6.3Data Block Verification Methods (Recommended)

The recommended procedure for verifying from the INIT the normalcy of logical data blocks located on the disk media is as shown below. It is desirable for the INIT to verify the data blocks after initialization of the disk media is completed or when executing alternate block allocation processing by the REASSIGN BLOCKS command.

Note:

The INIT must not recognize the defective data blocks included in the P List as normal data blocks in the verification operation.

After the INIT has written a specific data pattern for logical data blocks which is the object of verification using the procedure described below, it next reads those data or verifies the data blocks by executing Verify.

(1)Setting parameters by the MODE SELECT command

Issue the MODE SELECT or the MODE SELECT EXTENDED command and prohibit retry processing, data correction and operation of the Read-Ahead Cache feature. The necessary parameter settings are as shown below.

a.Read/Write Error Recovery Parameters (Page 1)

ξAWRE = 0, ARRE = 0

ξTB = 0 or 1

ξEER = 0, PER = 1, DTE = 1, and DCR = 1

ξNumber of Retries during Read = Zero

ξNumber of Retries during Write = Zero

b.Verify Error Recovery Parameters (Page 1)

ξEER = 0, PER = 1, DTE = 1, and DCR = 1

ξNumber of Retries during Verify = Zero

c.Caching Parameters (Page 8)

ξRCD = 1

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Fujitsu MAN3184, MAN3367, MAN3735 SERIES DISK DRIVES specifications Data Block Verification Methods Recommended

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.

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