HP BACKCOPY Reference Manual page 270

Effect. DSAP or DCOM stops.
Recovery. Reenter the command correctly.
filename WRITE ERROR:
Cause. DCOM tried to perform a WRITE on the filename but encountered an error.
Effect. DCOM continues its compression activities. It ignores this file, working around it, until it
reaches the maximum number of extent moves specified.
Recovery. For corrective action for the error number indicated by nnn, see the Guardian Procedure
Errors and Messages Manual.
ERROR: To display disks > 72 GB, use the TERAFORM option
Cause. The TERAFORM option is not specified.
Effect. DSAP returns an error.
Recovery. Rerun the command with the correct syntax.
270 DCOM/DSAP Messages
nnn