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Seagate plans to roll out 2.5" HDD with Serial Attached SCSI

Seagate Technology is planning to introduce this week 2.5" HDD with Serial Attached SCSI (SAS), aimed at the corporate market. As they say at CNET, the disk will be demonstrated at HP World Conference and Expo in Atlanta. Hard-drive maker said it plans to make the SAS drive available to customers next year.

Seagate´s forthcoming 2.5-inch enterprise drive is notable for its small overall size. For years, drives for desktops and servers have been 4 inches wide. Seagate said its new drive is about 70 percent smaller than the conventional drive size. Drives in desktops typically hold platters that are 3.5 inches in diameter, but the platters in high-performing drives for servers are smaller. Drives that run at 10,000 revolutions per minute (rpm) hold platters 3 inches in diameter, while those spinning at 15,000rpm hold platters 2.5 inches in diameter.

Another benefit of the disk is interface — while a typical storage array with parallel SCSI may have 14 drives, an array with SAS could combine between 24 and 30 drives in one box.

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