Users Guide

CAUTION: When removing or replacing the PERC Mini Monolithic Controller, hold the card

by its edges marked by the blue touch points. Do not handle the card while holding the

battery or the heatsink.

For more information, see the relevant figures in Removing The PERC Controller.

4. Replace the system cover.

5. Reconnect the system to its electrical outlet and turn the system on, including any attached

peripherals.

Support For Internal Multiple Controllers

On PowerEdge systems with dual bays (backplanes), the disk drives are managed by independent PERC

H710P cards. The PERC H710P cards do not share the disks or the RAID volumes. A drive can be identified

using the following as guideline: Controller: Bay/Backplane: Slot.

Setting Up Redundant Path Support On The PERC H810

Adapter

The PERC H810 card can detect and use redundant paths to disks contained in enclosures. With

redundant paths to the same device, if one path fails, another path can be used to communicate between

the controller and the device.

To set up a configuration with redundant paths, both ports on a controller must be cabled to the In ports

of a single enclosure.

To add multiple enclosures, both Out ports of the first enclosure must be cabled to the In ports of the

next enclosure.

If the connection between an Out port on the controller and an In port on an enclosure fails, an alternate

path exists through the second Out port on the controller and the second In port on the enclosure. For

more information, see the following figure.

NOTE: The PERC H810 card supports redundant paths when used with Dell PowerVault MD1200

and Dell PowerVault MD1220 disk storage enclosures.

Perform the following steps to configure the hardware to utilize redundant paths on the PERC H810 card:

1. Set up an enclosure on the PERC H810 card.

2. Connect two SAS cables from the Out ports on your PERC H810 card to the In ports of the external

enclosure. For more information, see the following figure.

NOTE: For information on Unified Mode, see the enclosure documentation that was shipped

with the enclosure.

3. To add multiple enclosures, cable both Out ports of the first enclosure to both In ports of the next

enclosure.

After you set up the hardware, the controller detects the redundant paths and automatically utilizes

them to balance the I/O load.

Reverting To Single Path Support From Redundant Path

Support For PERC H810

If you need to revert to single path support from redundant path support, shut down the system and

remove the exact same cables that were added to support redundant path support, leaving only one