Dell PowerVault TL2000 User Manual download pdf (Page 47)

IALUAE:

An implicit asymmetric logical unit access enabled (IALUAE) bit set to zero. The media changer

does not allow implicit asymmetric logical unit access state changes.

Tape Alert page (1Ch)

By means of this page the host can retrieve the tape alerts logging method.

Bit 7 6 5 4 3 2 1 0

Byte

0 PS (0) SPF (1) Page Code (0Ah)

1 Additional Page Length (0Ah)

2 Perf (0) Reserved DExcpt (1) Test (0) Reserved LogErr

3 Reserved MRIE (0)

4 - 7 Interval Timer

8 - 11 Report Count / Test Flag Number

Field descriptions:

PS: Parameters Savable. This field is set to zero. The media changer cannot write this page to

non-volatile memory.

Perf: When this bit is set to 0, this indicates that informational exception operations that can cause

delays are acceptable. This bit is always set to zero.

DExcpt:

When this bit is set to zero the reporting method indicated by the MRIE field is used. When this bit

is set to one this indicates that the media changer shall disable all information exception

operations, ignoring the MRIE field (In this mode the initiator must the Tape Alert log page).

Currently only MRIE mode 0 is supported, so this bit is ignored.

Test: Test modes are not supported, therefore this field is set to 0.

LogErr:

When this bit is set to 0, the media changer shall not log any Tape Alert events. When this bit is

set to 1, the media changer shall log Tape Alert events.

MRIE: This field indicates the method used by the media changer to report informational exception

conditions. Currently only mode 0 is supported. This means that Tape Alert flags can only be read

by polling with the LOG SENSE command to the Tape Alert page.

Interval Timer:

The library does not report Tape Alert conditions as Informational Exception conditions, therefore

this field is set to zero.

Report Count / Test Flag Number:

Since test modes are not supported, this field reports Report Count only. But the library does not

support Informational Exception conditions, therefore this field is set to zero.

Element Address Assignment page (1Dh)

The Element Address Assignment Page is used to assign addresses to the elements of the medium

changer (via the Mode Select command) and to report those assignments (Mode Sense). This page also

defines the number of each type of element present in the subsystem configuration.

Chapter 3. Supported SCSI Commands 3-33

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Dell PowerVault TL2000 User Manual Page 47