tiered storage
A layered structure of performance levels, or tiers, that matches data
access requirements with the appropriate performance tiers. The tiers
are:
Tier 1: Static content. Tier 1 is fully supported computing expected to be
production quality.
Tier 2: Application logic. Tier 2 platforms are not supported by the
security officer and release engineering teams. Tier 2 systems are
targeted for Tier 1 support, but are still under development.
Tier 3: Database. Tier 3 platforms are architectures for which hardware is
not or will not be available or that are considered legacy systems unlikely
to see broad future use.
Tier 4 systems are not supported.
total capacity
The aggregate amount of storage space in a data storage system.
TPF
Transaction Processing Facility
V
V-VOL
virtual volume
VDEV
See virtual device.
view mode
The mode of operation of Device Manager - Storage Navigator that allows
viewing only of the storage system configuration. The two Device
Manager - Storage Navigator modes are view mode and modify mode.
virtual device (VDEV)
A group of logical devices (LDEVs) in a RAID group. A VDEV typically
consists of some fixed volumes (FVs) and some free space. The number
of fixed volumes is determined by the RAID level and device emulation
type.
404 Glossary
System Administrator Guide for VSP Gx00 models and VSP Fx00 models
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