External Lacie Hard Disk doesn't STOP when I STOP the iMac

[corbetz]

Hello there !

I've recently bought a LACIE Neil Polton USB 2 1TB external Hard Disk and connected it to a USB hub where already stand 2 more Lacie external drives (previous generation).

I use them with my iMac Alu and Leopard 10.5.3.

The issue is that when I put the iMac in the STOP mode, all the other 2 discs (1 of them is for Time machine) correctly stop [led on, spinning off]. But the new disc is stucked ON: led on and spinning on. That's noisy and annoying...

Some more info:
- the new disc is Mac OS Journaled formatted and it's just for archiving videos and other stuff;
- all the disks are individually powered with AC cord;
- all of them are connected to the same Hub USB;
- the new disk and one of the old disk have a switch (just on/off positions) on the back and - of course - they're both set to ON;
- I've tried several time to reboot the system but no luck.

Any guess on how to make that disk sleep, too ?

Thank you !

 

[asme]

Different hard drive control chipsets, different power-down rules.

The spinning-when-sleep one will power down anywhere from 30 seconds to five minutes after your iMac sleeps.

 

[corbetz]

I've tried what you suggested but even after 10 minutes the disk is still there: ON and running...

 

[TheReef]

Take the drive off the hub and try, the hub might still be sending signal to the drive preventing it from sleeping.

 

[corbetz]

LACIE replied to my support request stating that the model of disk I've bought (Neil Poulton external 1 TB) does not have the stop-disk feature.

They even suggested me to try to connect the external disk right into iMac's USB port. Actually I haven't already tried, but since they say that it's not compatible...

Maybe this may be useful even for other users...