EMC XtremIO: VMware ESXi Multi-Array Settings

The following table represents the recommended VMware vSphere ESXi host settings to be applied when an ESXi host(s) is connected to a single array and also details multi-array settings when at least one of the arrays is XtremIO.

The following information is referenced from EMC KB303782:
Recommended settings for VNX, VMAX, VPLEX, and XtremIO Colocation within VMware vSphere



  1. Unless otherwise noted, the term VMAX refers to VMAX, VMAX3, and VMAX All Flash arrays
  2. The setting for FC Adapter policy IO Throttle Count can be set to the value specific to the  individual storage array type if connections are segregated. If the storage arrays are connected using the same vHBA s, use the multi-array setting in the table.
  3. The value for Disk.SchedNumReqOutstanding can be set on individual LUNs and therefore the value used should be specific to the underlying individual storage array type.


Related Post:

EMC XtremIO – Setting Disk.SchedNumReqOutstanding On vSphere 5.5 & 6.0 (PowerCLI)

VMware PowerCLI – Enable/Disable SSH Per vSphere Cluster

The following script allows the user to Enable/Disable SSH at a per vSphere cluster level. You may download the ‘SSH.ps1‘ script here: SSH.ps1 (Remove the .doc extension).

The script will begin by prompting you to enter the vCenter Host IP Address, username and password. A list of all the available clusters residing in vCenter will be returned, followed by a prompt to enter the cluster name you wish to Enable/Disable SSH for:

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Introducing VCE VxRAIL

A Quantum Leap in Hyper-Converged Appliances

EMC|VCE and VMware have added a Hyper-Converged Infrastructure Appliance (HCIA) offering named VxRail to the existing CI portfolio of Vblocks, VxBlocks, VxRacks  (Blocks,Racks,Appliances).  


Vxrail1VxRail is built on a modular scale out clustering architecture that comprises of appliances (Base building block) where each appliance can house up to 4x industry standard x86 hardware compute nodes (four independent ESXi hosts) inclusive of storage. The appliance has a small footprint which is consuming only two rack units ‘2U’ in height, thus we will use the term ‘2U4N’ as abbreviation for the rack space and compute node count within the appliance. With the initial launch (Q1 2016) VxRail will have the ability to scale up to 8x appliances allowing for a total of 32x compute nodes (the Q2 VxRail release will allow for twice these scaling counts allowing for up to 16x Appliances resulting in a max total of 64 nodes in a VxRail cluster).

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