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Partition sizes in Windows 2008

I am just about to buy a backup server (intel SSR212MC2 - 4GB RAM) with 12TB hard drive space. I am going to install Win2008:
- Is it worth installing 64bit Win2008? The server is just a backup server, it is only going to receive files from across the network .
- What are the largest partition sizes I can setup in Win2008? All 12TB are RAID 5.
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Hi Petben030,

According to MS:

Recommended: 40 GB or greater (System Partition)

Note: Computers with more than 16 GB of RAM will require more disk space for paging, hibernation, and dump files

Apparently there is a limited on partition size of 2TB. If you want to use more than 2TB partition size, you can try the GPT format on your disk when using the x64 version of Windows operating system.

GPT can support larger partition sizes. In theory, a GPT disk can be up to 18 exabytes in size (about 18,000,000 terabytes).

For more details, please refer to:


Hope this helps.

If you're planning on booting to a disk or RAID volume that is greater than 2TB, be aware that the only way this is supported is with x64 versions of Vista or 2008, using GPT partitioning scheme, and using an EFI BIOS.  Doing so would put you on the bleeding edge, and I wouldn't recommend it.  
Also note that the 2TB limit is not strictly speaking a limit on the partition size, it's actually a limit on the sice of disk that the MBR partitioning scheme can address.  MBR can address a maximum of 2^32 sectors.  Each sector is usually 512 bytes.  Hence, 4 billion * 512 = 2 trillion -> hence the 2TB limit.  
As stated above, GPT should handle a 12TB non-boot partition without a problem.
PeteAuthor Commented:
OK thanks, so to conclude when I receive my 12 TB server there will already be a 50GB C: boot partitiion (win2008x64) is it OK\recommended (I do not fancy GPT because of what RockChalk said) to setup the remaining unpartitioned space as partitions D:\-H:\, 2TB each?
Yeah, I think that'll be better anyway as you can split things like SQL and Exchange databases.

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