PCIe adapter placement rules and slot priorities for the 8348-21C

Find information about the placement rules and slot priorities for the Peripheral Component Interconnect (PCI) Express (PCIe) adapters that are supported for the 8348-21C system.

PCIe slot descriptions for the 8348-21C

The 8348-21C system provides PCIe generation 3 slots. Figure 1 shows the rear view of the system with the PCIe adapter slots. Table 1 lists the PCIe adapter slot locations and details for the 8348-21C system.

The half-height, half-length or short (low-profile) adapters can be installed in slots 1, 2, and 4.
The half-height, full-length adapters can be installed only in slot 3.

Figure 1. Rear view of an 8348-21C system with PCIe slots indicated

Table 1. PCIe slot locations and descriptions for the 8348-21C system
Slot	Description	PCI host bridge (PHB)	Adapter size	Coherent Accelerator Processor Interface (CAPI)
1¹	PCIe3 x8	Processor Module 1, S2P17	Half-height, half-length	No
2¹	PCIe3 x8	Processor Module 1, S2P16	Half-height, half-length	No
3	PCIe3 x16	Processor Module 1, PHB0	Half-height, full-length	Yes
4¹	PCIe3 x8	Processor Module 2, PHB2	Half-height, half-length	Yes
¹Slots 1, 2, and 4 are x8 slots. The adapter priority for these slots is for the high-performance adapters followed by any other adapter.

PCIe adapter placement rules

Use this information to select slots for installing PCIe adapters in the 8348-21C system. Table 2 provides information about the adapters, the slot priorities in the system they are supported on, and the maximum number of adapters that can be installed in the supported system. You can click the link that appears in the feature code column for more technical information specific to the PCIe adapter.

Table 2. PCIe adapter slot priorities and maximum adapters supported in the systems
Feature code	Description	8348-21C
Feature code	Description	Slot priorities	Maximum number of adapters supported
5260	PCIe2 LP 4-port 1 GbE Adapter (FC 5260; CCIN 576F); Adapter FRU number: 74Y4064 PCIe1 or PCIe2 x4 Short, low-profile High bandwidth Four-port 1 Gb Ethernet OS support: Red Hat Linux, Ubuntu, and PowerKVM operating systems	4, 3, 2, 1	4
EC3A	PCIe3 LP 2-Port 40 GbE NIC RoCE QSFP+ Adapter (FC EC3A; CCIN 57BD); Adapter FRU number: 00FW105 PCIe3 x8 Short, low-profile Extra-high bandwidth, low latency 40 Gb Ethernet Supports NIC and RoCE services OS support: Red Hat Linux, Ubuntu, and PowerKVM operating systems	4, 3, 2, 1	4
EC3E	PCIe3 LP 2-port 100 Gb EDR IB Adapter x16 (FC EC3E, CCIN 2CEA); Adapter FRU number: 00WT075 PCIe3, x16 Short, low-profile OS support: Linux operating system	3	1
EC3S	PCIe3 SAS/SATA RAID adapter with 16 internal native ports, 12 Gbs, low-profile, short form factor (FC EC3S); Adapter FRU number: 00WV555 PCIe3 x8 Supported RAID levels: 0, 1, 1E, 5, 6, 10, 50, 60 and Hybrid RAID 1 and 10 Cache memory = 1024 MB OS support: Red Hat Linux, Ubuntu, and PowerKVM operating systems	4¹	1¹
EC3T	PCIe3 LP 1-port 100 Gb EDR IB Adapter x16 (FC EC3T; CCIN 2CEB); Adapter FRU number: 00WT013 PCIe generation 3, x16 Short, low-profile OS support: Linux operating system	3	1
EC3Y	PCIe3 x8, LP adapter, SAS/SATA/RAID controller (FC EC3Y); Adapter FRU number: 00WV553 PCIe3 x8 Short, low-profile Supported RAID levels: 0, 1, 1E, 10, and Hybrid RAID 1 and 10 Volatile cache memory = 256 MB OS support: Red Hat Linux, Ubuntu, and PowerKVM operating systems	4	1
EJ1B	CAPI Compression Accelerator Adapter (FC EJ1A and EJ1B; CCIN 2CF0); Adapter FRU number: 00WT173 PCIe3 x8 Short, with full-height tailstock (FC EJ1A) Short, low-profile (FC EJ1B) Up to 2 GB/sec compression and decompression throughput CPU offload and CAPI interface with negligible software load OS support: Linux operating systems	3, 4	1
EL2N	PCIe 8 Gb Dual-port Fibre Channel Adapter (FC EL2N; CCIN 577D); Adapter FRU number: 10N9824 PCIe x8 Short, low-profile OS support: Red Hat Linux, Ubuntu, and PowerKVM operating systems	4, 3, 2, 1	4
EL3Z	PCIe2 LP 2-port 10 GbE BaseT RJ45 Adapter (FC EL3Z; CCIN 2CC4); Adapter FRU number: 00E2714; Full-height tailstock part number: 00E2862; Low-profile tailstock part number: 00E2721 PCIe2 x8 Short, low-profile Two 10 Gb RJ45 ports Local area network (LAN) adapter OS support: Red Hat Linux, Ubuntu, and PowerKVM operating systems	4, 3, 2, 1	4
EL43	PCIe3 LP 16 Gb 2-port Fibre Channel Adapter (FC EL43; CCIN 577F); Adapter FRU number: 00E3496 PCIe3 x8 Short, low-profile Extra-high bandwidth OS support: Red Hat Enterprise Linux, SUSE Linux Enterprise Server, Linux Ubuntu operating system, and PowerKVM	3, 2, 1, 4	3
EN0T	PCIe2 LP 4-port (10 Gb + 1 GbE) SR+RJ45 Adapter (FC EN0T; CCIN 2CC3); Adapter FRU number: 00E2715; Low-profile tailstock (PN): 00E2720 PCIe2 x8 Short, low-profile Two 10 Gb SR optical ports and two 1 Gb RJ45 ports NIC network convergence adapter Local area network (LAN) adapter OS support: Red Hat Linux, Ubuntu, and PowerKVM operating systems	4, 3, 2	3²
EN0V	PCIe2 LP 4-port (10 Gb + 1 GbE) Copper SFP+RJ45 Adapter (FC EN0V; CCIN 2CC3); Adapter FRU number: 00E2715; low-profile tailstock: 00E2720 PCIe2 x8 Short, low-profile Two 10 Gb copper twinax small form-factor pluggable (SFP+) ports Two 1 Gb RJ45 ports Ethernet network interface controller (NIC) function OS support: AIX®, IBM® i only with VIOS, Linux, and PowerKVM operating systems VIOS supported OS support: Red Hat Linux, Ubuntu, and PowerKVM operating systems	3, 2, 4	4
¹PCIe tailstock bracket to mount supercap pack for this adapter utilizes PCIe slot 1. ²Physical interference in slot 1 reduces maximum to 3.

Last updated: Wed, May 24, 2017