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title
pointSATA HDD V.S SAS HDD
Two new serial interfaces to disk drives are replacing two venerable parallel interfaces. The Advanced Technology Attachment (IDE/ATA) interface will be succeeded by Serial ATA (SATA), and the Small Computer System Interface (SCSI) will be replaced by Serial Attached SCSI (SAS). These new point-to-point technologies provide greater dedicated bandwidth and smaller connectors, and SAS technology supports both SAS and SATA disk drives. The one-two punch of the SAS/SATA value proposition is simple: SAS hard drives deliver the speed, reliability and scalability demanded in high-availability enterprise environments, while high-capacity SATA drives are ideal for bulk storage applications, combining low cost per GB and greater reliability and scalability than their parallel ATA ancestors. Complementary by design, SAS boasts the best performance/dollar while SATA offers maximum capacity/dollar.
 
SATA HDD
SATA II HDD
SAS HDD
Logo
SATA_logo
SATAII_logo
SAS_logo
Internal Cable Connector
sata_sas_internal_connector
sata_sas_internal_connector
sata_sas_internal_connector
Form Factor
3.5" or 2.5"
3.5" or 2.5"
3.5" or 2.5"
Single Disk Capacity
250GB
1.5TB
300GB
Speed
1.5G/s
3.0G/s
3.0G/s
RPM
7.2K rpm
7.2K rpm
10K/15K rpm
Memory cache
16 MB
32 MB
16 MB

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