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Using the Optical Disk Interface › Configuring the Optical Disk Interface › Step 3: Set Initialization and ERO Table Parameters › Migration Options

Migration Options

You have many options for how and when reports will be migrated to optical disk. The following table shows all migration options, and how to implement them. Migration to optical means that a report on primary disk is written to optical, and then the report is deleted from primary disk.

Reports with these requirements

Should have these ERO statements

(Report ID: DAILY)

  • Stay on primary disk for 3 days
  • Stay on tape backup for 6 months
  • Never go to optical disk

/DAILY DRETPD=3 RETPD=180 DSK2DAYS=999 ALL

(Report ID: MONTHEND)

  • Stay on primary disk for 30 days
  • Migrate to optical after 30 days, and stay for 7 years
  • Also kept on tape backup for 7 years

/MONTHEND RETPD=2557 DSK2DAYS=30 ALL

DRETPD includes both primary (DASD) and secondary (optical) disk retention.

(Report ID: QRTREND)

  • Stay on primary disk and tape backup for 90 days
  • Migrate to optical after 90 days, and stay there for 7 years
  • Deleted from tape backup when migrated to optical

/QRTREND RETPD=2557 DSK2DAYS=90 DSK2NOTP ALL

When you use DSK2NOTP, disk retention (DRETPD, DGENS, DCOPIES) and tape retention (RETPD, TGENS, TCOPIES) are to be equal.

In this example, even though RETPD=2557, the reports are deleted from tape when they go to optical (90 days).

(Report ID: BIGRPT)

  • Migrate to optical from primary disk at the next opportunity
  • Stay on optical for 7 years
  • Never backed up to tape

/BIGRPT DSK2DAYS=0 RETPD=2557 DSK2NOTP ALL

The reports are never backed up to tape, unless an interim backup cycle is run before the report migrates to optical.