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Re: [vox] wd EARS drives in Linux
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Re: [vox] wd EARS drives in Linux



On 05/05/2010 11:41 PM, Bill Broadley wrote:
> On 05/05/2010 06:47 PM, Scott Miller wrote:
>> http://www.newegg.com/Product/Product.aspx?Item=N82E16822136514
>>
>> Anyone know of any pros/cons of the newer Western Digital 'ears' model
>> drives in Linux?
>> They have 4kB sectors which are larger and different from 512B sectors
>> of hard drives in the past.
>
> With 4KB random (unaligned) writes you end up with the ugly case of 4KB
> cross the 4KB boundary so you end up reading 8KB, modify the 4KB you
> need to, and write 4KB.

Ack, sorry.

The above should read:
With 4KB random (unaligned) writes you end up with the ugly case of 4KB
cross the 4KB boundary so you end up reading 8KB (2 4KB sectors), modify 
the 4KB you need to, and writing 8KB (2 4KB sectors).

Once you are aligned it works just like a normal drive.
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