At 10:48 AM +0100 10/25/2008, Ted Treen wrote:
>I have, in the 90's, seen mobo's fried due to the switching on/off 
>of attached SCSI devices whilst the Mac was running. I was almost 
>obsessive about the sequence - power up SCSI device, power up Mac, 
>and in reverse, power down Mac, then switch off SCSI device.

And that sequence was critically important because those flavours of 
SCSI are NOT hot swappable.

>2005 dual 2Ghz G5 tower.
>SIIG-3114-R1 4-port internal SATA card
>
>My basic question is do I still have to follow the old SCSI power-on 
>sequence, or is the G5's mobo & SIIG PCI SATA card OK if the 
>external drives are powered on/off whilst the G5 is running?

SATA *can be* hot swappable, IF the controller and driver support it. 
Not all do.

You need to check the specs of that particular card.

>Logic tells me they should be

Don't guess.  Know.  Guessing wrong could damage your hardware.

- Dan.
-- 
- Psychoceramic Emeritus; South Jersey, USA, Earth

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