Accusys ExaRAID GUI - Manual (Page 27)

Introduction
1-2
Comprehensive online reconfiguration utilities are available for migration
of RAID level and stripe size, volume management, capacity resizing, and
free space management.
• Outstanding Performance
The RAID controller delivers outstanding performance for both
transaction-oriented and bandwidth-hungry applications. Its superscalar
CPU architecture with L2 cache enables efficient IO command
processing, while its low-latency system bus streamlines large-block data
transfer.
In addition to the elaborated RAID algorithms, the controller implements
also sophisticated buffer caching and IO scheduling intelligence.
Extensive IO statistics are provided for monitoring the performance and
utilization of storage devices. Users can online adjust the optimization
policy of each LUN based on the statistics to unleash the most power of
the controller.
• Comprehensive and Effortless Management
Users can choose to manage the RAID systems from a variety of user
interfaces, including command line interface over local console and
secure shell (SSH), LCD panel, and web-based graphical user interface
(GUI). Events are recorded on the NVRAM, and mail is sent out to notify
the users without installing any software or agents. Maintenance tasks like
capacity resizing and disk scrubbing are online executable, and can be
scheduled or periodically executed. With the comprehensive
management utilities, users can quickly complete the configurations and
perform reconfiguration effortlessly.
1.2 Key Features
• Basic RAID Construction
• Multiple RAID levels: 0, 1, 3, 5, 6, 10, 30, 50, 60, JBOD, and NRAID
• Multiple stripe sizes (KB): 4, 8, 16, 32, 64, 128, 256, and 512.
• Independently-selectable strip size for each logical disk
• Independently-selectable RAID level for each logical disk
• Support Quick Setup for effortless and quick RAID configuration
• Support hot spare with global spare and local spare
• Support auto spare and spare restore options
• Support auto online disk rebuilding and configurable rebuild modes
• Multiple disk rebuilding modes: parallel, sequential, and prioritized
• Support up to 8 disk groups and 32 logical disks per disk group (Single
controller)