1 MB IO
The H740P and H840 controllers support 1 MB IO feature. If the capacity of IO frame is greater than 1 MB, the IO frame is broken into
smaller chunks.
Physical disk power management
Physical disk power management is a power-saving feature of the PERC 10 series cards. The feature allows disks to be spun down based
on disk configuration and I/O activity. The feature is supported on all rotating SAS and SATA disks and includes unconfigured and hot-spare
disks. The physical disk power management feature is disabled by default. You can enable the feature in the Dell Open Manage Storage
Management application or in the
Human Interface Infrastructure (HII) Configuration
utility. For more information on HII configuration
and physical disk power management, see
Enabling Physical Disk Power Management
. For more information on using the Dell Open
Manage Storage Management application, see the Dell OpenManage documentation at
Secure firmware update
This feature provides a cryptographic method of updating the firmware using RSA encryption-decryption algorithm.
Only Dell certified firmware is supported on your PERC controller.
Enhanced HBA mode
Enhanced HBA mode (eHBA mode) is a new operating mode available with H740P and H745P MX cards. eHBA provides the following
features:
•
Create virtual disks with RAID level 0, 1, or 10.
•
Present Non-RAID disks to the host.
•
Configure a default cache policy for virtual disks is write-back with read ahead.
•
Configure virtual disks and Non-RAID disks as valid boot devices
•
Automatically convert all unconfigured disks to Non-RAID:
– On system boot
– On controller reset
– When unconfigured disks are hot-inserted
NOTE:
Creating or Importing RAID 5, 6, 50, or 60 virtual disks are not supported.
NOTE:
Older versions of OpenManage Storage Management and Comprehensive Embedded Management do not support
management of the controller in Enhanced HBA mode.
NOTE:
In enhanced HBA mode, non-RAID disks are enumerated first in ascending order, while RAID volumes are enumerated in
descending order.
NOTE:
For more information, see the applicable systems management documentation.
14
Features
