
15
3-5 Handling Media
Chapter 3 Preparations
3-5 Handling
Media
3-5-1 Media Used for
Reading and Writing
This unit uses the following Optical
Disc Archive Cartridges and similar
media for reading and writing.
• Deleting files from the media will not
increase the available storage space
for either write-once or rewritable
type cartridges.
• In the case of write-once type
cartridges, pay attention to the
following points.
- Reformatting the media will not
increase the available storage
space.
- Repetitive file writing will consume
the available writable space (for
writing the media management
data, etc.) on the media. If there is
no available writable space on the
media, file writing may be
disabled, even if sufficient storage
space remains.
- No file can be written after the
media is finalized.
• Select the number of files (60,000 or
240,000) which can be created
during formatting.
• Rewritable media allows you to
select the number of files that can be
created during reformatting, while
write-once media does not. The
number of files (60,000 or 240,000)
that can be created is retained when
formatting for the first time.
• If the media has been formatted
when the number of files which can
be created is 240,000, depending on
the recover file functions, the
recovery rate may not be as good as
the rate for 60,000 files.
3-5-2 Notes on Handling
Handling
The Optical Disc Archive Cartridge
houses 12 discs in a shell, and is
designed to allow handling free of risk
from dust or fingerprints. However, if
the cartridge is subjected to a severe
shock, for example by dropping it, this
can result in damage or scratching of
the discs. If a disc is scratched, it may
be impossible to write data, or to read
the data written on the disc. The
cartridge should be handled and
stored carefully.
• Do not remove any discs from the
cartridge.
• Do not disassemble the cartridge.
Cartridge Media
type
No. of files
which can
be created
ODC300R
Capacity:
300GB
Write-once 60,000 or
240,000
ODC300RE
Capacity:
300GB
Rewritable 60,000 or
240,000
ODC600R
Capacity:
600GB
Write-once 60,000 or
240,000
ODC600RE
Capacity:
600GB
Rewritable 60,000 or
240,000
ODC1200RE
Capacity:
1.2TB
Rewritable 60,000 or
240,000
ODC1500R
Capacity:
1.5TB
Write-once 60,000 or
240,000
Notes