SCSI disk was popular in the past few decades because of its high speed, good expansibility and amazing reliability. Though SCSI interface is not specially designed for hard disk, it is used in a lot of disks and this kind of disk is very popular in a certain period of time until SATA interface appears later and gradually takes its place.
Nevertheless, few SCSI users care about this. SCSI data recovery is one of their most concerned things, we find. For users who lost their valuable data in SCSI disk, they often give priority to the task of how to recover data from SCSI disk. Indeed, this is the right place from which they could get a useful solution.
About SCSI Development
Read the following development history of SCSI to know features of SCSI disk clearly:
The maximum synchronous transfer rate of original SCSI standard (SCSI-1, also known as Narrow SCSI) is 5MB/s.
Then, the next SCSI standard offers two kinds of speed choices – one is to increase the frequency of data transmission to 10 MB/s (known as Fast SCSI) and the other is to double the transmission frequency and increase the width of data path to 16 bit simultaneously; the latter is known as Wide SCSI, which has a maximum synchronous transfer rate of 20MB/s and a clock frequency of 10MHz.
Afterwards, the third generation of SCSI appears, but there is no uniform standard: the Ultra SCSI with a maximum synchronous transfer speed of up to 20MB/s (Fast-20 SCSI), the Ultra Wide SCSI with a maximum synchronous transfer speed of 40MB/s and the Ultra2 SCSI with a maximum synchronous transfer speed of 40MB/s (Fast-40 SCSI).
Later, some newer SCSI standards appear: the Ultra2 Wide SCSI, which has a maximum synchronous transfer speed of 80MB/s and a clock frequency of 40MHz; the Ultra3 SCSI (also known as Ultra-160 or Fast-80 Wide SCSI), which has a maximum synchronous transfer speed of 160MB/s; the Ultra4 SCSI (also known as Ultra-320 SCSI), which has a maximum synchronous transfer speed of 320MB/s; the Ultra-640 SCSI (the latest SCSI standard), which has a maximum synchronous transfer speed of 640MB/s.
Way to Recover Data from SCSI Disk
1. Download MiniTool Power Data Recovery Free Edition V7.0 immediately after SCSI data loss. Then, save and install it to a drive which doesn’t include any data users want to recover.
2. Run this free tool to see following interface and start to retrieve hard disk data:
3. Choose “Damaged Partition Recovery” from this page if one of your partitions is inaccessible.
4. Select the inaccessible drive to scan and wait for the completion of SCSI data recovery.
5. Check all desired data and press “Save” to set storage location for them.
After all of those steps were completed, users can close software and end the work to recover data from SCSI disk.