ben

I want to make sure I understand how cluster size effects maximum
volume size on windows server 2003 SP1.

If a GPT style volume has a cluster size of 512bytes, is it's maximum
size 512 * 2^32? Which is exactly 2TB.

If I use 1024bytes, would the maximum increase to 1024 * 2^32? Which
is exactly 4TB.

On and on for bigger cluster sizes until 256 TB is reached.

Is this true?

Thanks,

Ben

j de boyne pollard

B> Is this true?

No. Volume sizes are determined by (a) overall limits imposed by the
partitioning scheme and whether the volume is required to be firmware-
accessible, (b) the filesystem type, and (c) the allocation unit size.

<URL:http://homepages.tesco.net./~J.deBoy.../os2-disc-and-
volume-size-limits.html>

john fullbright

Cluster size Maximum NTFS Volume Size (bytes RAW)
512 2,199,023,255,040 (2TB)
1,024 4,398,046,510,080 (4TB)
2,048 8,796,093,020,160 (8TB)
4,096 17,592,186,040,320 (16TB)
8,192 35,184,372,080,640 (32TB)
16,384 70,368,744,161,280 (64TB)
32,768 140,737,488,322,560 (128TB)
65,536 281,474,976,645,120 (256TB)

From: http://support.microsoft.com/kb/302873/en-us

These are maximum sizes. There are several factors that impact the actual
size you can obtain from a given NTFS volume.

ben

Thanks guys.