Media Validation Types

The type of validation which determines the length of the test and level of validation.

Type T10000 Description LTO Description Duration per Tape

Basic Verify

  • Simple mount and dismount of the cartridge to determine if MIR is unreadable or out of sync.
  • This is the only test that is valid for blank tapes.
  • Simple mount and dismount of the cartridge. Reads the CM on the mount.
  • This is the only test that is valid for blank tapes.

2 minutes

Standard Verify

  • Starts at the beginning of tape.
  • Reads 1000 records from the beginning of tape (the highest-priority area of media).
  • Reads the wrap that contains the end of data (EOD).
  • Reads the outermost wraps on top and bottom bands to verify edges.
  • Records are not decompressed nor decrypted.
  • Starts at the beginning of the tape.
  • Reads 2 wraps, then stops the validation.
  • Records are not decompressed nor decrypted.

Maximum of 30 minutes regardless of the data and the compression ratio used

Complete Verify

OR

Resume Complete Verify

  • Starts at the beginning of the tape or resumes where it left off.
  • Verifies all data records on the tape are readable.
  • Reads data at tape speed.
  • Records are not decompressed nor decrypted.
  • Starts at the beginning of the tape. Resume is not available.
  • Verifies all data records on the tape are readable.
  • Reads data at tape speed.
  • Records are not decompressed nor decrypted.

T10000C — 6 hours max

T10000D — 9 hours max

LTO — 5 to 24 hours

Complete Verify Plus

OR

Resume Complete Verify Plus

  • Starts at beginning of the tape or resumes where it left off.
  • Verifies all records on the tape are readable.
  • Checks Data Integrity Validation (DIV).
  • Data is decompressed and decrypted if records contain cyclic redundancy check (CRC) codes added by host. The drive must be encryption capable and connected to Oracle Key Manager. Not valid for FICON drives.
  • Not available

T10000C— 6 hours for compression ratios less than 2.5:1.

T10000D — 9 hours for compression ratios less than 3:1

Rebuild MIR

  • Starts at last-known valid position in the MIR, or the beginning of tape to rebuild MIR.
  • Verifies the MIR and rebuilds it if necessary. Records are not decompressed nor decrypted. The drive reads the data a tape speed.
  • Not available

T10000C — 5 hours max

T10000D — 9 hours max