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Linux WD EARS Advanced Hard Drive Format

Jun 01, 2010, 11:01 (7 Talkback[s])

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"Nowadays hard drive manufactures are switching to a new hard drive technology which uses 4KB sectors size instead of conventional 512B. This new technology requires little tweaks to get a better performance in comparison to out-of-the-box settings. This article will describe some simple to follow instructions on how to partition the WD EARS hard-drive to get better overall performance. Getting the partitioning part done by aligning each partition can rapidly increase a hard drive's performance.

"512B sector size standard is here for over 30 years and therefore lots of the code written for a Linux OS has 512 number hard coded in its source. The main idea in regards to the 4 096 B size sectors is to increase the bit density on each track by reducing the number of gaps which hold Sync/DAM and ECC ( Error Correction Code ) information between each data sectors. Therefore, for 8 x 512 B sectors the track also holds 8 sector gaps.

"By having one single sector of size 4 096 B ( 8 x 512 B ) the track holds only 1 sector gap for each data sector thus reducing an overhead for a need to support multiple Sync/DAM and ECC blocks and at the same time increasing bit density."

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