User`s guide

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1: Storage System Overview
RAID Configuration Features
• 64-drive maximum configuration
• 32 logical units maximum
Release 6.0 Features
Version 9.03 FFx2 controller firmware introduces the following new features over the 8.40
and 8.50 controller firmware versions:
Disk Drive Predictive Failure Analysis
Predictive failure analysis (PFA) monitors events on disk drives, sets the frequency of the
interval used to poll individual drives for PFA events, instructs the controller as to what
action should be taken regarding a disk that reports a PFA event, and scans all drives as
a one time maintenance check. This information is an indication of an error or detected
problem with the physical disk drive and the drive should be replaced. Mylex controllers
recognize the PFA information and set the device state to offline failed.
The user can specify what to do when a disk drive reports a PFA condition: either place
the drive in the offline state and begin a rebuild process, or inform the user via the
configuration/monitoring interface that an event has occurred. The user can also launch
a single maintenance check and set the interval for repeated polling of PFA events.
Rolling Upgrade Capability
This feature is available in firmware releases 9.03 and higher.
Note: Controller firmware may be upgraded from 9.03 to a later release without
interruption. However, rolling upgrades can only be done on dual-active controllers that
are configured for failover/failback operation.
The rolling firmware upgrade feature enables the user of a dual-active system to upgrade
the controller firmware to a new release level while online and without losing data
access. During the process, all I/O is routed first through one controller while the other
controller is flashed and restarted with the new firmware image. Once the new firmware
image is installed on one controller, I/O is shifted to the upgraded controller, and the