HP BL536A User's & Service Manual page 63

NOTE: LTO 2 and 3 tape drives must be empty to download support tickets. LTO 4 tape drives
with firmware newer than B34W (parallel SCSI) or U24W (SAS) will automatically generate a
support ticket during an unload and that ticket may be downloaded at any time. LTO 4 tape drives
with older firmware must be empty to download a support ticket. Gathering a current ticket for an
LTO 4 tape drive may cause a temporary performance decrease while the ticket is generated.
Figure 57 Support: Support Ticket page
Remote management interface (RMI) 63