Ip Address Allocation And Usage; Planning For High Availability; Storage Configuration Planning; Planning The Network And Storage Network - IBM Elastic Storage System 5000 Series Hardware Manual

IP address allocation and usage

As you plan your installation, you must consider IP address requirements and service access for the
system.
ESS 5000 uses 100GbE/100Gb EDR network for cluster communication and data transport. For IP port
usage requirement, see IBM Spectrum Scale Knowledge Center. For more information about the
management network and the IP address requirements, see ESS 5000 Quick Deployment Guide.
Model 092 does not require IP address for management and service in the ESS 5000 application. All
management and service tasks are done via ESS 5000 I/O server node. For more information about the
management IP requirement and service ports, see ESS 5000 Quick Deployment Guide.

Planning for high availability

IBM Spectrum Scale can provide rack level redundancy and stretched cluster using file system data
replication. AFM-DR can be used for site-level disaster recovery. For more details, see IBM Spectrum
Scale Knowledge Center.

Storage configuration planning

Model 092 expansion enclosure provides optimal configuration of IBM Spectrum Scale RAID. For further
customization, see IBM Spectrum Scale RAID Administration guide.

Planning the network and storage network

Plan to provide the network infrastructure and the storage network infrastructure that your system
requires.
You need to use only supported switches, cables, and other network components. See the IBM support
website for specific firmware levels and the latest supported hardware.
Model 092 expansion enclosure is directly attached to the I/O server nodes in ESS 5000 application and
the enclosure does not require and a switch or other infrastructure. For more information about the
network attachment requirements, see the ESS 5000 Quick Deployment Guide.

Planning for cables

Connections for Model 092 expansion enclosure

The I/O server nodes of the ESS 5000 building block are preinstalled with LSI 9305-16 12 Gbps host bus
adapter (HBA) (feature code ESA5). The SAS adapters are connected to the Model 092 expansion
enclosure via a mini SAS HD active optical cable (AOC) (feature code AJGB).
Each expansion enclosure contains two I/O modules (IOM) that provide the switching functions between
the drives and the cable that is connected in the ports by using multiple SAS expanders. Figure 7 on page
34 shows IOM ports.
Chapter 4. Planning for hardware 33