Sun Microsystems StorageTek StreamLine SL8500, System Assurance Manual

Page: 162 / 278

Content Management
140 SL8500: Systems Assurance Guide • July 2011 • E24254-01
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Cartridge Access Port Guidelines
• Whenever possible, enter cartridges through the CAP.
• When planning the workloads, place applications that require
significant enters and ejects on rails adjacent to CAP magazines.
• Use the “ TLSM ” parameter on the HSC enter command to direct
cartridges to specific LSMs. This will cause pass-thru activity.
• An alternative to using the “
TLSM
” parameter is to load only the
magazines adjacent to the desired or specific LSM.
• Use the watch_vols utility for ACSLS.
• Tip: Place labels outside the CAP indicating which magazine and
LSM gets what type of cartridge. For example:
- LSM 1 uses T9840 tape drives, load that magazine with only
9840 tape cartridges
- LSM 2 uses LTO tape drives, load that magazine with only LTO
tape cartridges
- LSM 3 uses cartridges for a specific application or job, load that
magazine with the necessary cartridge types
• Avoid using the top rail to support an application that requires a
significant number of ejects and enters. To enter and eject
cartridges from LSM 0 requires elevator pass-thru activity.
• Consider using the top rail as an archival LSM—one that uses less
active tapes; or as an LSM with very active tapes that requires fast
access, uses T9840C tape drives, with few enters and ejects.
• Flat in the slots (seated)
• Parallel to the floor
• Hub-side down
• Barcode label pointing out and
below the readable characters.
Hub-side
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Planning for Content
Figure 47 on page 141 provides space that you can use to help plan the
content of an SL8500 library.
Although operation of the cartridge access port does not directly affect the performance of the library,
here are some guidelines that can help with its overall operation.
❏
Entering cartridges
This will help operators identify what cartridges go to which LSM.
❏
Using the top rail
❏
Inserting cartridges Insert cartridges with the correct orientation:
Note: You can skip magazine
slots, but make sure all magazine
arrays are in place.