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Procedures for cloning SATA and PATA hard drives |
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Written by Administrator
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×ÏÓËÒÅÓÅÎØÅ, 28 ÏËÔÑÂÒÑ 2007 |
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The present article describes procedures for cloning hard drives (low-level copying of hard drives). The software-hardware realization of a hard drive cloning suite must comply with the following requirements: the suite shall be capable of effecting the low-level copying in all modes (PIO, DMA — Direct Memory Access) at the fastest data transfer rate (UDMA4) while directly accessing the hard drive (without using the BIOS functions) and allow controlling the hard drive’s power supply throughout the cloning process. The requirement to use the UDMA4 mode (2–3 Gb/min) is based on the following: when cloning hard drives it is always good to be able to control the process in real time so you could determine the nature of the hard drive’s surface defects and choose the most efficient copying mode; modern hard drives have ever increasing volumes, and thus cloning times have to be reduced to save time for analyzing the logical structure of the hard drive’s data or for performing other tasks; using a combination of PIO and DMA modes allows for complex reading of sectors at various access rates; copying at high speeds allows to clone hard drives with temporary (intermittent) anomalies, such as fast warm-up and failure (switch and magnetic-head assembly malfunction), fast warm-up and failure (spindle gets wedged). The requirement to operate in the direct hard drive access mode is called for by the fact that this mode allows to employ additional methods for extracting data from hard drives using the ATA13 calls. Switching the hard drive’s power supply on and off during the copying process makes it possible to counteract its hanging on defects when software reset calls are ineffective. Let’s consider in more details the hard drive cloning procedures: |
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Beta-version HD Duplicator |
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Written by Administrator
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×ÏÓËÒÅÓÅÎØÅ, 27 ÍÁÑ 2007 |
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HD Dupclicator
ñvith SCSI. | We work on new features in HD Duplicator. New program version supports SCSI of disks, show SMART attributes, a static conclusion map of a disk, with already copied blocks, at copying in some series.
We work on support USB; an opportunity of adjustment of the program during performance of copying; an opportunity to task user algorithm of work with a disk.
Interested persons, from registered users, can make inquiry for reception of the current beta-version. Any remarks and offers are accepted. |
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Last Updated ( ×ÔÏÒÎÉË, 29 ÍÁÑ 2007 )
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