CA ARCserve Backup r12 build 5454 on Windows 2000 SP4. Have been using remote FSDs on Server 2003 box for a long time. Shared folders are on 500GB USB drives that are rotated as they fill up. Recently upgraded from 11.5. Just did a swap and get "Inaccessible File System Device". First it was telling me that the FSDs (GRP3 "mail" and GRP4 "file") were write protected when I tried to format or erase (new one on me). I stopped all CA services, unshared the folders, deleted the old data. Reshared and now get the present message. Deleted them altogether and made new ones. In Device Group Configuration, they are now listed as "PGRP0 <Device:5> FSD1" and "PGRP1 <Device:6> FSD2". Attempt to format gives "Device <5> Format Failed! FAILED TO WRITE VOLUME HEADER" and erase gives "Device <5> Erase Failed! COMMAND ABORTED"
All share permissions on folders the same as usual. Using the domain administrator account, not the ARCserve system account, as usual. The device path is correct for each FSD under "summary". Snaplock "no". Volume free space 98%.
Just 2 more weeks with this wretched, diabolical program; 11, 11.5, now 12. This is the last time I will have to do this.