Re: [smartmontools-support]Load/unload cycle

[Bruce A. <ba...@gr...>]

Jeannot,

I'm not sure about this, but I think that Load/unload cycle refers to the
process of 'parking' the disk drive head off to the side of the disk
drive.  This generates some stress on the drive mechanics. It should be
monitored by one of the SMART attributes.

I took a quick look at the specs:
http://ssddom01.hgst.com/tech/techlib.nsf/techdocs/E18F32BF97E21A7786256D490063136D/$file/T7K60_sp(EA)3.1.pdf

On page 160 it identifies Attribute ID=193 as Load/Unload cycle count.

When Hitachi bought IBM's disk drive business, IBM had (IMHO) the best
(publicly available) OEM documentation out there.  Looks like Hitachi is
keeping that tradition alive.

Cheers
	bruce


On Wed, 13 Apr 2005, jeannot marcel wrote:

> Hello everybody,
> i've got a hitachi Travelstar E7K60, on the hitachi
> disk specifications page, i can see on "reliability"
> part : Load/unload cycle 300,000 (for informations,
> this specifications page is at
> http://www.hitachigst.com/hdd/support/e7k60/e7k60.htm
> ). *Is anybody knows what mean this parameter?
> *i made a SMART test on it and i've : 
> -----------------------
> Load_Cycle_Count RAW_VALUE 31
> -----------------------
> Is this the same value?
> Thanks very much for the reply.
> 
> 
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