MSA 2212fc

[muruggan]

Hi All,

We have allocated 50 GB space to a window server but we could see only 45 GB space on the server as unallocated space.. could you please guide what files would occupy from the MSA on that 5GB appx space

[Matti_Kurkela]

Most of the difference is probably caused by the fact that there are two possible ways to calculate disk space.

Disk manufacturers prefer to use decimal prefixes in calculating disk space, because it allows them to print slightly larger values in their marketing materials for a given disk capacity:

1 kilobyte = 1000 bytes
1 megabyte = 1000 kilobytes = 1 000 000 bytes
1 gigabyte = 1000 megabytes etc.

Computers, on the other hand, natively use binary prefixes:
1 kilobyte = 1024 (= 2^10) bytes
1 megabyte = 1024 kilobytes = 1 048 576 bytes
1 gigabyte = 1024 megabytes etc.

If your 50 GB disk space is actually exactly 50 000 000 000 bytes in size, and your OS uses binary prefixes to display the size, the number of gigabytes you might see is
50 000 000 000 / (1024^3) = about 46.566 GiB.

Then subtract the space reserved for the disk and filesystem metadata (partition table, boot record etc.) and round down, and you might get 45 GiB.

There's a standard which is intended to solve the 1024 vs. 1000 prefix ambiguity, although some people think the suggested new prefixes are a bit silly:
http://en.wikipedia.org/wiki/Binary_prefix

MK