5 Replies Latest reply: Jun 20, 2012 9:53 AM by Bob Timmons
StudioGeek Level 1 Level 1 (40 points)

Greetings,

i have two identical 2.5 USB drives connected to a powered USB hub, connected to a (single radio) AEBS accessed by a 2011 MBP running Lion.

 

One drive mounts on desktop reliably (via login items) and can be used normally, the other drive mounts intermittently and when mounted, cannot handle a sustained transfer over a few GB.

 

The drive dismounts with this message: Volume “MMA+” can not be used and will be ejected because it is no longer available. It than usually cannot be seen again until I reboot the AEBS or the drive.

 

One drive mounts with it's custom icon, the reluctant drive gets a generic blue (remote volume?) icon almost each time it mounts. Occasionally it mounts showing "0" items until re-connected.

 

I have turned off "put drives to sleep" in Energy Saver.

 

Both recently got Diskwarrior etc. treatment and are fine.

 

Any ideas what this may be, or how to remedy it?

 

SG