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RAID 5 Question

I have an HP Proliant ML350 G3 server with RAID 5 configuration with 3-36GB hard drives.
When I go into Windows Explorer on the server, it states the Total hard drive size is 55.8GB.
It also states that Local Disk (C:) has a Total Size of 12.0GB

Looks like this:
                     Total Size
Local Disk (C:) 12.0 GB
Data (E:)         55.8 GB

Here are my questions:

1)Is the local Disk C: a separate drive from the 3 other 36 GB drives?  I cannot phyiscally see it inside the box.  My problem is have approx. 1.5 GB of the 12.0 GB on Local C: remaining.  Need to add more capacity in this area.  How do I do this?  

2)If I have a RAID 5 configuration w/ 3-36 GB drives, where is the 55.8 GB coming from.

I am confused.


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kflinn15
Asked:
kflinn15
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1 Solution
 
CallandorCommented:
When you set up a RAID-5 array, you need a minimum of 3 drives, and your total disk space is the number of drives minus one, which means 72GB in this case.  72GB is the actual size available, but OS'es count bytes in binary, so it sees 72GB/1024^3 = 67GB (roughly).  The 67GB is partitioned into 12GB and 55GB logical partitions (again, roughly).  If you want to expand the C drive, you will need to use a tool like Partition Magic to reallocate space from the E drive.  Be sure to make a backup before you touch the partition table.
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kflinn15Author Commented:
It doesn't appear Partition Magic supports W2K3 Server?...
Suggestions on others or do you believe it does?
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CallandorCommented:
Consider Partition Manager, recommended by another expert: http://www.experts-exchange.com/Operating_Systems/Windows_Server_2003/Q_20861878.html
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David_FongCommented:
Cal, don't forget that you can put multiple logical disks on a single array with a Smart Array controller in which case the OS sees each logical disk as a seperate drive. If that's been done partition manager won't help.
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kflinn15Author Commented:
David,  
How would I determine if this is the case in my scenario?
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David_FongCommented:
Run the array configuration utility under HP (or Compaq) system tools and you can see whether there is one or two logical drives listed under parallel SCSI array A.

12GB ought to be enough for C: anyway, you've probably got it filled up with servicepack files or backup software catalogs.
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kflinn15Author Commented:
I have 1 logical drive.
What would you suggest; deleting servicepack files etc or attempting to re-partition?-->or something else?
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CallandorCommented:
The safest route is deleting or moving unnecessary files to free up space.  The less messing around with partitions, the better.
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