The advanced format technology defines the basic size of all disk sectors. And it also known as 4K Advanced Format. Advanced Format can help to greatly increase the storage space. It adopts the latest firmware to perfectly serve the operating system and other facilities.
For a long time, the hard disk uses byte sectors to read and store data. With the capacity of hard drive continues to increase, the hard drive manufactures decide to increase the sector capacity up to 4KB to meet demand. This technology utilizes the surface of storage media more effectively by combining data that would have been stored in eight byte sectors into one single sector that is bytes in length.
The SNR for various areal densities. At some point during this process drive manufacturers stop gaining any usable space - that is, they have to add as much ECC data as they get out of the increase areal density in the first place - which limits their ability to develop larger drives.
Drive manufacturers dislike this both because it hinders their ability to develop new drives, and because it means their overall format efficiency the amount of space on a platter actually used to store user data drops. Drive manufacturers want to build bigger drives, and they want to spend as little space on overhead as possible. But all is not lost. The principle problem here is that ECC correction takes place in B chunks, while ECC can be more efficient when used over larger chunks of data.
If ECC data is calculated against a larger sector, even though more ECC data is necessary than for a single B sector, less ECC data than the sum of multiple sectors is needed to maintain the same level of operational reliability. One estimate for 4K sector technology puts this at bytes of ECC data needed for a 4K sector, versus 40x8 for 8 B sectors.
Furthermore the larger sectors means that larger erroneous chunks of data can be corrected burst error correction , something that was becoming harder as greater areal densities made it easier to wipe out larger parts of a B sector.
As a result, the need for the larger sector is born. As for why Western Digital and other drive makers are transitioning specifically to a 4K sector, the rationale is based on the earlier problems. The x86 page size in turn has also lead to file system clusters the smallest unit of storage in a file system becoming 4KB as 4KB clusters neatly fit in to a page of memory, while the need for smaller clusters has subsided amidst a general increase in file size i.
So 4KB physical sectors map perfectly with 4KB file system clusters, which in turn map perfectly with 4KB memory pages. And hence 4KB is the largest practical size for a hard drive sector at this time. Please login or register.
Pages: 1 [ 2 ]. Read times cpeders1 Level 1 Member Posts: 2. This may be good news if you are starting with a fresh install. I have found out that advanced formatting does not work with "Legacy" operating systems, such as XP. As a workaround, advanced formatting can be turned off by installing a jumper to pins on the hard drive. In addition, there is a software solution if you are working with an existing install. This problem is not limited to D-Link, as this solution was cross checked through anouther brand of network server.
Will be trying this out later this week when the parts arrive. I've been called out twice for not posting results, so here it goes On a fresh install, I have not noticed any ill effects on a WD Green drive with the jumpers set to As a test, I noted the amount of songs in the library, ejected one of the drives, added a couple of songs and then reinstalled the drive. After a lengthy rebuild, I went back and checked the song count and found that it matched. Then I exported the library to flush out any broken links and found none.
The only down side is that using the jumper setting caused the first HD sector to not be used, which is to be expected.
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