managed disk group
A collection of managed disks (MDisks) that, as a unit, contain all the data
for a specified set of virtual disks (VDisks).
managed space mode
An access mode that enables virtualization functions to be performed. See
also image mode and unconfigured mode.
Management Information Base (MIB)
Simple Network Management Protocol (SNMP) units of managed
information that specifically describe an aspect of a system, such as the
system name, hardware number, or communications configuration. A
collection of related MIB objects is defined as a MIB.
mapping
See FlashCopy mapping.
master console
A single point from which to manage the IBM System Storage SAN
Volume Controller. The master console can be purchased as software that is
installed and configured on a server or as a hardware platform with the
operating system and master console software preinstalled.
master virtual disk
The virtual disk (VDisk) that contains a production copy of the data and
that an application accesses. See also auxiliary virtual disk.
MB See megabyte.
MDisk
See managed disk.
megabyte (MB)
In decimal notation, 1 048 576 bytes.
mesh configuration
A network that contains a number of small SAN switches configured to
create a larger switched network. With this configuration, four or more
switches are connected together in a loop with some of the paths short
circuiting the loop. An example of this configuration is to have four
switches connected together in a loop with ISLs for one of the diagonals.
method
A way to implement a function on a class.
Metro Mirror
A synchronous copy service that enables host data on a particular source
virtual disk (VDisk) to be copied to the target VDisk that is designated in
the relationship.
MIB See Management Information Base.
migration
See data migration.
mirrorset
IBM definition: See RAID-1.
HP definition: A RAID storageset of two or more physical disks that
maintain a complete and independent copy of the data from the virtual
disk. This type of storageset has the advantage of being highly reliable and
extremely tolerant of device failure. Raid level 1 storagesets are referred to
as mirrorsets.
174 IBM System Storage SAN Volume Controller: Hardware Installation Guide
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