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Features 29
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Patrol Read
does not run on any disks involved in any of the
following operations:
–Rebuild
– Replace Member
– Full or Background Initialization
–CC
–RLM or OCE
NOTE: By default, Patrol Read automatically runs every seven days on configured
SAS and SATA hard drives. Patrol Read is not necessary on SSD and is disabled by
default.
For more information on Patrol Read, see the Dell OpenManage
documentation at support.dell.com/manuals.
Redundant Path Support (For PERC H810 Only)
The PERC H810 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 Management
Module (EMM) by utilizing the remaining path.
When redundant paths exist, the controller automatically balances I/O load
through both paths to each disk. Load balancing increases throughput to
virtual disks in storage enclosures and is automatically turned on when
redundant paths are detected. The ability to load balance I/O can be disabled
using the Dell OpenManage storage management application.
To set up your hardware to support redundant paths, see "Setting up
Redundant Path Support on the PERC H810 Adapter" on page 40.
NOTE: This support for redundant paths refers to path-redundancy only and not to
controller-redundancy.