IBM Power Systems Series Site And Hardware Planning

4. The long end (0.5 m) of the YO cable must be connected to the left side of the enclosure (as viewed
from the rear). The short end (0.25 m) of the YO cable must be connected to the right side of the
enclosure (as viewed from the rear).
The following list describes the supported configurations for connecting the FC 5901 or FC 5278 adapter
to a 5887:
1. Single FC 5901 or FC 5278 adapter to one 5887 enclosure via a mode 1 connection.
v 5887 enclosure with one set of 24 hard disk drives (HDDs).
v Connection using SAS YO cables to connect to the 5887 enclosure.
v Supported only on AIX and Linux systems.
2. Single FC 5901 or FC 5278 adapter to two 5887 enclosures via a mode 1 connection.
v 5887 enclosures with two sets of 24 hard disk drives (HDDs).
v Connection using SAS YO cables to connect to the 5887 enclosures.
v Supported only on AIX and Linux systems.
3. Dual FC 5901 or FC 5278 adapters to one 5887 enclosure via a mode 1 connection.
v 5887 enclosure with one set of 24 hard disk drives (HDDs).
v Connection using dual SAS YO cables to connect to the 5887 enclosure.
v Supported only on AIX and Linux systems.
Figure 78. Mode 1 connection of a 5887 enclosure by using a YO cable to a single SAS adapter
148 Site and hardware planning

IBM Power Systems Series Specifications

General

Virtualization	PowerVM
Architecture	POWER
Operating System	AIX, IBM i, Linux
Use Case	Enterprise workloads, cloud
Form Factor	Rack-mount
I/O	PCIe
Power Supply	Redundant power supplies available
Management	HMC (Hardware Management Console)
Processor	IBM POWER processors (POWER9, POWER10, etc.)
Storage	Supports various storage options including SSDs and HDDs