Error backing up to usb drive from LS Pro DUO

[bs23n1b]

   

Well I learned my lesson with the Linkstation after losing a drive in raid 0. So I put 2 new 1tb drives in in raid 1 AND plugged a usb drive in to back up my data to. I scheduled a weekly backup and it fails each of the two backups it was supposed to run so far with this in the log:

 

-------- BEGIN BACKUP 2010/04/04 00:15:03 array1/BuffaloNAS -> LS-WTGL97C@usbdisk1 --------
building file list ...
26740 files to consider
rsync: cannot stat destination "/mnt/usbdisk1/_backups": Input/output error (5)
rsync error: errors selecting input/output files, dirs (code 3) at main.c(493) [receiver=2.6.8]
rsync: connection unexpectedly closed (8 bytes received so far) [sender]
rsync error: error in rsync protocol data stream (code 12) at io.c(463) [sender=2.6.8]
-------- END BACKUP 2010/04/04 00:15:08 array1/BuffaloNAS -> LS-WTGL97C@usbdisk1 --------

The USB drive is formatted in XFS, and is used for no other purpose other than backup for the LS. The strange thing is if I go in to the web admin and set up a new job as an immediate backup it works fine. The LS and USB drive are on 24/7 so I can't figure out why the scheduled backup won't run but the immediate does. The scheduled backup is set to run at midnight so nothing else is accessing the NAS.

[Dustrega]

What's the firmware versions of the devices?

[bs23n1b]

   

Dustrega wrote:

What's the firmware versions of the devices?

 

3.10 on the LS, the usb drive is a 1tb seagate that was formatted through the web admin page to xfs.

[Dustrega]

I would try re-initializing the unit.  Worst case scenario is to http://forums.buffalotech.com/t5/Storage/FAQ-2-of-3-Force-Firmware-update-procedure-please-read-this/td-p/11011" target="_self" rel="nofollow">force flash the firmware.