Dell EMC H745P MX - Profile Management; Virtual Disk Features

Setting up redundant path support on the PERC H840 adapter
The PERC H840 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 connect single enclosure, cable the ports so that the enclosure is connected to both the ports on the controller card. See Figure 6.
PERC H840 Card ports - Four enclosures with multipath conguration in PERC H840 enclosure support.
Prole Management
PERC 10 introduces the concept of proles. A prole is user selectable. It denes controller queue depth and the maximum number of
physical and virtual disks. There are two proles: PD64 and PD240. The H740 supports only the PD64 prole. The H745P MX supports only
the PD240 prole. The H840 supports both PD64 and PD240. PD240 is the default prole on H840. For more information see Changing
prole using HII Conguration Utility.
NOTE: When H740 or H840 controller is upgraded to 50.3.0-1022 from an older rmware, prole on the controller is set to PD64.
Table 3. Supported Proles on PERC 10
Feature PD64 PD240
Prole ID 10 12
Maximum physical disk supported 64 240
Maximum virtual disk supported 64 240
Controller queue depth 4096 3072
Maximum enclosure supported
• One enclosure using multipath
conguration
• Two enclosure using single path
conguration
• Four enclosure using multipath conguration
• Eight enclosure using single path
conguration
NOTE: In the MX chassis, H745P MX supports seven enclosures using a multipath
conguration.
NOTE: PD64 is supported on internal and external controllers, whereas PD240 is supported on the H840 and H745P MX.
Virtual disk features
This section lists the following virtual disk features supported on PowerEdge RAID Controller (PERC) 10 cards in detail:
• Virtual disk write cache policy
• Virtual disk read cache policy
• Virtual disk migration
• Virtual disk Initialization
• Reconguration of virtual disk
• Background operations
Features
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