Dual Active Accessor Status

When the dual active accessors feature is installed, it may be enabled or disabled. Figure 31 shows the pop-up window for the transition into the dual active accessor mode, and Figure 32 shows the pop-up window for the transition out of dual active accessor mode. Each of these windows is shown until the transition is complete.

Figure 31. Dual Active Accessor Status Ð enabling

Figure 32. Dual Active Accessor Status Ð disabling

Informational States

In addition to the operational states, the following informational states further de®ne the state of the 3494 (one or more of which can occur at the same time):

Degraded operation

Indicates that a component of the library is unavailable (except 3490E/3590 and Virtual Tape Server subsystems). When Model HA1 or the Dual Active Accessors feature is installed, this includes the ability of the standby library manager or the standby accessor to take over in the event of a failure.

Safety interlocks open

Indicates that an interlock (front door) on the safety circuit is open.

Vision System non-operational

Indicates that the vision system has failed and is unable to read the external volume labels on the cartridges.

Chapter 4. Operational Modes and States, and Informational States 67

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IBM Magstar 3494 manual Dual Active Accessor Status, Informational States, Degraded operation, Safety interlocks open