December 22nd, 2011, 12:12 PM
[RESOLVED] block vs sector vs cluster
Im looking for clear definitioins of what a block, sector and cluster are.
My current understand is that a block is the smallest unit that can be read/written to on a physical disk.
A sector is a number of blocks.
Im not sure what a cluster is though. i have saw cluster sizes bigger and smaller than the block size so im unsure where it fits in.
I also believe that applications can read in blocks of varying sizes ( e.g. sql server reads blocks of 64kb and sometimes512 kb). so where do these blocks fit into the scheme of things?
can anyone clarify this for me and correct any inaccuracies in my understanding.
Last edited by wilson_smyth; December 22nd, 2011 at 12:21 PM.
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