Logicube SCSI-NG, Руководство пользователя

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CLONING
Logicube SCSI-
NG User’s Manual
24
ACS3 – If supported by the drive, this is set using the ACCESSIBLE MAX ADDRESS command as
specified by the ATA/ATAPI Command Set, this is the maximum LBA that is accessible by read
commands and write commands that return command completion without error.
4.3.3 Error Handling
Error Handling is available in all modes. When bad sectors are encountered on the Master drive,
the unit can either
skip the bad sectors or abort the imaging operation. This allows flexibility on
what to do when bad sectors are found on the Master drive.
When bad sectors are encountered, and error
handling is set to
Skip , the unit will write a zero on the
corresponding sector or position in the Target drive.
There is also has a setting for error granularity. There are 3 options:

1 sector (512 Bytes)

4096 Bytes (8 sectors)

64 KIB (128 sectors)
When a bad sector on the Master drive is found, by default, it will skip that sector. Changing the
granularity allows more sectors to be skipped.
A cluster size represents the smallest amount of disk space that can be used to hold a file. The
most common cluster size for an NTFS volume, for example, is 4KB (4096 Bytes). This means that
the smallest amount of space that will be used for a file is 4096 Bytes.
As an example, if 4096 Bytes is chosen, and one of the 8 sectors in that cluster size contains a
bad sector, the unit will skip the entire cluster (or 4096 bytes or 8 sectors).
4.3.4 Hash/Verification Method
The Hash/Verification method screen is available in all modes. Hash is not available in Image to
Drive but is available in other modes. Verification is available in all modes.
The Hash Method selection is shown in Image to Drive but is not
selectable. The unit will automatically use the hash method that
was selected when the image was created (using Drive to Image).
Hash – Will hash the Master drive with the selected method. There different hash algorithm
options available, depending on which Imaging mode is selected:

None – No hash of the Master will be performed. This is available only when using the
following mode:
o
Drive to Drive

SHA-1 – Uses the SHA-1 algorithm to hash the Master. This is available when using the
following modes:
o
Drive to Drive
o
Drive to Image