Each [hard disk] track is composed of a series of sectors. Currently the user data on the media is stored in 512 byte sectors. The storage industry is improving this legacy architecture by changing the size of the sectors on the media to store 4,096 bytes of data rather than 512 bytes of data. Each sector has a gap, Sync/DAM (lead-in) and error correction information. Legacy architecture is very inefficient for ECC (Error Correction Code). It requires lots of overhead to support multiple blocks of ECC. With Advanced Format technology we can remove Sync/DAM blocks, inter-sector gaps and 8 separate blocks of ECC, and gain approximately 7-11% in disk space.
Is there a performance hit involved in using this technology? I only ask because I find it odd for WD to implement this on their Green series but not the Blue or Black series.
Technically the tech offers a performance advantage because error correction is more efficient, but we're told the benefit is nearly instantaneous and basically immesurable in any real-world type scenario. The tech is more about laying the groundwork for future drives, with immense capacities that will require the new format.
Marco ChiappettaManaging Editor @ HotHardware.com
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Couldn't this tech also be applied to SSDs to free up some space?
I know I sure would like to squeeze out every precious byte of storage from mine :-D
I get tired of having to remove so many things to keep usage to a minimum :-(
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I may be wrong on this acazt as this is totally new. However; the way I understand it this is still a platter technology. Whereas a SSD drive does not use platters but direct NAND memory technology. Of course that being said I don't know very much about this at all. Where it may not currently have any application on a SSD drive it is still the organization of data on a medium. That being said there may be some future implications on an SSD, in fact they may have adapted this technology from an SSD to a platter platform as well. So I would think if it were adaptable between the two it would take a while, if it is a roll over from SSD technology to platter drives it would seem (an SSD) to have the technology it is just adapted. Either way I don't know anything except what I just read either, but I would not count on it at least not for some time.
Too bad this can't be worked into existing drives.
Don't part with your illusions. When they are gone you may still exist, but you have ceased to live.
So, how does this work in Linux?
Does it just work, or is there a kernel mod required?
Sounds good though, 10% extra free.
Should work fine - Linux has supported 4k physical block size for a long time now, and it's the default in Ext3, Ext4, and other modern file systems.
What part of "Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn" don't you understand?
Still, this looks like a winner. Extra 10% space is a great boost. Most recent versions of Linux shouldn't have any problems with this, just like Windows Vista Windows 7, Mac OS X.
Drobos and TiVos are another matter. Since both use misaligned partitions, they won't be compatible.
So basically, they can now sell me a hard drive that might actually have the labeled capacity.
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