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Each password is represented by four decimal digits that are stored in NVRAM
(non-volatile memory) in a range of 0001 to 9999. 0000 is used to disable password
verification for that level.
Enabling a password causes all disabled higher levels to also be enabled to that
value. As a result, prior to accessing a higher level operation, you are prompted
first to enter the higher level password. This prevents someone from entering an
unprotected Menu mode and changing the lower-level password to defeat it.
You can also use a higher level password to gain access to a lower level operation.
For example, you can use the Service password to access the Move Media
operation. This gives full access (without validating) to the service operations.
Media can also be locked by software running on the host. The library does not
provide a touch screen override for this command. Usually, exiting the host
software restores media access. In the event of host failure, you can restore media
access by cycling the library power. Procedures for locking and unlocking
magazine doors and media are described later in this chapter.
Online
This option enables you to place the library online or offline. By default the library
comes online after a power-up initialization.
Status
This option displays the Library Initialization screen. You can identify a tape drive
type and view physical tape drive status, tape drive cleaning information, and tape
cartridge information by opening the corresponding areas on the screen as shown
in Figure 48 on page 40.
Figure 47. Edit Passwords Options screen
Chapter 4. Operation 39