Setup Guide

Example
For example:
esxcli iscsi adapter param set -A vmhba64 -k LoginTimeout -v 30
vStorage API for System Integration (VAAI) Settings
PowerStore Storage cluster fully supports VAAI. VAAI must be enabled on the ESXi host before using PowerStore.
VAAI is an API that offloads operations such as virtual machine provisioning, storage cloning, and space reclamation to storage
clusters that supports VAAI. PowerStore clusters fully support VAAI.
To ensure optimal performance of PowerStore storage from vSphere, VAAI must be enabled on the ESXi host before using
PowerStore storage from vSphere. Failing to do so may expose the PowerStore cluster to the risk of datastores becoming
inaccessible to the host.
This section describes the necessary settings for configuring VAAI for PowerStore storage.
Confirming that VAAI is Enabled on the ESXi Host
Follow these instructions to confirm that VAAI is enabled on the ESXi host.
About this task
When using vSphere ESXi version 6.5 and above, VAAI is enabled by default. Before using the PowerStore storage, confirm that
VAAI features are enabled on the ESXi host.
Verify that the following parameters are enabled (that is, set to 1):
● DataMover.HardwareAcceleratedMove
● DataMover.HardwareAcceleratedInit
● VMFS3.HardwareAcceleratedLocking
If any of the above parameters are not enabled, click the Edit icon and click OK to adjust them.
Setting the Maximum I/O
Follow this guideline to set the maximum I/O request size for storage devices.
Disk.DiskMaxIOSize determines the maximum I/O request size passed to storage devices. With PowerStore, it is required
to change this parameter from 32767 (the default setting of 32MB) to 1024 (1MB).
Example: Setting Disk.DiskMaxIOSIze to 1024 (1MB)
esxcli system settings advanced set -o "/Disk/DiskMaxIOSize" --int-value 1024
NOTE:
For details on a possible Windows EFI boot issue with PowerStore storage (in case the above maximum I/O block
size setting adjustment cannot be done), refer to VMware KB article 2137402 on the VMware website (https://
kb.vmware.com/s/article/2137402). This KB article also lists all ESXi versions that include a fix for this issue. With these
versions the Disk.MaxIOSize setting adjustment to 1024 (1MB) is not required. In such cases, to avoid a potential host-side
DU issue when upgrading the ESXi version on the host, make sure to refer to this KB and confirm that the target ESXi
version also includes a fix for this Windows EFI boot issue.
Host Configuration for VMware vSphere ESXi 21