Solved

Missing HDD space

Posted on 2013-05-14
7
376 Views
Last Modified: 2013-05-14
Hi guys,

Just built a system with 5 x 1TB drives in RAID5 (Gigabyte GA-X79-UD5).

The array sees the right amount of space. And even windows see's the correct amount but it says it's already allocated. I have the latest BIOS installed and I'm running server 2012.

Just had a quick read up and can see the storage limitations. I can see that if I create a dynamic disk, then I can do it? I don't know how to do it? And does this mean that I don't create an array in the intel RAID BIOS?

Any help appreciated - thanks.
Storage.png
0
Comment
Question by:Talds_Alouds
  • 4
  • 3
7 Comments
 
LVL 47

Expert Comment

by:dlethe
ID: 39166599
The largest bootable RAID array with what you have is a 3-disk RAID5.  So do that, build another 2-disk RAID1.   Use the RAID1 for the O/S and write intensive apps & files.

RAID5 write performance will suck on your hardware because that controller has no caching. If you want decent performance, you'll need to buy a real controller with battery backup cache.
0
 

Author Comment

by:Talds_Alouds
ID: 39166612
Thank you. I'm not too concerned about write speeds as it's not going to be used as an actual server but rather just a workstation with a fair bit of storage/RAM.

If I get a dedicated RAID controller, will I be able to have a 5 disk array (like I currently have)? If so, what's a decent cheap RAID controller that would do this? Remembering that I'm trying to do this on the cheap.

Thanks mate.
0
 
LVL 47

Expert Comment

by:dlethe
ID: 39166665
Sorry, but decent and cheap are mutually exclusive for RAID controllers .. assuming you are buying new.  No matter what you need a controller with battery backed up cache and dedicated CPU from one of the major players that is writing device drivers and maintaining them for your O/S.

As such, my suggestion is to go with a family of products such as LSI MegaRAID, 3Ware, or late-model Adaptec and try to pick something up used on ebay.
0
Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

 

Author Comment

by:Talds_Alouds
ID: 39166887
So by doing this, I'll be able to run a 5 disk RAID5 and have a volume bigger than 2TB?
0
 
LVL 47

Accepted Solution

by:
dlethe earned 500 total points
ID: 39166897
No.  the 2TB limit on a bootable volume is a BIOS/hardware constraint with your motherboard.    May I suggest buying a pair of cheap SATA SSDs, mirroring them with windows (plugging them into the 2 local SATA ports).   Then you can go with a 5-disk RAID5, and make that the 'd' drive.

Native windows software RAID1 is very fast & reliable, plus you get read load balancing, so in perfect world, reads are 2X faster.  (Almost no performance penalty for writes).
0
 

Author Comment

by:Talds_Alouds
ID: 39166927
Awesome thanks. Just realised you said bootable.
I'll probably just use a std. HDD for OS and 5x RAID5.
Ps. isn't RAID1 bad for SSDs?
0
 
LVL 47

Expert Comment

by:dlethe
ID: 39166931
Nothing wrong with W2K12 software R1 for SSDs.  The O/S does TRIM, so it works quite well.
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

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

The article will show you how you can maintain a simple logfile of all Startup and Shutdown events on Windows servers and desktops with PowerShell. The script can be easily adapted into doing more like gracefully silencing/updating your monitoring s…
Data center, now-a-days, is referred as the home of all the advanced technologies. In-fact, most of the businesses are now establishing their entire organizational structure around the IT capabilities.
In this Micro Tutorial viewers will learn how to use Boot Corrector from Paragon Rescue Kit Free to identify and fix the boot problems of Windows 7/8/2012R2 etc. As an example is used Windows 2012R2 which lost its active partition flag (often happen…
This tutorial will walk an individual through the steps necessary to join and promote the first Windows Server 2012 domain controller into an Active Directory environment running on Windows Server 2008. Determine the location of the FSMO roles by lo…

789 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