On Thursday 16 December 2010 07:47:18 Mark Knecht wrote: > On Thu, Dec 16, 2010 at 7:29 AM, Volker Armin Hemmann > <volkerar...@googlemail.com> wrote: > <SNIP> > > > again, the hardware to hotplug is built into every sata connector. What > > is left is the controller not getting confused and the driver. > > Every SATA connector? External connectors yes. Internal connectors no.
wrong. EVERY connector. The arrangements of the the contacts guarantee an electrical save hotplug event. > > > AHCI as a standard says yes to hoplugging. So as long as you use a AHCI > > compliant sata controller you can hotplug. > > Interested readers should be _VERY_ careful about listening to > previous advice. The major difference between the internal and > external SATA cables & connectors, a ***particularly*** important part > of hotplugging, is that the external connector ensures that ground is > connected before the signals. this is true for ALL connectors. > This ensures that in the case of static > electricity the drive becomes grounded to the computer which is done > to eliminate ESD (electro static discharge) events which will damage > either the drive or the controller. (Depending n which is charged.) > > If you are using an internal power supply and have drive power already > attached when you hotplug an internal cable then likely you will be > just fine. > > If, on the other hand, you have a SATA drive sitting on a bench using > a separate power supply then hotplugging with an internal cable is not > recommended. and suddenly you are opening a completely different box.
