User's Manual

Glossary 89
stripe size
The total disk space consumed by a stripe, not including a parity disk.
striping
Disk striping writes data across all physical disks in a virtual disk. Each stripe
consists of consecutive virtual disk data addresses that are mapped in fixed-size
units to each physical disk in the virtual disk using a sequential pattern.
For example, if the virtual disk includes five physical disks, the stripe writes data
to physical disks one through five without repeating any of the physical disks.
The amount of space consumed by a stripe is the same on each physical disk.
The portion of a stripe that resides on a physical disk is a stripe element. Striping
by itself does not provide data redundancy. Striping in combination with parity
does provide data redundancy.
TPM
Trusted Platform Module. TPM is a secure cryptoprocessor that stores
cryptographic keys used to protect data.
UEFI
Unified Extensible Firmware Interface. UEFI is a specification that details an
interface for transitioning control from the pre-boot environment to the operating
system. See
www.uefi.org for more information.
virtual disk
A virtual disk refers to storage created by a RAID controller from one or more
physical disks. Although a virtual disk may be created from several physical disks,
it is seen by the operating system as a single disk. Depending on the RAID level
used, the virtual disk may retain redundant data in case of a disk failure.
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