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Silver 3.5 inch SAS hard drive mounted in black caddy tray

DELL

DELL ST3146855SS 146GB 15000RPM 3.5" SAS internal hard drive

SKU CH-3PZV-THXBN

A 146 GB, 15000 RPM enterprise SAS drive with 16 MB cache, hot-swap tray and 3.5-inch form factor

  • 146 GB capacity stores critical enterprise data
  • 15000 RPM spindle delivers fast transactional throughput
  • 5-inch SAS 3 Gb/s interface connects to compatible PowerEdge servers
  • 16 MB cache accelerates frequent read operations
  • Hot-swap tray enables drive replacement without system downtime

Dell Cheetah 15K.5 SAS drive

This 146GB 3.5-inch internal hard drive spins at 15000RPM and connects through a SAS 3Gb/s interface. It ships new with a black caddy tray included. The unit is built for Dell PowerEdge servers and compatible desktop workstations.

Suits enterprise arrays needing hot-swap

The drive supports hot-swap replacement so a failed unit can be changed without shutting down the system. A 16MB buffer helps with rapid record access. It is not for buyers who need more storage capacity or whose hardware lacks a SAS 3Gb/s backplane.

15000RPM rotational speed

This spindle speed is the single specification that determines whether the drive meets the performance profile for high-transaction workloads. Verify that your controller and chassis accept 3.5-inch SAS drives before purchasing.

Punti di forza

  • 146 GB capacity stores critical enterprise data
  • 15000 RPM spindle delivers fast transactional throughput
  • 5-inch SAS 3 Gb/s interface connects to compatible PowerEdge servers
  • 16 MB cache accelerates frequent read operations
  • Hot-swap tray enables drive replacement without system downtime

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Is the 146GB 15000RPM SAS drive the right capacity for a Dell PowerEdge 2950?

The 146GB capacity matches the original specification for the PowerEdge 2950 and the 15000RPM spindle delivers the IOPS that model expects.

What does 15000RPM actually deliver in a live server?

The 15000RPM spindle cuts average latency to roughly 2 ms, so random read/write queues clear faster on the 3Gbps SAS link.

How does the 3Gbps SAS interface limit real-world throughput?

The 3Gbps SAS link caps sustained transfers at about 300 MB/s, so the 16MB cache cannot push sequential speeds beyond that ceiling.

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