Seagate ST3655N Bedienungsanleitung PDF herunterladen (Seite 110)

SANtools® S.M.A.R.T. Disk Monitor (SMARTMon-UX)104

of 512 bytes/block. If the disk was formatted to 520 bytes per block then the total number of bytes copied would be

200 x 520 or 104,000

Feature Notes:

· You will get an error message if the range is larger than the number of blocks on the disk. Remember that disk

drives start at block zero, so if your disk has 1,000,000,000 blocks, the highest block number you can read is block

number 999,999,999.

· The program, by design, does not buffer up the I/O. Only the blocks you request are read from the device.

Therefore, this is not an appropriate technique for fast data copy.

· The starting block number and number of blocks are all decimal values (not hex).

1.31 Reassign Physical Sector

This function was introduced in release 1.26.

This function is applicable to disks that use the SCSI protocol only (SCSI, Fibre Channel, SAS, and SSA). If the

selected device is SATA or ATA, then the command will be ignored.

Disk drives determine the need to reassign physical sectors based on error activity and mode page settings. Once a

physical sector requires assignment, the drive will either reassign the physical sector (block) or recommend to the

initiator that the LBA associated with the physical sector be reassigned.

You would use this function to repair unrecovered read errors. It won't be able to get any lost data back, but at least

this provides a mechanism to make the problem go away.

Syntax

smartmon-ux -rb BLOCKNUMBER device name

- or -

smartmon-ux -rb BLOCKNUMBERh device name

where

BLOCKNUMBER is a decimal number for the block number.

BLOCKNUMBERh is a hex number for the block number, ending with the lower-case letter h. Do not put a space

between the last hex character and the h. Make sure you enter the block number as a 4-byte or less number.

Examples

smartmon-ux -rb 12345678 /dev/sg3

smartmon-ux -rb 7f8ab0h /dev/sg3

Only one block can be reassigned at a time, but this is generally not an issue since one would typically only want to

reassign one or two blocks. The program will immediately execute and return. If the block can not be reassigned, the

disk drive should be replaced (assuming you gave it a block number that really exists on the disk drive).

Below is a table from an IBM manual that shows sense data combinations for recommended reassignment. SANtools

does not necessarily endorse this as your needs might be different, but we will say that this information is

"reasonable". You should, however, consult your storage vendor for approval. For example, Seagate generally

recommends reassignment regardless of the ASCQ value. (All numbers shown in hex).

KEY

ASC

ASCQ

Description

Sync byte error - Recommend Reassignment.

Recovered data without ECC - Recommend Reassignment.

Recovered data with ECC - Recommend Reassignment.

Unrecovered read error - Recommend Reassignment.

Sync Byte Error - Recommend Reassignment.

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