RAID-6 partition limit

Tomasz Wojtczak
Tomasz Wojtczak used Ask the Experts™
I have purchased a Fujitsu server.
I have 6 HDD 2TB and created RAID-6. I need to install Windows Server 2012R2. During installation I created 100GB partition for system, and then windows setup split rest of free space to two unallocated free space. I need that space all for one partition.
Are there some restrictions to size of partition or am I doing do something wrong?

Watch Question

Do more with

Expert Office
EXPERT OFFICE® is a registered trademark of EXPERTS EXCHANGE®
Rajul RajInformation Security Officer

4TB Hard Drives Bring RAID 6 To Its Limits
Top Expert 2010
Unless you have a UEFI BIOS, (or an Itanium chip), then the largest volume size you can install the O/S to is 2^32-1 blocks = approx 2.09 TB


Done it. I changed boot too UEFI and changed raid contlorer drivers  and now i have 100GB and 7,5TB partitions :)
Ensure you’re charging the right price for your IT

Do you wonder if your IT business is truly profitable or if you should raise your prices? Learn how to calculate your overhead burden using our free interactive tool and use it to determine the right price for your IT services. Start calculating Now!

Just to clarify, RAID-x does not, inherently, impose *any* size limits on the array.  That's not to say that the controllers can't access individual drives beyond a certain size which therefore imposes a controller limit on the size of the array.

The file system, however, can (and does) impose a size limit on the logical drive volume.

Lee W, MVPTechnology and Business Process Advisor
Most Valuable Expert 2013

Partitions are bad.  create RAID VOLUMES.  Store you VMs on a separate volume from the host os.
Top Expert 2010

The author acknowledged that changing bios to UEFI resolved the problem.

Do more with

Expert Office
Submit tech questions to Ask the Experts™ at any time to receive solutions, advice, and new ideas from leading industry professionals.

Start 7-Day Free Trial