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IOPS

3.5-Inch Fibre Channel Solid State Drive 39

INQUIRY COMMAND (12h)

The INQUIRY command requests that information regarding parameters of the drive be sent to the

initiator. Byte 5 is ignored. See Tables 18 and 19.

An Enable Vital Product Data (EVPD) bit of one specifies that the drive return the optional vital

product data specified by the page code field. If any optional fields in the CDB are set that the drive

does not support, it will return a CHECK CONDITION status with the sense key set to ILLEGAL

REQUEST and an additional sense code of INVALID FIELD IN CDB.

An EVPD bit of zero specifies that the drive return the standard INQUIRY data. If the page code field

is not zero, the target shall return CHECK CONDITION status with the sense key set to ILLEGAL

REQUEST and an additional sense code of INVALID FIELD IN CDB. The page code field specifies

which page of vital product data information the drive returns.

The INQUIRY command shall return CHECK CONDITION status only when the target cannot return

the requested INQUIRY data. The INQUIRY data should be returned even though the peripheral

device may not be ready for other commands. If an INQUIRY command is received from an initiator

with a pending unit attention condition, the drive will perform the INQUIRY command and not clear

the unit attention condition.

Table 18. Inquiry CDB

Bit

Byte 7 6 5 4 3 2 1 0

Operation Code (12h)

Logical Unit Number (RSVD) Reserved EVPD

Page Code

Reserved

Allocation Length

5 Control

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 109 110

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SimpleTech ZeusIOPS Handbuch Seite 41