Users Guide
Features
PowerEdge RAID Controller (PERC) nine series cards support the following features:
• Enhanced rebuild prioritization
• 240 virtual disk support for H830
• Personality mode management
• Secure rmware update
• Improved RAID 10 conguration
• 4 KB sector disk drives
• 1 MB IO support for H730, H730P, H730P MX, and H830 controllers
NOTE: The 1 MB IO feature must be enabled by using PERC CLI command perccli /cx set largeIOsupport=on. If the
capacity of IO frame is greater than 1 MB, the IO frame is broken into smaller chunks.
Topics:
• Enhanced rebuild prioritization
• Redundant path support for PERC H830
• 240 virtual disk support for H830
• PERC 9 personality management
• Secure rmware update
• Improved RAID 10 conguration
• 4 KB sector disk drives
• Physical disk power management
• Types of virtual disk initialization
• Background initialization
• Consistency checks
• Disk roaming
• FastPath
• Virtual disk migration
• Virtual disk write cache policies
• Virtual disk read cache policies
• Reconguration of virtual disks
• Fault tolerance
Enhanced rebuild prioritization
If the rebuild rate parameter on Dell PowerEdge RAID Controller (PERC) is set to above 30%, then the PERC modies the command
allocation strategy to prioritize rebuild operations, when the application I/O is consistent in the disk group.
Redundant path support for PERC H830
The PERC H830 adapter can detect and use redundant paths to disks contained in enclosures. This provides the ability to connect two
SAS cables between a controller and an enclosure for path redundancy. The controller is able to tolerate the failure of a cable or Enclosure
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22 Features