5.1 Mode Parameters

a.TST (task set type)

This field specifies the type of task set defined below.

Value

Description

 

 

000b

Task set per logical unit for all initiators

 

 

001b

Task set per initiator per logical unit

 

 

010b-111b

Reserved

 

 

The HDD operates according to "000b". If other value is specified in this field, the HDD reports a "CHECK CONDITION" status (ILLEGAL REQUEST [=5] / Invalid parameter in list [=26-00]).

b.Queue algorithm qualifier

This parameter controls the execution order algorithm of a command issued together with a SIMPLE QUEUE TAG.

"0000": The HDD executes commands queued from each INIT in the order in which they were received. However, the command execution order for the READ, READ EXTENDED and PRE-FETCH commands may be changed.

"0001": The HDD executes queued commands by the method selected by the HDD. At this time, the INIT must verify the correctness of the data through appropriate commands.

"1111": The HDD prohibits to order queued commands.

When other value is specified in this parameter, the HDD reports a CHECK CONDITION status (ILLEGAL REQUEST [=5] / Invalid parameter in List [=26-00]).

c.GLTSD (global logging target save disable) (not supported)

This bit specifies whether or not to permit the saving treatment of peculiar logging parameter within the HDD.

Since the HDD performs the saving treatment with itself algorithm regardless of specified value in this bit, disregards the specification in this bit.

d.RLEC (report log exception condition) (not supported)

This bit controls operations in cases where the accumulated value log parameter reaches the maximum value.

"1": The HDD reports a CHECK CONDITION status (UNIT ATTENTION [=6] / Log counter at maximum [5B-02]).

C141-C013

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Fujitsu MBA3073RC, MBC2036RC, MBC2073RC, MBA3300RC, MBA3147RC specifications Mode Parameters