Re: Storage server
On 9/11/2012 6:26 AM, Veljko wrote:
> Debian reserve 1MB on start of the partition, but I
> guess that part is used for MBR.
The MBR is stored entirely in the first sector of the drive and is only
512 bytes in size. It includes the bootstrap code, partition table, and
boot signature.
The reason for the 1MB reservation is to ensure that any partitions
created will fall on 4096 byte sector boundaries of Advanced Format
drives, i.e. 4096B native sectors with 512B physical sectors presented
to the OS. This prevents the drive from being required to read two 4KB
sectors instead of one, which occurs with improper partition alignment,
causing serious performance degradation.
--
Stan
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