Compaq 295158-001 IBM DCHS04Y 4.3GB 3.5" Wide Ultra SCSI Hard Drive 80-Pin

Compaq 295158-001 IBM DCHS04Y 4.3GB 3.5" Wide Ultra SCSI Hard Drive 80-Pin

This is a Compaq 295158-001 / IBM DCHS04Y 4.3GB Wide Ultra SCSI hard drive in a 3.5" form factor with an 80-pin SCA connector. It is a rebranded IBM DCHS-series drive manufactured for Compaq server platforms. The drive carries both the Compaq part number 295158-001 and the IBM part number 27H1683, and was manufactured in November 1997.

Specifications & What's Included

• Compaq Part Number: 295158-001
• IBM Part Number: 27H1683
• Drive Model: DCHS04Y
• Capacity: 4.3 GB
• Interface: Wide Ultra SCSI
• Connector: 80-Pin SCA
• Form Factor: 3.5"
• Manufacture Date: 11 November 1997
• Firmware Revision: FR5555
• Controller Chipset: Adaptec (visible on PCB)
• Jumper block on rear for SCSI ID and configuration settings (BIT 3/2/1/0, KEY, SPIN UP, EN NARROW, SP SYNC, LED, WR PROT, DLY START)
• Drive only — no cables, brackets, or trays Ultra SCSI hard drives of this generation were the storage standard for enterprise servers and workstations throughout the late 1990s. The IBM DCHS series was widely deployed in Compaq ProLiant rack and tower servers, as well as compatible IBM Netfinity and similar midrange server platforms. Wide Ultra SCSI (also referred to as Ultra SCSI-3 or Fast-20 Wide SCSI) doubled the bus width to 16 bits compared to standard SCSI, enabling higher throughput and support for up to 15 devices per channel — making it a staple of multi-drive server configurations of the era. The 80-pin SCA (Single Connector Attachment) interface integrates power and data into one connector, streamlining hot-swap backplane installations in server chassis of the period. These drives remain in demand for maintaining legacy Compaq ProLiant servers, RAID arrays, and workstations that require period-correct Wide Ultra SCSI storage and cannot accept newer SATA or SAS replacements.
  Condition: Used
  This Compaq 295158-001 IBM DCHS04Y 4.3GB Wide Ultra SCSI hard drive has been inspected, cleaned, and tested at our facility and is in very good condition. The drive powers up and functions normally. The case and label are intact with light wear consistent with prior server use. The 80-pin SCA connector shows no damage. Please view our photo set and contact us if you have any questions. Please note: We have multiple units in stock — yours may not be the one shown in the photos, however, it will be similar in condition and function. Visit Our Store

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