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50 Zeus

IOPS

3.5-Inch Fibre Channel Solid State Drive

WRITE BUFFER COMMAND (3Bh)

The WRITE BUFFER command is complementary to the READ BUFFER command as a diagnostic

function for testing logical unit memory in the SCSI target device and the integrity of the service

delivery subsystem. Only Mode 2 (Data), Mode 5 (Download Microcode and Save) and Mode 7

(Download Microcode with Offsets and Save) are supported. For all supported modes the

BUFFER_ID and CONTROL fields are not supported and must be set to 0 (zero) and the Allocation

Length must be a multiple of 4 bytes with a maximum value of 2,097,152 (2 megabytes).

Table 32. Write Buffer Command (3Bh)

The only mode fields supported are:

Bit

Byte76543210

0 Operation Code (3Bh)

1 Reserved Mode

2 Buffer ID

3 (MSB)

Buffer Offset

5 (LSB)

6 (MSB)

Parameter List Length

8 (LSB)

9 Control

Mode Value Description

2 02h Data. The OFFSET field is not supported and must be set to 0 (zero).

Where the Allocation Length is greater than 4,096 the buffer will wrap with

only the last 4K of data that was written being returned in response to the

subsequent READ BUFFER command, though this data may be returned

repeatedly. See READ BUFFER 3Ch.

5 05h Download Microcode and Save. The OFFSET field is not supported and

must be set to 0 (zero). Once the firmware has been downloaded and

verified as correct will it be saved and the drive restarted.

7 07h Download Microcode with Offsets and Save. As specified in the ANSI

documentation.

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SimpleTech ZeusIOPS Manual Pagina 52