Ultrium Data Cartridge On The Left; Worm; Data Security On Worm Media; Worm Media Errors - IBM Ultrium Gen 6 Installation And User Manual

Figure 9. Ultrium data cartridge on the left; WORM cartridge on the right
Type of cartridge
Ultrium 6 WORM Black and silvery gray 2500 GB (6250 GB at 2.5:1
Ultrium 5 WORM Burgundy and silvery
Ultrium 4 WORM Green and silvery gray 800 GB (1,600 GB at 2:1
Ultrium 3 WORM Slate blue and silvery
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The first set of tracks, which is 16 for Ultrium 6, 5, 4 and 3 cartridges, is written from near the beginning of the
tape to near the end of the tape. The head then repositions to the next set of tracks for the return pass. This process
continues until all tracks are written and the cartridge is full, or until all of your data is written.

Data security on WORM media

Certain built-in security measures help make sure that the data written on a
WORM cartridge does not become compromised.
For examples:
v The format of a WORM cartridge is unlike that of standard read/write media.
v When the drive senses a WORM cartridge, the firmware prohibits the changing

WORM media errors

The following conditions cause WORM media errors to occur.
v Information in the servo manufacturer's word (SMW) on the tape must match
v Inserting a WORM tape cartridge into a drive that is not WORM-capable causes
Requirements for WORM capability
The requirements to add WORM capability.
To add WORM capability to your LTO Ultrium generation 5 or generation 6 drive,
firmware must be at the correct code level, and you must use either Ultrium 5
1,500 GB WORM tape cartridges or Ultrium 6 2500 GB WORM tape cartridges.
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IBM Half High LTO Ultrium Gen 6 Internal SAS Tape Drive: Installation and User's Guide
Case color Native data capacity
compression)
1,500 GB (3,000 GB at 2:1
gray compression)
compression)
400 GB (800 GB at 2:1
gray compression)
This unique format prevents a drive that lacks WORM-capable firmware from
writing on a WORM cartridge.
of user data already written on the tape. The firmware keeps track of the last
appendable point on the tape.
information from the cartridge memory module in the cartridge. If it does not
match, a full-high tape drive will post a media error code 7 on the SCD.
the cartridge to be treated as an unsupported medium. The drive will report a
media error code J. Upgrading the drive firmware to the correct code level will
resolve the problem.
Recording format
Reads and writes data on 2176 tracks, 16
tracks at a time
Reads and writes data on 1,280 tracks,
16 tracks at a time
Reads and writes data on 896 tracks, 16
tracks at a time
Reads and writes data on 704 tracks, 16
tracks at a time
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