Users Guide

Table Of Contents
RAID 0 characteristics:
Groups n disks as one large virtual disk with a capacity of (smallest disk size) *n disks.
Data is stored to the disks alternately.
No redundant data is stored. When a disk fails, the large virtual disk fails with no means of rebuilding the data.
Better read and write performance.
RAID level 1 - mirroring
RAID 1 is the simplest form of maintaining redundant data. In RAID 1, data is mirrored or duplicated on one or more physical
disks. If a physical disk fails, data can be rebuilt using the data from the other side of the mirror.
RAID 1 characteristics:
Groups n + n disks as one virtual disk with the capacity of n disks. The controllers currently supported by Storage
Management allow the selection of two disks when creating a RAID 1. Because these disks are mirrored, the total storage
capacity is equal to one disk.
Data is replicated on both the disks.
When a disk fails, the virtual disk still works. The data is read from the mirror of the failed disk.
Better read performance, but slightly slower write performance.
Managing storage devices
221