Architecture This subsystem series offers a performance upgrade to the separate-bus, dual-ASIC design proven on previous RAID controllers. The series is specialized for flexible resource utilization to manage various-size IOs, random, or sequential access that requires high-speed throughput. The dual PCI bus design virtually eliminates all imminent bottlenecks on IO traffic,

Firmware Capabilities

Numerous firmware options have been designed to achieve the highest level of data availability and performance. In addition to the full-featured RAID and Recovery functionality, firmware is able to manage possible causes of data loss, even errors not directly related to RAID.

Automatic disk scanning can be carried out on a preset schedule to prevent parity damage due to the occurrence of block errors across multiple drives. Even if this happens, firmware is able to salvage most data by skipping those unrepairable data blocks.

Array capacity can be expanded online by adding drives or replacing the original drives with drives of larger capacity. Availability features include:dedicated and global spare drives,hot-swap drives, duplex support,remote and real-time monitoring,and SMART related functions.

Firmware operation is optimized with advanced algorithms capable of intelligent read-ahead, multithreaded,predictive read-ahead,optimized sorted and group writes.

Manageability

The Java-based RAIDWatch GUI manager provides easy-to-use interfaces, is rich in configuration options, and allows users to remotely manage their storage system over a network. Event Monitor and Notification Processing Center (NPC) submodules provide system managers the freedom of real-time monitoring with a variety of notification methods.

Enclosure

The subsystem is designed for operation with no single point of failure. Its modular and dualredundant design minimizes the time for maintenance and service. Up to 7 JBODs can be cascaded with a RAID unit to scale the capacity up to several terabytes (TB). The included Loop resiliency circuits provide dual drive loops consisting of 16 drives in either the RAID or JBOD units. The JBOD models come with single or dual SES modules. Once a JBOD's drive loops are connected with a RAID unit, its status will be automatically collected and shown via the web-based graphical interface.

SAN Features

Capacity is made available in a SAN through LUN Filtering, a centralized access management capability. Up to 1024 filtering entries are supported and multiple entries can be mapped to each logical partition of logical configurations. Various related functions, such as host port autoidentification, filter type selection, entry naming, and access mode configuration make shared storage an easier task.