HPE DL385 G11 8LFF Oroc X1 Sas/sata CBL - P57870-B21

HPE P57870-B21 ProLiant DL385 Gen11 8LFF SAS/SATA Drive Bay Cable

Overview

The HPE P57870-B21 is a factory-matched SAS/SATA interconnect cable designed specifically for the HPE ProLiant DL385 Gen11 server platform. If you're configuring or expanding an 8 Large Form Factor (8LFF) drive bay chassis and the original cable is missing, damaged, or you're adding a secondary expander, this is the part to order — not a generic substitute. Using the correct OEM cable eliminates signal integrity guesswork and keeps your storage subsystem within HPE's supported configuration envelope.

The P57870-B21 (often searched as P57870 B21) supports both SAS and SATA interface signaling, making it compatible with the full range of drive types you'd typically populate in a DL385 Gen11: SAS HDDs, SATA HDDs, and SATA SSDs. That dual-protocol support matters in mixed-drive configurations where a single cable routes to bays housing different drive classes.

Key Features

• SAS and SATA dual-interface: a single cable handles both SAS and SATA signal protocols, so you're not limited to one drive class per backplane segment — relevant in hybrid storage builds combining SAS HDDs with SATA SSDs in the same 8LFF chassis.
• Platform-specific fit for DL385 Gen11 8LFF: routed and keyed for this chassis geometry, which means no improvised cable management or length mismatches that can obstruct airflow or strain connectors in a dense 2U enclosure.
• 0.47 lb shipping weight: lightweight interconnect — ships quickly and won't add meaningful rack weight, but verify the part number against your chassis bill of materials before ordering to confirm it matches your specific backplane configuration.

Integration & Compatibility

The P57870-B21 is positioned within the HPE server storage accessory catalog under UNSPSC code 43211600 (computer storage device components). It is sourced factory-new from distribution and is intended for use in HPE ProLiant DL385 Gen11 configurations with the 8LFF drive bay option. Confirm your chassis option kit against HPE's QuickSpecs for the DL385 Gen11 before ordering — the Gen11 platform supports multiple LFF/SFF backplane configurations, and cable routing differs between them.

For integrators building out HPE server infrastructure, pairing this cable with the correct server storage accessories and HPE-qualified drives ensures the storage subsystem remains within a supported, warranty-intact configuration. See HPE's storage networking accessories for complementary components.

Frequently Asked Questions

Q: What server platform is the HPE P57870-B21 cable designed for?

A: The P57870-B21 is designed for the HPE ProLiant DL385 Gen11 server in the 8 Large Form Factor (8LFF) drive bay configuration.

Q: Does the P57870-B21 support both SAS and SATA drives?

A: Yes. The P57870-B21 supports both SAS and SATA interface signaling, making it compatible with SAS HDDs, SATA HDDs, and SATA SSDs in a mixed-drive configuration.

Q: What is the weight of the P57870-B21?

A: The P57870-B21 weighs 0.47 lb.

Q: Where is the HPE P57870-B21 manufactured?

A: The P57870-B21 is manufactured in China (CN).

Eden Phillips

The P57870-B21 is a platform-specific SAS/SATA cable — the kind of part that's easy to overlook until a DL385 Gen11 8LFF build stalls because the original is damaged or simply wasn't included in a secondary expander kit. Its dual SAS/SATA interface support is the practical detail that matters: in Gen11 8LFF deployments where operators mix SAS HDDs and SATA SSDs across the same backplane, a single cable handles both signal types without requiring separate routing.

Technical Highlights:

• Dual SAS/SATA signaling: one cable supports both protocol types — relevant in 8LFF configurations mixing SAS spinning media with SATA solid-state drives in the same chassis.
• Platform-matched geometry: designed for the DL385 Gen11 8LFF chassis specifically, so connector placement and cable length align with HPE's validated routing without improvisation.
• 0.47 lb weight: lightweight enough that shipping and handling are straightforward, but the physical form factor (length, connector type) must match your specific backplane option — verify against HPE QuickSpecs before ordering.

Deployment Considerations:

• The DL385 Gen11 supports multiple drive bay configurations (8LFF, 12LFF, SFF variants) with different cable kits — confirm the 8LFF option code on your chassis before ordering to avoid a mismatch.
• Evidence is limited to interface type and weight; HPE QuickSpecs for the DL385 Gen11 should be the authoritative reference for backplane connector pinout and maximum drive counts per cable segment.

Best fit: a DL385 Gen11 8LFF server in a storage-dense deployment — NVR backend, surveillance archive, or HPC scratch storage — where you need a replacement or supplemental SAS/SATA cable that stays within HPE's supported configuration without introducing a third-party variable.