[wellylug] USB 3.0 via PCI-e, & SATA HDD enclosures/docks

[Daniel Reurich]

On 15/07/11 23:41, Ewen McNeill wrote:
> On 2011-07-15 20:48 , Cliff Pratt wrote:
>> I've removed many (dead) still spinning disks and I've noticed the weird
>> gyro effect of tilting a fast spinning disk....
>
> My general approach for hotswap disk trays is to pull the disk out
> enough that it's no longer connected, and then leave it a bit (eg, 30
> seconds) for the platters to spin down before doing anything else with
> it. I guess (for David's situation) that deliberately telling the disk
> to spin down first might save some time there. But such software
> commands feel very 1980s "park the heads" like to me...
>
> Ewen

But hot pulling a live disk without preparing it sounds rather like 
pulling using the handbrake in your car to stop at traffic lights.

You could of course try the good old eject.  It's been claimed that it 
will spin down the harddrive and prepare the interface for removal.

'eject /dev/sdX'

Alternatively if you've sdparm installed you could issue (twice to be sure):

'sdparm -command=stop /dev/sdX'


Regards,
-- 
Daniel Reurich
Centurion Computer Technology (2005) Ltd
Ph: 021 797 722
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