IBM Ambra Achiever 5000, Hardware Manual

Page: 68 / 78

I
IBM Security Key Lifecycle Manager (ISKLM)
For GPFS encryption, the ISKLM is used as an RKM server to store MEKs.
independent fileset
A fileset that has its own inode space.
indirect block
A block that contains pointers to other blocks.
inode
The internal structure that describes the individual files in the file system. There is one inode for each
file.
inode space
A collection of inode number ranges reserved for an independent fileset, which enables more efficient
per-fileset functions.
Internet Protocol (IP)
The primary communication protocol for relaying datagrams across network boundaries. Its routing
function enables internetworking and essentially establishes the Internet.
I/O server node
An ESS node that is attached to the ESS storage enclosures. It is the NSD server for the GPFS cluster.
IP
See Internet Protocol (IP).
IP over InfiniBand (IPoIB)
Provides an IP network emulation layer on top of InfiniBand RDMA networks, which allows existing
applications to run over InfiniBand networks unmodified.
IPoIB
See IP over InfiniBand (IPoIB).
ISKLM
See IBM Security Key Lifecycle Manager (ISKLM).
J
JBOD array
The total collection of disks and enclosures over which a recovery group pair is defined.
K
kernel
The part of an operating system that contains programs for such tasks as input/output, management
and control of hardware, and the scheduling of user tasks.
L
LACP
See Link Aggregation Control Protocol (LACP).
Link Aggregation Control Protocol (LACP)
Provides a way to control the bundling of several physical ports together to form a single logical
channel.
logical partition (LPAR)
A subset of a server's hardware resources virtualized as a separate computer, each with its own
operating system. See also node.
LPAR
See logical partition (LPAR).
56 IBM Elastic Storage System 5000: Hardware Guide