![]() It is the double bandwidth that is the most prominent and called-for innovation, though. The new SAS 2.0 standard has brought about some other innovations including reduced EMI, an increased maximum length of cables (from 6 to 10 meters) with reduced crosstalk, and a revised topology of complex configurations. This time around, the SAS interface has improved its bandwidth from 3Gbps to 6Gbps. Anyway, it is time for yet another change. Disk racks with SCSI 320 interface are not any kind of museum rarity even today. It is easy to come up with an example: while desktop HDDs quickly transitioned from the parallel to serial interface (from PATA to SATA), the similar transition from SCSI to SAS has taken a long while. Most consumers in this market follow the principle of making haste slowly. For a business, any failure or downtime, however small they may be, can provoke a financial loss. The corporate sector, which is the main consumer of such serious products as RAID controllers, is highly conservative.
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