IBM 5000 Manual Del Usario página 102

O
OFED
See OpenFabrics Enterprise Distribution (OFED).
OpenFabrics Enterprise Distribution (OFED)
An open-source software stack includes software drivers, core kernel code, middleware, and user-
level interfaces.
P
pdisk
A physical disk.
PortFast
A Cisco network function that can be configured 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).
recovery
The process of restoring access to file system data when a failure has occurred. Recovery can involve
reconstructing data or providing alternative routing through a different server.
recovery group data (RGD)
Data that is associated with a recovery group.
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.
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.
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.
remote key management server (RKM server)
A server that is used to store master encryption keys.
RG
See recovery group (RG).
RGD
See recovery group data (RGD).
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.
88 IBM Elastic Storage System 5000: Guía de hardware del Modelo 092