IBM Flex System Storage Expansion Node
2
Part number information
Table 1. Ordering part number and feature code
Description
Part number
Feature code
IBM Flex System Storage Expansion Node
68Y8588
A3JF
The part number includes the following items:
IBM Flex System Storage Expansion Node
Double-wide shelf
Documentation CD that contains the
Installation and Service Guide
Warranty information and Safety flyer and Important Notices document
Supported servers
The IBM Flex System Storage Expansion Node is supported when it is attached to the IBM Flex System
compute nodes listed in Table 2. Only one Expansion Node can be attached to each compute node.
Table 2. Supported servers
Description
Part
number
IBM Flex System Storage Expansion Node
68Y8588
Y*
Y*
N
N
N
N
* The Storage Expansion Node requires that both processors be installed in the x220 and x240.
Features
The System Expansion Node has the following features:
Connects directly to supported compute nodes via a PCIe 3.0 interface to the compute node's
interposer connector (also known as the ETE connector)
Support for 12 hot-swap 2.5-inch drives, accessible via a sliding tray
Support for 6 Gbps SAS and SATA drives, both HDDs and SSDs
Based on an LSI SAS2208 6 Gbps RAID on Chip (ROC) controller
Supports RAID 0, 1, 5, 10, and 50 as standard. JBOD also supported. Optional RAID 6 and 60 with a
Features on Demand upgrade.
Optional 512 MB or 1 GB cache with cache-to-flash super capacitor offload
Includes an expansion shelf to physically support the Storage Expansion Node and its compute node
attached together
Internal and external light path diagnostics
Optional Feature on Demand upgrades for RAID 6, 60 support and SSD performance and caching
enablers
Optional support for SSD performance acceleration and SSD caching with Features on Demand
upgrades
