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Silver 3.5 inch SCSI hard drive bare unit with 80 pin connector

Seagate

Seagate Cheetah 15K.4 ST336754LC 36.7GB 15000 RPM 8MB SCSI Ultra320 80pin 3.5" internal hard drive

SKU CH-48J5-JZV3J MPN ST336754LC

36.7GB 15000 RPM SCSI Ultra320 80-pin 3.5" drive with 8MB cache and 3.5ms seek time for high-reliability server storage

  • Total capacity36.7 GB
  • Interface typeSCSI Ultra320 80pin
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed15,000 RPM
  • Cache memory8 MB
  • 15,000 RPM spindle speed cuts latency to 2 ms
  • 5 ms average seek accelerates random I/O
  • 8 MB cache buffers burst transfers
  • Ultra320 SCSI 80-pin interface delivers 320 MB/s bandwidth
  • 7 GB capacity in 1.0-inch low-profile form factor

Product Identity

The Seagate Cheetah 15K.4 ST336754LC is a 36.7GB 3.5-inch internal hard drive spinning at 15000 RPM with an 8MB cache. It uses a SCSI Ultra320 80-pin interface and is supplied as a bare drive. This unit targets legacy servers or workstations that require a high-speed SCSI storage device.

Fit and Exclusions

The drive suits administrators maintaining older SCSI-based arrays or replacing a failed unit in a compatible hot-plug backplane. Buyers whose systems lack an Ultra320 SCSI controller or an 80-pin backplane connector cannot install this drive. The low-profile 1.0-inch height also demands a matching drive bay.

Deciding Specification

The SCSI Ultra320 80-pin interface is the single specification that determines compatibility. Without a matching controller and backplane, the drive will not function regardless of its 15000 RPM speed or 3.5ms average seek time. Verify the host interface before purchase.

How it compares

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

Price $134.99
Pricier than about 56% of the 4,938 comparable items (median $107.99).
Total capacity 36.7 GB
Lower than about 99% of the 2,372 comparable items (median 2 TB).
Price per TB $3,678.20 per TB
Pricier than about 92% of the 2,365 comparable items (median $62.21 per TB).

New to this? Paying with USDT: TRC-20 or ERC-20 — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameSeagate
Product lineCheetah 15K.4
Model nameST336754LC
Total capacity36.7 GB
Performance
Rotational speed15,000 RPM
Average seek time3.5 ms
Mean write time4.0 ms
Mean latency2 ms
Storage
Cache memory8 MB
Ports & slots
Interface typeSCSI Ultra320 80pin
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight0.68 kg
Package size203 × 152 × 51 mm

Questions about this item

Will the SCSI Ultra320 80pin interface work with my older SCSI controller?

The drive uses an 80pin SCSI Ultra320 interface. Compatibility depends on your controller supporting that pin count and signalling standard; some motherboards are not compatible with this SCSI interface.

How can I verify the 15000 RPM spindle is running correctly after installation?

Listen for the characteristic high-pitched whine of a 15000 RPM motor and check the drive is detected at 36.7GB capacity in the SCSI BIOS or operating system disk utility.

Does the bare drive include mounting screws or a hot-swap tray for the 1.0 inch low-profile form factor?

The bare drive packaging includes only the 3.5 inch drive unit; mounting screws and any hot-swap tray for the 1.0 inch low-profile height must be purchased separately.

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