Dell PowerStore 3000T EMC PowerStore Host Configuration Guide - Page 17

Fibre Channel HBA Configuration, Pre-Requisites, iSCSI Configuration

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Validation ESXi configuration: Keep the UNMAP priority for the host at the lowest possible value (default value for ESXi 6.5). Path selection policy: VMW_PSP_RR Impact Stability & Performance Stability & Performance Alignment: Guest OS virtual machines should be aligned. iSCSI configuration: Configure end-toend Jumbo Frames. iSCSI configuration: Disable Delayed ACK on ESXi. iSCSI configuration: Adjust LoginTimeOut to 30. Path switching: Switch for every I/O. Storage efficiency & Performance Performance Stability Stability Performance Virtual Disk Provisioning: Use thin provisioned virtual disks. Performance Virtual machine configuration: Configure Stability & Performance virtual machines with Paravirtualized SCSI controllers. RDM volumes: In Guest OS, span RDM volumes used by the virtual machine across SCSI controllers. Performance Severity Mandatory Mandatory Warning Recommended Recommended Recommended Recommended Recommended Recommended Recommended Refer to Section Confirming UNMAP Priority Configuring vSphere Native Multipathing Disk Formatting Jumbo Frames Delayed ACK Login Timeout Configuring vSphere Native Multipathing Virtual Machine Formatting VMware Paravirtual SCSI controllers Virtual Machine Guest OS Settings NOTE: For information on virtualization and Virtual Volumes, refer to the PowerStore Virtualization Guide and the Best Practices Guide. Fibre Channel HBA Configuration This section describes the recommended configuration that should be applied when attaching hosts to PowerStore cluster using Fibre Channel . NOTE: This section applies only to Fibre Channel. If you are using only iSCSI, go to iSCSI HBA Configuration. NOTE: Review Fibre Channel SAN Guidelines before you proceed. Pre-Requisites Before installing HBAs on an ESXi host, the following pre-requisites should be met: • Refer to the E-Lab Interoperability Navigator (https://elabnavigator.emc.com) for supported FC HBA models and drivers. • Verify that all HBAs have supported driver, firmware and BIOS versions. • Verify that all HBAs BIOS settings are configured according to E-Lab recommendations. iSCSI Configuration This section describes the recommended configuration that should be applied when attaching hosts to a PowerStore cluster using iSCSI. NOTE: This section applies only for iSCSI. If you are using only Fibre Channel with vSphere and PowerStore, go to Fibre Channel HBA Configuration. Host Configuration for VMware vSphere ESXi 17

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Validation
Impact
Severity
Refer to Section
ESXi configuration: Keep the UNMAP
priority for the host at the lowest
possible value (default value for ESXi
6.5).
Stability & Performance
Mandatory
Confirming UNMAP Priority
Path selection policy:
VMW_PSP_RR
Stability & Performance
Mandatory
Configuring vSphere Native
Multipathing
Alignment: Guest OS virtual machines
should be aligned.
Storage efficiency &
Performance
Warning
Disk Formatting
iSCSI configuration: Configure end-to-
end Jumbo Frames.
Performance
Recommended
Jumbo Frames
iSCSI configuration: Disable Delayed
ACK on ESXi.
Stability
Recommended
Delayed ACK
iSCSI configuration: Adjust
LoginTimeOut
to 30.
Stability
Recommended
Login Timeout
Path switching: Switch for every I/O.
Performance
Recommended
Configuring vSphere Native
Multipathing
Virtual Disk Provisioning: Use thin
provisioned virtual disks.
Performance
Recommended
Virtual Machine Formatting
Virtual machine configuration: Configure
virtual machines with Paravirtualized
SCSI controllers.
Stability & Performance
Recommended
VMware Paravirtual SCSI
controllers
RDM volumes: In Guest OS, span RDM
volumes used by the virtual machine
across SCSI controllers.
Performance
Recommended
Virtual Machine Guest OS
Settings
NOTE:
For information on virtualization and Virtual Volumes, refer to the
PowerStore Virtualization Guide
and the
Best
Practices Guide
.
Fibre Channel HBA Configuration
This section describes the recommended configuration that should be applied when attaching hosts to PowerStore cluster using Fibre
Channel .
NOTE:
This section applies only to Fibre Channel. If you are using only iSCSI, go to
iSCSI HBA Configuration
.
NOTE:
Review
Fibre Channel SAN Guidelines
before you proceed.
Pre-Requisites
Before installing HBAs on an ESXi host, the following pre-requisites should be met:
•
Refer to the E-Lab Interoperability Navigator (
) for supported FC HBA models and drivers.
•
Verify that all HBAs have supported driver, firmware and BIOS versions.
•
Verify that all HBAs BIOS settings are configured according to E-Lab recommendations.
iSCSI Configuration
This section describes the recommended configuration that should be applied when attaching hosts to a PowerStore cluster using iSCSI.
NOTE:
This section applies only for iSCSI. If you are using only Fibre Channel with vSphere and PowerStore, go to
Fibre
Channel HBA Configuration
.
Host Configuration for VMware vSphere ESXi
17