1.5.2Response and Release Condition at UNIT ATTENTION Condition Hold State

A UNIT ATTENTION condition generated by the IDD by the occurrence of the previously mentioned events is held individually for each INIT and it is held until it is released by the INIT it is held for issuing the commands specified below.

When the IDD is holding a UNIT ATTENTION condition, if the IDD receives a command from the INIT that the UNIT ATTENTION condition is held for, it performs one of the following operations depending on the type of command issued.

(1)Commands other than the INQUIRY and REQUEST SENSE commands

The IDD reports a CHECK CONDITION status to the issue command. The UNIT ATTENTION condition for that INIT is then cleared by the CHECK CONDITION status report. The sense key of the sense data generated at this time is UNIT ATTENTION [=6] and the sense codes shown below indicate the event that generated the UNIT ATTENTION condition.

ξ

Power on

[=29-01]

ξ

Reset

[=29-02]

ξ

TARGET RESET

[=29-03]

ξ Transciever Mode Changed to SINGLE-ENDED

[=29-05]

ξ Transciever Mode Changed to LVD

[=29-06]

ξ

Mode parameters changed

[=2A-01]

ξ

Reservations Preempted

[=2A-03]

ξ

Reservations Released

[=2A-04]

ξ

Registrations Preempted

[=2A-05]

ξ Commands cleared by another INIT

[=2F-00]

ξ

Spindle synchronized

[=5C-01]

ξ

Spindle not synchronized

[=5C-02]

ξ Microcode has been changed

[=3F-01]

ξ

Changed Operating Definition

[=3F-02]

ξ

Device Identifier Changed

[=3F-05]

However, if the IDD responds with a BUSY status or QUEUE FULL status due to its not being able to receive the command that was issued, the UNIT ATTENTION condition is not cleared.

The above CHECK CONDITION status response that is the cause of the UNIT ATTENTION condition hold can be prohibited by the specification of the CHANGE DEFINITION command. When the CHECK CONDITION status response is prohibited, the IDD executes the commands it receives normally, except in the case of a RESERVATION CONFLICT status, BUSY status or QUEUE FULL status. In this case, the UNIT ATTENTION condition for the INIT that issued that command is cleared.

See Section 3.1.4 “CHANGE DEFINITION” concerning setting details.

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Fujitsu MAN3184, MAN3367, MAN3735 SERIES DISK DRIVES specifications Target Reset

MAN3735, MAN3184, MAN3367, MAN3735 SERIES DISK DRIVES, MAN3367, MAN3184 specifications

Fujitsu's MAN3184, MAN3367, and MAN3735 series disk drives represent a significant advancement in storage technology, catering to the needs of businesses seeking reliability, performance, and high capacity. These drives are designed for enterprise environments, providing exceptional data integrity and speed essential for effective data management.

The MAN3184 series is renowned for its high rotational speed of 10,000 RPM, which significantly enhances data access times. With a capacity of up to 18.4 GB, these drives are suitable for applications requiring quick read and write operations. The series employs an improved read/write head technology, which reduces latency and increases overall performance. This technology is complemented by advanced error correction mechanisms, ensuring the reliability necessary for critical data applications.

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