedures so you have a workaround in case there is some problem. If you have a DAT drive with OBDR you can use it to bring your system back.

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