User manual
Table Of Contents
- RAIDXpert User Manual
- Contents
- Chapter 1: Introduction
- Chapter 2: Installation
- Chapter 3: Setup
- Chapter 4: RAIDXpert User Interface
- Chapter 5: Monitoring and Managing
- Logging into RAIDXpert
- Choosing a Language
- Logging out of RAIDXpert
- User Management
- Host Management
- Utility Configuration
- Controller
- Physical Drives
- Logical Drives
- Viewing Logical Drives
- Creating a Logical Drive
- Deleting a Logical Drive
- Viewing Logical Drive Information
- Making Logical Drive Settings
- Backing up a RAID Ready Logical Drive
- Migrating a Logical Drive
- Rebuilding a Logical Drive
- Synchronizing All Logical Drives
- Synchronizing One Logical Drive
- Initializing a Logical Drive
- Logical Drive Activation
- Managing a Critical or Offline Logical Drive
- Spare Drives
- Chapter 6: Technology Background
- Appendix A: Frequently Asked Questions
- Appendix B: Partition and Format
Chapter 6: Technology Background
101
Choosing a RAID Level
There are several issues to consider when choosing the RAID Level for your
logical drive. The following discussion summarizes some advantages,
disadvantages, and applications for each choice.
RAID 0
Recommended Applications for RAID 0:
• Image Editing
• Pre-Press Applications
• Any application requiring high bandwidth
RAID 1
Recommended Applications for RAID 1:
• Accounting
•Payroll
• Financial
• Any application requiring very high availability
Advantages Disadvantages
Data is broken down into blocks and
each block is written to a separate
physical drive
I/O performance is greatly improved by
spreading the I/O load across multiple
channels and drives
No parity calculation overhead is
involved
Not a true RAID because it is not fault-
tolerant
The failure of just one drive will result in
all data in a logical drive being lost
Should not be used in mission critical
environments
Advantages Disadvantages
Simplest RAID storage subsystem
design
Can increase read performance by
processing data requests in parallel
since the same data resides on two
different drives
Very high disk overhead - uses only
50% of total capacity