Users Guide

Table Of Contents
Using disk roaming
Perform the following steps to use disk roaming:
1. Turn off the power to the system, physical disks, enclosures, and system components.
2. Disconnect power cables from the system.
3. Move the physical disks to desired positions on the backplane or the enclosure.
4. Perform a safety check. Make sure the physical disks are inserted properly.
5. Turn on the system.
The controller detects the RAID configuration from the configuration data on the physical disks.
FastPath
FastPath is a feature that improves application performance by delivering high I/O per second (IOPs) for solid-state drives
(SSDs). The Dell PERC 10 series supports FastPath.
To enable FastPath on a virtual disk, the cache policies of the RAID controller must be set to write-through and not read ahead.
This enables FastPath to use the proper data path through the controller based on command (read/write), I/O size, and RAID
type. For optimal solid-state drive performance, create virtual disks with strip size of 64 KB.
PERC H745P MX enclosure support
The H745P MX is a RAID controller for the PowerEdge MX740c and MX840c compute sleds. It is used as an interface in a
multipath topology with the MX5016s storage sled for the MX7000 modular system. The following illustration describes the
multipath topology for the MX7000 modular system:
18
Features