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Bare 3.5 inch SCSI hard drive silver metal casing

HP

HP 347708-B22 147GB 15000 RPM Ultra320 SCSI 3.5" internal hard drive

SKU CH-H6S1-EF3M6 MPN 347708-B22

A 147 GB, 15 000 RPM Ultra320 SCSI drive with a 3.8 ms seek time for server workloads

  • Total capacity147 GB
  • Interface typeUltra320 SCSI
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed15,000 RPM
  • Average seek time3.8 ms
  • 15,000 RPM spindle accelerates transaction-heavy workloads
  • Ultra320 SCSI interface delivers 320 MB/s throughput for server arrays
  • 8 ms average seek cuts latency in database operations
  • 147 GB capacity fits mission-critical datasets in 3.5" form factor
  • HP qualification process reduces firmware incompatibility and data-corruption risk

Server storage drive

The HP 347708-B22 is a 147GB 3.5-inch internal hard drive spinning at 15000 RPM over an Ultra320 SCSI interface. It is built for servers that demand high transaction throughput and low latency. The bare drive ships without a tray and carries a one-year limited warranty.

Compatibility check

Verify that your motherboard or controller supports the Ultra320 SCSI interface and an 80-pin connector before ordering. Some motherboards are not compatible with this SCSI interface. The 3.5-inch form factor requires a matching drive bay.

Upgrade path

This drive replaces slower SCSI disks in existing Ultra320 environments where 15000 RPM and 3.8ms average seek time improve I/O response. The capacity jump from 146.8GB to 147GB is minimal, so the upgrade is worth it only when spindle speed and seek performance are the primary bottlenecks.

How it compares

Measured against everything we stock in 3.5-Inch Internal Desktop HDDs, at today’s prices. Recalculated every night.

Price $59.99
Cheaper than about 70% of the 4,938 comparable items (median $107.99).
Total capacity 147 GB
Lower than about 94% of the 2,372 comparable items (median 2 TB).
Price per TB $408.10 per TB
Pricier than about 89% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameHP
Model name347708-B22
Total capacity147 GB
Recommended useIdeal for Servers
Performance
Rotational speed15,000 RPM
Average seek time3.8 ms
Ports & slots
Interface typeUltra320 SCSI
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight2.27 kg
Package size203 × 152 × 51 mm

Questions about this item

Does the bare drive include a tray or cables, or must they be purchased separately?

The unit is supplied as a bare drive only; the 80-pin SCA connector attaches directly to a hot-plug backplane, so no separate cables are needed, but a 3.5-inch carrier tray is required if your chassis does not already provide one.

Should I choose the 147 GB 15000 RPM Ultra320 SCSI model or a lower-speed alternative?

Select this 147 GB 15000 RPM Ultra320 SCSI drive when the server workload demands the highest sustained throughput and the lowest 3.8 ms average seek time; a slower spindle would reduce both random and sequential performance.

What does the 320 MB/s Ultra320 SCSI rating mean once the drive is installed in a server?

The 320 MB/s figure is the peak bus transfer rate; real-world throughput will be lower and depends on the SCSI controller, cable length, and the number of devices sharing the bus, but the 15000 RPM spindle and 3.8 ms seek keep the drive itself from becoming the bottleneck.

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