Gen4 PCIe I/O Expansion Drawer
A 12- or 24-slot PCIe expansion drawer that adds adapter capacity beyond a Power 11 chassis's direct PCIe slots for networking, SAN, and tape connectivity.
Every current Power 11 scale-out and enterprise model ships with only 4 direct PCIe slots on the chassis itself; the Gen4 I/O expansion drawer is how buyers add real adapter capacity for networking, SAN, and tape connectivity beyond that direct-slot ceiling.
I/O expansion drawer slots by model
| Model | Direct PCIe Slots | Expansion Drawer Slots |
|---|---|---|
| S1122 | 4 | 12 (1 drawer) |
| S1124 | 4 | 24 x 2 drawers = 48 |
| L1122 | 4 | 24 (1 drawer) |
| L1124 | 4 | 24 (1 drawer) |
| E1150 | 4 per node | 24 x up to 4 drawers per node |
| E1180 | 4 per node | 24 x up to 4 drawers per node |
Related
NED24 NVMe Expansion Drawer
An external NVMe expansion drawer that extends direct-attached flash storage capacity beyond a Power 11 chassis's internal drive bays.
PCIe Adapters for Power 11
Networking, SAN, and tape connectivity adapters across direct-chassis PCIe Gen4 slots, the I/O layer common to every current Power 11 model.
Power 11 DCM Processor Modules
The Dual-Chip Module (DCM) processor option used across S1122, S1124, L1122, L1124, E1150, and E1180 for maximum core count and throughput.
Power 11 eSCM Processor Modules
The entry Single-Chip Module (eSCM) processor option used on S1112 and S1122 for cost-effective smaller-core configurations.