RAID-6 partition limit

Tomasz Wojtczak
Tomasz Wojtczak used Ask the Experts™
on
Hello.
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?

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Rajul RajInformation Security Officer

Commented:
4TB Hard Drives Bring RAID 6 To Its Limits
President
Top Expert 2010
Commented:
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

Author

Commented:
Done it. I changed boot too UEFI and changed raid contlorer drivers  and now i have 100GB and 7,5TB partitions :)
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Commented:
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.

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

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

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

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