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CT1087 — IBM SAS 6Gb 3-Port PCIe2 x8 1.5GB Cache RAID Adapter

✓ Government record, cited
— · CONTROLLER · RAID_CACHE
PRODUCT OVERVIEW

CT1087: IBM SAS 6Gb 3-Port PCIe2 x8 1.5GB Cache RAID Adapter.

The the manufacturer CT1087 is a Battery-Backed Write Cache pack, designed for enterprise RAID controllers in enterprise servers. It provides backup power to the BBWC module during unexpected power loss, ensuring cached write data is safely committed to flash memory. This is a high-volume replacement part in TPM market as enterprise servers remain widely deployed.

This part is cataloged in the U.S. Government catalog under NSN 3110-00-158-6190, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
CONTROLLER→ RAID_CACHE→ CT1087
NSN: 3110-00-158-6190
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 80040 — L AND S BEARING CO INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY RETAINER
alignment_typeRIGID
overall_height0.8070 INCHES NOMINAL IN
surface_finishGROUND
special_featuresBRONZE FERRULE ON ID OF ONE WASHER,WASHERS OVERLAP
style_designatorCLUTCH RELEASE, THRUST, LUBRICATED AND SEALED
bore_smallest_diameter2.0625 INCHES MINIMUM AND 2.0635 INCHES MAXIMUM IN
overall_outside_diameter3.4850 INCHES MINIMUM AND 3.5150 INCHES MAXIMUM IN
thrust_directional_capability_designationSINGLE
NSN3110-00-158-6190
COMPONENT DIAGRAM
CAP 72V + - CAP 72V BRACKET TO CTRL CABLE: — ~76 mm CACHE BACKUP | Supercapacitor | Cable: — Connects to RAID controller | | Controller: See controller spec SCHEMATIC: + - 2S2P SUPERCAP PACK TITLE CACHE BATT PN CT1087 MFR OEM IBM SAS 6Gb 3-Port PCIe2 x8 1.5GB Cache
KEY FEATURES
•
Battery-Backed Write Cache Module
•
Rechargeable Battery Technology
Provides cache backup power for 48+ hours after power loss
•
Hot-Plug Capable
TYPICAL APPLICATIONS
  • Hardware RAID acceleration for enterprise storage
  • Data protection and parity management
  • Cache-backed write acceleration
  • Storage tiering and SSD caching
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.8070 INCHES NOMINAL IN
SURFACE FINISHGROUND
STYLE DESIGNATORCLUTCH RELEASE, THRUST, LUBRICATED AND SEALED
THRUST DIRECTIONAL CAPABILITY DESIGNATIONSINGLE
OVERALL OUTSIDE DIAMETER3.4850 INCHES MINIMUM AND 3.5150 INCHES MAXIMUM IN
BORE SMALLEST DIAMETER2.0625 INCHES MINIMUM AND 2.0635 INCHES MAXIMUM IN
ALIGNMENT TYPERIGID
SPECIAL FEATURESBRONZE FERRULE ON ID OF ONE WASHER,WASHERS OVERLAP
MATERIALCOPPER ALLOY RETAINER
SUBSTITUTES & CROSS-REFERENCES 9
109Reference document
Same NSN cross-reference
Reference document — Secondary reference
C0T27580AReference document
Same NSN cross-reference
Reference document — Secondary reference
78-7580Reference document
Same NSN cross-reference
Reference document — Secondary reference
78-758Reference document
Same NSN cross-reference
Reference document — Secondary reference
P129Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
A2256-14Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is CT1087?
CT1087 is a IBM SAS 6Gb 3-Port PCIe2 x8 1.5GB Cache RAID Adapter. It is classified as a CONTROLLER (RAID_CACHE).
What parts can replace CT1087?
There are 9 known substitutes for CT1087: 109, C0T27580A, 78-7580 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for CT1087?
CT1087 is cataloged in the U.S. Government catalog under NSN 3110-00-158-6190. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.