Pcie (Nvme) Support - Broadcom 96 Series User Manual

Broadcom 96xx User Guide

PCIe (NVMe) Support

The following table shows how many NVMe drives or Broadcom PEX88000-series switches can directly attach to each
adapter. The 9600W-16e adapter, 9600-16e adapter, and 9600-8i8e adapter (external ports) do not support direct attach
to NVMe drives. The expected topology for these adapters is a typical JBOF scenario that uses a switch to connect the
NVMe drives.
NOTE
Connected NVMe drives must support end-to-end CRC (ECRC).
Table 4: NVMe Device or PCIe Switch Direct-Attach Options Supported for Each Adapter
Adapter x4 NVMe Drives
9670W-16i
9670-24i
9660-16i
9620-16i
9600-24i
9600-16i
a
9600-8i8e
9600W-16e
9600-16e
The adapter phys are grouped into two CSWs: CSW1[0:15] and CSW0[0:15]. Depending on the adapter, 8 or 16 of these
phys are used consecutively for the PCIe host interface and the remaining tri-mode phys are available for connection to
any supported SAS, SATA, or PCIe (NVMe) storage devices. The following tables indicate supported topologies. Typical
backplane designs naturally align to these topology rules, but you must take care not to design anything atypical that
might interfere with the adapter's operation.
Table 5: 9670W-16i Adapter PCIe Topology Configuration Combinations
0 1 2
x4
x4
x2 x2
x4
a. Only internal internal ports support direct-attach NVMe drives.
Broadcom
x2 NVMe Drives
4 8
6 12
4 8
4 8
6 12
4 8
2 4
0 0
0 0
Connector 0
CSW1[0:7]
3 4 5
x8
x8
x4
x8
x4
x2
x8
x4
®
Broadcom 96xx PCIe 4.0, 24G SAS MegaRAID
x1 NVMe Drives
16
24
16
16
24
16
8
0
0
6 7 8 9
x16
x2
x2
x2 x2
x1 x1
x1 x1
™
and eHBA Tri-Mode Storage Adapters
x16 Switch x8 Switches
1 2
1 3
0 2
0 2
0 3
0 2
0 2
1 2
1 2
Connector 1
CSW1[8:15]
10 11 12
x8
x4
x4
x2
x2
x2
x1 x1 x1
x1 x1 x1
x4 Switches
4
6
4
2
6
4
4
4
4
13 14 15
x4
x4
x2 x2
x2 x2
x2 x2
x1 x1 x1
x1 x1 x1
96xx-MR-HBA-Tri-Mode-UG108
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