Seagate ST39251LC Uživatelský manuál Strana 7

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SPI
Ultra2
SCSI-3
SPI-2
8
8 bits
40 MBps
Ultra2/Wide
SCSI-3
SPI-2
16
16 bits
80 MBps
Ultra3
SCSI-3
SPI-3
16
16 bits
160 MBps
Ultra320
SCSI-3
SPI-4
16
16 bits
320 MBps
SAS
Serial Attached SCSI (SAS) as a new storage interface is evolved from the Parallel SCSI physical storage interface,
which is developed by ANSI INCITS T10 Technical Committee. Compared to parallel connection, SAS offers much
faster communication and easier configuration. In addition, SAS provides device compatibility to SATA and uses
similar cabling. Note: SAS backplane connectors can accept SATA drives, SATA backplane connectors will NOT
accept SAS drives.
SAS adopts a point-to-point connection and allows multiple ports to be aggregated into a single controller,
either built on the mother board or as an add-on. Every SAS interface can support 128 components or
extensions and this technology is built upon robust and tested parallel SCSI communication technology. Cable
installation can be easily realized without daisy-chaining adopted within a computer system because of point-to-
point method.
The first-generation SAS provides 1.5 Gb/s (150 MB/s) transfer rate for each drive within an array
The second-generation SAS provides 3.0 Gb/s (300 MB/s) transfer rate for each drive within an array
The third-generation SAS provides 6.0 Gb/s (600 MB/s) transfer rate for each drive within an array
Based on Seagate SCSI drives with various standard interfaces, SRT FOR SEAGATE SCSI HDD may adopt
corresponding internal mechanism to perform repairing.
SRT FOR SEAGATE SCSI HDD-Wizard Version
This utility is specially designed to repair Model Available, No Capacity, Self Test Reports Error, LLF not
Completed, Disk Parameters Loss, etc. "One Click Repair" function we designed using factory instructions is
much safer and faster than Module Reset to repair SCSI drives. The faults like Self-Test sound available, no
clicking sound, Media Error or Start Unit Request Failed which is reported by SCSI card will lead to Model
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