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12. Appendix E
12.2.3. Data Integrity / Media Management
The System Log pages shown in the MIC layout (Figure E-2) capture significant media and data integrity statistics,
such as load counts, access counts and error correction counts (ECC). Media management software can utilize this
information and proactively copy and retire media volumes approaching the end of their useful life. Unlike other
technologies that need to capture these statistics on-tape or in a host database, the MIC-based media management
system keeps the statistical information together with the media cartridge, yet it physically separates the information
from the tape itself. This makes it possible to maintain and access the information even after the media is
reformatted or damaged. Since some of the information is maintained even when the Write Protect Tab is enabled,
the statistics are always accurate.
12.2.3.1. Sample Application for MIC
Most applications maintain the index/vendor information at the bottom of user data on the tape or in a separate
partition. This results in the necessary periodic positioning operations, which consume much operational time and
result in media and mechanical wear. If the index information is small enough to fit the available user memory in MIC
(less than 6,561 bytes for the 64 kbits version of AIT-2 contact type of MIC), it can readily be maintained in the User
Data Area. This method should result in significantly improved operational times and longer media and device life.
Note: Hardware data compression is not available for MIC data.
MIC provide UVN and UPN those are independent storage area from tape. You can write your data to MIC without
any modification for tape.
SONY AIT-1 Turbo drive SDX-450V series Ver.1.0
12-5
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