Users Guide

Table Of Contents
Figure 9. Multipath topology for the MX7000 modular system
In this illustration, the H745P MX resides in the compute sled and functions as an interface to the SAS topology of the MX7000.
The H745P MX is used to configure drives that are located in the MX5016s storage sled into RAID volumes. The H745P
MX connects to a pair of MX5000s SAS I/O modules (IOMs) that manage connections between the compute and storage
sleds in the MX7000. For more information about configuring drive assignments, see the www.dell.com/openmanagemanuals >
OpenManage Enterprise Modular.
NOTE: The I/O modules cannot be configured independently.
The H745P MX is connected to the SAS IOM, which in turn connects to one of the SAS expanders in the storage sled. The
expander in the storage sled is then connected to all the physical drives in the storage sled, providing one path between the
H745P MX and a physical drive in the storage sled. With connections to both SAS IOMs, the H745P MX has two paths to each
drive in a storage sled allowing for a multi-path configuration. If either a SAS IOM or a SAS expander in the storage sled is
removed, then a path to the physical drive is removed from the SAS topology.
Non-RAID disks
A non-RAID disk is a single disk to the host, and not a RAID volume. The only supported cache policy for non-RAID disks is
Write-Through.
Features
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