User Manual
Table Of Contents
- ROMB User Manual
- Contents
- Chapter 1: Introduction
- Chapter 2: Installation
- Chapter 3: Installing Drivers
- Chapter 4: RAID Management Utility
- Chapter 5: WebPAM
- Logging into WebPAM
- Logging out of WebPAM
- Managing Users
- Viewing Host Management
- Making Utility Configuration Settings
- Managing the Controller
- Managing Physical Drives
- Managing Logical Drives
- Viewing All Logical Drives
- Creating a Logical Drive
- Creating a JBOD Disk
- Deleting a Logical Drive or JBOD Disk
- Viewing Logical Drive Information
- Making Logical Drive Settings
- Migrating a Logical Drive
- Rebuilding a Logical Drive
- Synchronizing a Logical Drive
- Viewing Logical Drive Initialization
- Activating a Logical Drive
- Responding to a Critical or Offline Logical Drive
- Managing Spare Drives
- Chapter 6: Technology
- Chapter 7: Support
- Appendix A: Partition and Format
- Appendix B: Upgrades
- Index
Chapter 6: Technology
103
SPAN – Concatenated Drives
An alternative to RAID, Spanning or Concatenating capacity is equal to the
cumulative size of the physical drives that are joined together.
SPAN appears in the User Interface as one individual drive.
There are no performance or fault-tolerance features. When one disk fails, the
span or concatenation is broken, possibly complicating data recovery from the
other disks.
Figure 6. SPAN appears in the User Interface as one individual drive.
The advantage to a SPAN is the ability to connect multiple small disk drives into a
single large drive without any wasted disk space and a minimum of management.
A SPAN logical drive requires two or more physical drives.
A single-drive SPAN has no advantage over an individual disk drive. However,
you can add more drives to the SPAN as your requirements increase.
Physical Drives
Data Spanning