[mythtvnz] System freezes thrashing HDD

[Steven Ellis]

On 26/04/2010, at 7:57 AM, Tony Sauri wrote:

> On Mon, 26 Apr 2010 06:56, Steve Holdoway wrote:
>> On Mon, 2010-04-26 at 00:13 +1200, Steven Ellis wrote:
>>>> Take a look at this link:
>>>> 
>>>> http://www.greengecko.co.nz/node/21
>>>> 
>>>> "WD Green disks are formatted with 4096 byte blocks, not the usual
>>>> 512.
>>>> While this shouldn't be a problem, it doesn't report this fact
>>>> properly.
>>>> Also, if partitions aren't actually created on a 4k boundary, then
>>>> performance slows to a crawl."
>>> 
>>> Currently only the 2TB models have 4096 byte blocks so this is
>>> unlikely.
>> 
>> This statement is incorrect, as my example of a 1TB disk shows. It's (at
>> least - there may be others) the 'R' of EARS in the part number that
>> identifies disks with 4KB blocks.
>> 
>> Steve
> 
> This document seems to confirm your understanding:
> http://www.wdc.com/wdproducts/library/SpecSheet/ENG/2879-701229.pdf
> 

Sorry I stand corrected. The WDxxEARS models with 64MB Cache all have 4K Block sizes. Picked up some 2TB disks the other week and could only get the older style through my suppliers, and none were even quoting on Sub 2TB EARS models.

Steve


Steven Ellis - Technical Director
OpenMedia Limited
email   - steven at openmedia.co.nz
website - http://www.openmedia.co.nz

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