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Seagate 3.5 inch SCSI hard drive with caddy tray

Seagate

Seagate ST318452LC 18GB 15000RPM Ultra160 3.5" SCSI internal hard drive

SKU CH-WW2C-NMWQP

An 18 GB 3.5-inch SCSI hard drive spinning at 15000 RPM with an Ultra160 interface and a 3.906 MB buffer, supplied new with a caddy

  • 18 GB capacity stores operating system and critical data
  • 15 000 RPM spindle speed accelerates read and write operations
  • Ultra160 SCSI interface delivers up to 160 MB/s throughput
  • 906 MB cache buffers bursts for smoother performance
  • Includes caddy for direct 3.5" bay installation

18 GB Ultra160 SCSI drive

This 18 GB internal hard drive uses a 3.5 inch SCSI Ultra160 interface and spins at 15000 RPM. It is suited to legacy servers or workstations that require a narrow SCSI bus connection. The unit ships new and includes a mounting caddy for direct installation in compatible drive bays.

Thermals and power in daily use

A 15000 RPM spindle typically produces more heat and audible seek noise than slower desktop drives, so adequate chassis airflow is expected. Power draw will reflect the high rotational speed and the SCSI bus signalling, but exact wattage figures are not supplied. The 3.906 MB buffer helps sustain burst transfers without increasing thermal load.

Build quality and connector implications

The drive is branded IBM and carries the ST318452LC model number, indicating enterprise-grade construction for continuous operation. Its 68-pin Ultra160 connector requires a matching backplane or cable; adapters for narrower SCSI standards are not included. The supplied caddy secures the drive in standard 3.5 inch hot-swap or fixed bays, simplifying replacement in supported enclosures.

Helstu kostir

  • 18 GB capacity stores operating system and critical data
  • 15 000 RPM spindle speed accelerates read and write operations
  • Ultra160 SCSI interface delivers up to 160 MB/s throughput
  • 906 MB cache buffers bursts for smoother performance
  • Includes caddy for direct 3.5" bay installation

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How do I install the ST318452LC drive and what is the step people often miss?

Mount the 3.5-inch drive in the supplied caddy, connect the 68-pin Ultra160 SCSI cable and set a unique SCSI ID between 0 and 15 using the jumpers; the step most often missed is terminating the last device on the bus.

What maintenance or replacement will the ST318452LC need later?

The 15000 RPM mechanism and 3.906 MB buffer are sealed; no user-serviceable parts exist, so the only future action is replacing the entire drive if it fails.

What limit appears first on the ST318452LC during sustained use?

The Ultra160 interface caps sustained throughput at 160 MB/s, which the 15000 RPM platters can saturate during long sequential transfers.

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