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Chapter 1 - Getting Started
RAID Controllers
The NexStor 4900F Series Storage System is designed to house one or two hot
pluggable Wahoo2 RAID Controllers. The controller is the latest next generation
dual port high-performance 2 Gb/second Fibre Channel-to-Fibre Channel RAID
controller supporting RAID levels 0, 1, 5, 10, and 50.
The RAID Controllers are designed for "I/O Intensive" and "Bandwidth Intensive"
applications, providing simplex (stand-alone) and duplex (active-active)
configurations designed for existing and future Fibre Channel topologies. In
simplex operations, the controller operates autonomously. In duplex
configurations, the two controllers operate as a pair. In the event one controller
fails, fault tolerance is maintained via hardware failover allowing either controller to
take over the operations of the other controller.
Each RAID Controller has two Fibre Channel ports and two Fibre Channel disk
ports for a "2x2" configuration (dual host-dual drive). In duplex configurations, it
can process up to 80,000 I/O's per second (IOPS). The active-active pair of RAID
controllers can feed data to SAN nodes at a sustained rate of 320 MB/sec, and
process RAID 5 write operations at 220 MB/sec.
16
RAID Controllers
10/100Base-T Ethernet
Networking Connection
Applicable to
NexStor 4931F, 4932F,
4941F and 4942F
Storage Systems with
embedded StorView
Test Port
(Factory use only)
RS-232 Service Port
Over Current, Partner Status,
Dirty Cache, and Power LEDs
Controller Status LEDs
Wahoo2 RAID Controller
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