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Data Volumes
Users (provides U: and F
: ): Backups start at 10pm every night. Base backups run on Fridays and take four or five hours to complete, barring any difficulties. The other nightly backups are differential backups. The Users volume is backed up to tape. We keep the base backups for six weeks, and the differential backups for three. Backups can persist outside that window if the system does not need to reuse the tape.
Depts (provides O: and G: ): Backup times vary. The base backup runs on Saturdays starting at 7am. Differential backups are at 1am and occur on Tuesday through Friday. The Depts volume is backed up to tape. We keep the base backups for six weeks, and the differential backups for three. Backups can persist for longer if the system does not need to reuse the tape.
Courses (provides P: and K: ): Backup times vary. The base backup runs on Saturdays at 3pm. Differential backups occur on Tuesdays, Wednesdays, Thursdays and Fridays at 5am. The differential backups. We keep the base backups for six weeks, and the differential backups for three. Backups can persist outside that window if the system does not need to reuse the tape.
Other Causeway backups
*eDirectory* (directory service used for the majority of networked services and logins, including email): The "DREW" tree is backed up nightly to disk at 6pm usingthe traditional TSANDS-based method. Every backup is a base backup. Backups are kept for two weeks. In addition, we perform a DSBK-based backup of eDirectory at 5:45pm.
*Apps and others* (provides drive M:, backup also includes the disk used for network printer spooling, the SYS: volumes of the Netware servers): Backed up to disk weekly on Saturdays at 8pm. Backups are kept for two weeks.
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