Broadcom 95 Series User Manual

Broadcom 95xx User Guide Broadcom
®
95xx PCIe 4.0 MegaRAID
®
and HBA Tri-Mode Storage Adapters
PCIe (NVMe) Support
The following table shows how many NVMe drives or Broadcom PEX88000-series switches can directly attach to each
adapter. The HBA 9500-16e and HBA 9500-8e adapters do not support direct attach to NVMe drives. The expected
topology for the HBA 9500-16e and HBA 9500-8e adapters is a typical JBOF scenario that uses a switch to connect the
NVMe drives.
The adapters do not support switch connections wider than x4 and one level deep.
Table 4: NVMe Devices or PCIe Switch Direct-Attach Options Supported for Each Adapter
Adapter x4 NVMe Drives x2 NVMe Drives x1 NVMe Drives x4 Switch
9560-16i 4 8 16 4
9560-8i 2 4 8 2
9580-8i8e 2 4 8 4
9500-16i 4 8 16 4
9500-8i 2 4 8 2
9500-16e 0 0 0 4
9500-8e 0 0 0 2
The tri-mode device interface contains a SAS core and a PCIe device bridge (PDB). The PDB enables the PCIe (NVMe)
storage interface connections, and each PDB can support direct connect to NVMe devices or to x4 PCIe switches. The
storage interface is comprised of 16 phys or 8 phys depending on the controller. One PDB manages PHY 0 to PHY 7,
and a second PDB manages PHY 8 to PHY 15. The PDBs cannot communicate with each other. This means that a PCIe
port of greater than one lane must attach exclusively to phys all managed by the same PDB and must be comprised of
adjacent lanes.
The following table indicates how the connectors map to the PDB for each adapter. Card layout figures in Broadcom
MegaRAID and HBA Tri-Mode Storage Adapter Characteristics show the connector designations for each adapter.
Table 5: Adapter Lanes-to-PDB Core Associations
Adapter Connector 0 Connector 1 Connector 2 Connector 3
9560-16i PDB 0 PDB 1 N/A N/A
9560-8i PDB 0 N/A N/A N/A
9580-8i8e PDB 1 PDB 0 PDB 0 N/A
9500-16i PDB 0 PDB 1 N/A N/A
9500-8i PDB 0 N/A N/A N/A
9500-16e PDB 0 PDB 0 PDB 1 PDB 1
9500-8e PDB 0 PDB 0 N/A N/A
Common REFCLK Support
The adapter uses x8 SFF-8654 (SlimSAS) connectors. Each connector is divided into two quadrants. For connections that
require a common REFCLK, one REFCLK is supplied for each quadrant. For x4 NVMe or PCIe switch connections, the
REFCLK sourced by each quadrant directly clocks each attached x4 PCIe connection.
Broadcom 95xx-MR-HBA-Tri-Mode-UG104
11

Broadcom 95 Series Specifications

General

Brand	Broadcom
Model	95 Series
Category	PCI Card
Language	English