SAN and Fibre Channel issues with Mac OS X versions 10.4.9 & 10.4.10 (4047324)

SAN and Fibre Channel issues with Mac OS X versions 10.4.9 & 10.4.10, specifically failure to write data to tape and disk devices.

There are known issues with Mac OS versions 10.4.9 and 10.4.10 in the following environments: SCSI, FireWire, USB, SAS, or Fibre-Channel.

The following information is from http://discussions.apple.com/thread.jspa?messageID=5883406

Since the release of 10.4.10, there are a number of issues that have surfaced with writing to tape and disk devices. For this reason, 10.4.10 is not compatible with tape devices connected to Mac OS X 10.4.10 via SCSI, FireWire, USB, SAS, or Fibre-Channel.

Other problems with XRAID, Xsan, and other disk devices communicating over these channels may also be realized.

http://www.attotech.com/troublemac.html
http://knowledgebase.tolisgroup.com/?View=entry&EntryID=47
http://support.overlandstorage.com/jive/entry!default.jspa?cateforyID=7&externalID=6041&fromSearchPage=true
http://www.google.com/search?hl=en&rls=en&q=10.4.10+backup+tape+issues&btnG=Search

Upgrade to Mac OS X version 10.4.11 or 10.5.