Seagate ST39251LC Uživatelský manuál stáhnout pdf (Strana 5)

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1 Introduction

The SCSI hard drives are widely used for servers and other high-end software products, however, 24-hour

interrupted working as well as many years of running, the damage rate of SCSI HDD appears to be rising in

recent years. Generally the server HDD accommodates the very important data, if the data was lost, the

consequence is hard to imagine. SRT FOR SEAGATE SCSI HDD is specially designed to repair the firmware issue

occurring on Seagate SCSI HDD. The users who know the professional knowledge can solve SCSI HDD firmware

issue before, so we developed SRT (SCSI Disk Recovery Tool)-wizard version. With the easy-to-use feature, the

end users can repair SCSI firmware at the professional level.

1.1 Product Features

 SRT FOR SEAGATE SCSI HDD is focusing on repairing Seagate SCSI drives

 SRT FOR SEAGATE SCSI HDD can change setting parameters

 SRT FOR SEAGATE SCSI HDD supports SCSI interface (50/68/80pin)

1.2 Product Application

SCSI stands for Small Computer System Interface (pronounced scuzzy), is a set of standards for physically

connecting and transferring data between computers and peripheral devices, such as hard drive, floppy drive,

CD-ROM, printer, scanner, etc. The SCSI standards define commands, protocols, and electrical and optical

interfaces. SCSI is most commonly used for hard drives and tape drives.

According to different standard, the SCSI standards consist of four versions: SCSI-1, SCSI-2, SCSI-3 and SAS.

SCSI-1

SCSI-1 belongs to original SCSI and it is obsolete so far, SCSI-1 features an 8-bit parallel bus with a 40 MBps (5

MB/s) transfer rate.

SCSI-2

SCSI-2 is an improved version of SCSI-1. SCSI-2 is based on CCS which is a minimum set of 18 basic commands

included, which can be running on all hardware platforms. By the support of Fast SCSI and Wide SCSI, the

transfer rate of SCSI-2 has increased on the basis of SCSI-1. A feature called command queuing gave the SCSI

device the ability to execute command in an order that would be most efficient. Fast SCSI delivers a 10 MB/s

transfer rate. It doubles to 20 MB/s (called Fast-Wide SCSI) when combined with 16 bit bus.

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Seagate ST39251LC Uživatelský manuál Strana 5