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Seagate Cheetah 15K.4 3.5 inch SAS hard drive bare drive

Seagate

Seagate ST3146854SS Cheetah 15K.4 147GB 15000 RPM SAS 3.5" internal hard drive

SKU CH-4GXY-NWN2S MPN ST3146854SS

A 147 GB SAS hard drive spinning at 15000 RPM with 8 MB cache and 3.5 ms average seek time for high-speed enterprise storage

  • PackagingBare Drive
  • InterfaceSerial Attached SCSI (SAS)
  • Capacity147GB
  • RPM15000 RPM
  • Cache8MB
  • Average Seek Time3.5ms
  • 15000 RPM spindle for rapid data access
  • SAS interface provides 3Gb/s transfer rate
  • 147GB capacity fits enterprise workloads
  • 5ms average seek time speeds read operations
  • Low power consumption reduces operating costs

Enterprise 15K SAS Drive

The Seagate Cheetah 15K.4 ST3146854SS is a 3.5 inch internal hard drive built for enterprise servers and storage arrays. It delivers 147GB of capacity on a Serial Attached SCSI interface spinning at 15000 RPM with an 8MB cache. The bare-drive unit is supplied new and carries the manufacturer's highest reliability rating.

Suited for High-IOPS Workloads

This drive suits administrators who need low latency and high transaction rates for databases, email servers or tiered storage pools. The 3.5ms average seek time and 2ms average latency support consistent random I/O performance. It is not for buyers who need larger capacities or solid-state endurance for write-intensive logging.

15000 RPM Spindle Speed

The 15000 RPM spindle speed is the single specification that determines whether this drive meets the performance window of the target application. It enables the 3Gb/s SAS transfer rate and the sub-4ms access times that define the 15K.4 class. Verify that the host backplane and controller support 3Gb/s SAS before purchase.

Points forts

  • 15000 RPM spindle for rapid data access
  • SAS interface provides 3Gb/s transfer rate
  • 147GB capacity fits enterprise workloads
  • 5ms average seek time speeds read operations
  • Low power consumption reduces operating costs

Caractéristiques

BrandSeagate
SeriesCheetah 15K.4
ModelST3146854SS
PackagingBare Drive
InterfaceSerial Attached SCSI (SAS)
Capacity147GB
RPM15000 RPM
Cache8MB
Average Seek Time3.5ms
Average Write Time4.0ms
Average Latency2ms
FeaturesHighest reliability rating in the industry
Low power consumption
Form Factor3.5"
Poids d’expédition0.91 kg
Dimensions du colis127 × 127 × 127 mm

Questions sur cet article

How do I choose between the 146 GB and 147 GB capacity listings?

Both figures describe the same drive; 146 GB is the formatted capacity and 147 GB is the unformatted label used by Seagate.

What does the 15 000 RPM speed mean for actual system responsiveness?

The spindle rotates at 15 000 RPM, giving an average seek time of 3.5 ms and average latency of 2 ms for faster random access.

What does the SAS 3 Gb/s interface limit in practice?

The Serial Attached SCSI link caps the maximum external transfer rate at 3 Gb/s, which is the ceiling for sustained sequential throughput.

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