IBM Elastic Storage System 3200 Service Guide

PortFast
A Cisco network function that can be congured to resolve any problems that could be caused by the
amount of time STP takes to transition ports to the Forwarding state.
R
RAID
See redundant array of independent disks (RAID).
RDMA
See remote direct memory access (RDMA).
redundant array of independent disks (RAID)
A collection of two or more disk physical drives that present to the host an image of one or more
logical disk drives. In the event of a single physical device failure, the data can be read or regenerated
from the other disk drives in the array due to data redundancy.
recovery
The process of restoring access to le system data when a failure has occurred. Recovery can involve
reconstructing data or providing alternative routing through a different server.
recovery group (RG)
A collection of disks that is set up by ESS, in which each disk is connected physically to two servers: a
primary server and a backup server.
remote direct memory access (RDMA)
A direct memory access from the memory of one computer into that of another without involving
either one's operating system. This permits high-throughput, low-latency networking, which is
especially useful in massively-parallel computer clusters.
RGD
See recovery group data (RGD).
remote key management server (RKM server)
A server that is used to store master encryption keys.
RG
See recovery group (RG).
recovery group data (RGD)
Data that is associated with a recovery group.
RKM server
See remote key management server (RKM server).
S
SAS
See Serial Attached SCSI (SAS).
secure shell (SSH)
A cryptographic (encrypted) network protocol for initiating text-based shell sessions securely on
remote computers.
Serial Attached SCSI (SAS)
A point-to-point serial protocol that moves data to and from such computer storage devices as hard
drives and tape drives.
service network
A private network that is dedicated to managing POWER8 servers. Provides Ethernet-based
connectivity among the FSP, CPC, HMC, and management server.
SMP
See symmetric multiprocessing (SMP).
Spanning Tree Protocol (STP)
A network protocol that ensures a loop-free topology for any bridged Ethernet local-area network. The
basic function of STP is to prevent bridge loops and the broadcast radiation that results from them.
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IBM Elastic Storage System 3200: Service Guide

IBM Elastic Storage System 3200 Specifications

General

Brand	IBM
Model	Elastic Storage System 3200
Category	Storage
Language	English