Quantum P3000 Guide de l'utilisateur télécharger pdf (Page 125)

Appendix C Automatic Drive Cleaning

Monitoring the Drives

Quantum|ATL P3000 Series User’s Guide 105

Monitoring the Drives

In host-initiated cleaning mode, the host is responsible for

monitoring the drives to determine when a drive needs to be

cleaned.

In automatic cleaning mode, the library monitors the drives to

determine when a drive needs to be cleaned.

Each drive “CLEANING_ REQUIRED” flag is checked at the

completion of an inventory.

A specific drive’s “CLEANING_REQUIRED” flag is checked at the

completion of a Move Medium command involving that drive.

Media Movement to the Drive

When a cleaning cartridge is selected, the library moves it to the

drive requiring cleaning. If the movement operation is not

completed due to an unrecoverable error, the drive cleaning

operation does not proceed, and the library returns the cleaning

cartridge to its original storage element. If an unrecoverable error

occurs when moving a cleaning cartridge that prevents a

subsequent host initiated command from completing, a check

condition is set in the returned status byte and a subsequent

Request Sense returns the appropriate error (such as Transfer

Element Full). Since the drive still indicates that it needs cleaning, a

new drive cleaning operation is attempted.

If a library-initiated cleaning cartridge movement is in progress

and the host issues a command that requires the use of the

transport, the host-initiated command is held until the library-

initiated movement is completed. If an error occurs with the

library-initiated movement, the host initiated command is

processed following the error. If a subsequent error occurs, a check

condition will be set in the returned status byte and a subsequent

Request Sense will return the appropriate error code.

1 2 ... 120 121 122 123 124 125 126 127 128 129 130 ... 145 146

Pas de commentaire

Quantum P3000 Guide de l'utilisateur Page 125