Users Guide
Table Of Contents
- Dell EqualLogic Host Integration Tools for Microsoft Edition Version 5.4 Installation and User's Guide
- About This Guide
- Introduction to Host Integration Tools
- Installation
- Obtain the Installation Kit
- Installation Considerations
- Install Host Integration Tools for Microsoft
- Install HIT/Microsoft on a Windows Server Core Machine
- Install HIT on a Windows Server Core Cluster
- About Remote Host Installations
- Install HIT on a Failover Cluster
- About Silent Installations
- Using HIT With a SharePoint Farm
- Remote Setup Wizard
- Remote Setup Command Line Utility
- Using the Multipath I/O Component
- Use the VDS Provider
- Use SCVMM With the Dell EqualLogic SMP
- Install the Dell EqualLogic Storage Management Provider
- Configure the Dell EqualLogic Storage Management Provider
- Create a Classification for Dell EqualLogic Storage Resources
- Import the SMP Through the SCVMM GUI
- Configure PS Series Groups
- Configure Group Access on Managed Hosts and Clusters
- Configure Storage for VM Rapid Provisioning
- Create a VM Template From a VHD
- Migrate the Rapid-Provisioned VMs
- Migrate Storage of a Deployed VM to Another Location
- Troubleshoot SCVMM Issues
- Supported SMP PowerShell Cmdlets
- Use the HPC iSCSI Provider
- Tools and Utilities
- Index
Figure 2. Multipath I/O Configuration
The table below describes the callouts in the above figure.
Number
Callout Description
1 eqldsm.sys or dcdsm.sys - kernel mode driver (performs I/O path selection and error handling)
2 EHCMservice.exe user mode service (manages iSCSI sessions), and DC-HAService.exe user mode
service (manages import operation)
3 Two or more gigabit Ethernet (1 Gb/sec) NICs or HBAs
4 Two or more (redundant) physical paths to dual redundant network switches
5 Two or more (redundant) physical paths provide a network switch interlink
6 Two or more (redundant) physical paths from the network switches (connected to the separate redundant
controllers in each member in the PS Series group)
7 PS Series group
Determining the Number of iSCSI Sessions for a Volume Slice
The number of paths created by the MPIO DSM depends on the topology of your SAN and the MPIO settings on the host
computer. Every volume is distributed across one or more members in the PS Series group. The portion of a volume that is
located on a single member is referred to as a volume slice. The EHCMservice creates one or more iSCSI sessions to each
volume slice. The actual number of sessions is determined through the following steps:
1. Calculate the optimal number of sessions to maximize the bandwidth between the host and the member.
This calculation takes into account the speed of available host adapters and network interface cards (NICs) on each member
hosting part of the volume. The algorithm will not create unnecessary sessions when performance will not benefit. Therefore,
in configurations that have limited numbers of computer and member Ethernet ports, the actual number of sessions created
might be fewer than the user limits specified in the next step.
● Example A—You have two 1Gb host NICs, and are connecting to a volume on members with four 1Gb Ethernet ports. The
optimal number of sessions is two per member, because that number will saturate the host NICs.
● Example B—You have one 10Gb host NIC, and are connecting to a volume on members with four 1Gb Ethernet ports.
The optimal number of sessions is four per member, because that number will saturate the member Ethernet ports.
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Using the Multipath I/O Component