Introducing App Volumes 2.10

Post by Eric Sloof (thank you)

VMware App Volumes is a real-time application delivery system that enables Enterprise IT to instantly deliver applications with complete application lifecycle management. VMware App Volumes provides seamless end-user experience while reducing infrastructure and management costs.

Read on here

VMware VSAN for ROBO Two Node 10 GbE cross-connect support

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Good post by Vladan Seget (thank you)

I somehow ignored this information but I think that it’s very useful to share, especially if you’re navigating the SMB or very SMB sector. In fact VMware VSAN for ROBO Two Node 10 GbE cross-connect support. So you have the possibility to cross connect ROBO nodes, via low cost 10GbE option and have a great performance because you’ll have dedicated VMkernel interface for VSAN traffic.

Read on here

What happens at which vSphere memory state?

Good post by Duncan Epping (thank you)

I’ve received a bunch of questions from people around what happens at each vSphere memory state after writing the article around breaking up large pages and introducing a new memory state in vSphere 6.0.

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vMotion (Huge) Enhancements in vSphere 6

Good Post by Romain Decker (thank you)

My first contact with vMotion goes back to a demo in 2004. I can still remember how the presenter connected to a Windows VM in RDP, launched a movie, migrated the VM to another host and powered off the 1st ESX…and the movie was still running! :)

VMware vSphere live migration, or vMotion, allows you to move an entire running virtual machine from one physical server to another, without downtime.

Read on here

Virtualisation – Solving the Storage Problem

Good post by Chris M Evans (thank you)

One of the interesting take-aways from VMworld EMEA this year was the number of companies looking to solve the “storage problem” in virtualisation.  I’m sure many of our traditional storage vendors will say that no problem exists, however there is a perception that storage, in particular Fibre Channel, is a costly solution and requires expensive administrators to keep tidy and in place.

Read on here

Best Practices SAN Solution Design for VMware VSphere ESXi

rb170x32 – DRAFT – Last Update: 13.August 2013

Best Practices SAN Solution Design for VMware VSphere ESXi

In this book we describe recommendations based on an IBM b-type Storage Area Network environment that is utilizing VMware vSphere ESXi. We discuss the hardware and software and the unique features that they bring to the marketplace. We then highlight those features and how they apply to the SAN environment, and the best practices for ensuring that you get the best out of your SAN.

For background reading we recommend these books:

Introduction to Storage Area Networks and System Networking, SG24-5470
IBM System Storage SAN Volume Controller Best Practices and Performance Guidelines, SG24-7521
IBM System Storage SAN Volume Controller and Storwize V7000 Replication Family Services, SG24-7574
Implementing the IBM System Storage SAN Volume Controller V6.3, SG24-7933
IBM SAN Volume Controller Stretched Cluster with PowerVM and PowerHA, SG24-8142
Implementing the IBM SAN Volume Controller and FlashSystem 820, SG24-8172
IBM System Storage DS8000 Copy Services for Open Systems, SG24-6788
IBM System Storage DS8000: Host Attachment and Interoperability, SG24-8887

This book is aimed at pre- and post-sales support, system and storage administrators.

How to avoid potential loss off access to XIV Storage Systems running microcode versions 11.0.x or 11.1.x – With VMware environments connected over iSCSI

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Flash (Alert) – Reference #:S1004406

Abstract

Potential loss of access to XIV Storage Systems running microcode versions 11.0.x or 11.1.x – with VMware environments connected over iSCSI, can be avoided by upgrading to version11.2.0 and above. The recommended version to upgrade to in this regards, is version 11.2.0.b that was released in May 15, 2013

Content

Symptom:

  1. Loss of Access (LOA) to one or many LUNs mapped by VMware environment
  2. LUNs mapped by hosts other than VMware may remain available

Root Cause:

  1. On rare occasion ATS (Atomic Test & Set) cmd may become stuck at XIV SCSI target layer
  2. Subsequent attempts by ESX host to abort the stuck ATS are ignored by XIV due to
    “pending” C&W transaction. This deadlock eventually results in Loss of access.

Exposed population:

  • Gen 3 systems running versions 11.0.x or 11.1.x with VMware ESX (4.x, 5.x) attached by iSCSI

Fix from 11.2.0

  • A timeout for stuck IO was added to XIV iSCSI stack to prevent LOA.
  • The recommended version to upgrade to in this regards, is version 11.2.0.b that was released in May 15, 2013

Mitigation
Until the upgrade is done and to prevent the problem from occurring disable VAAI on ESX

Exploring VMware vSphere API for Array Integration on the IBM Storwize family

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The IBM Storwize product family includes support for the VMware vSphere Storage API for Array Integration block primitives. The vSphere Storage API for Array Integration (VAAI) block primitives, such as Atomic Test and Set, Extended Copy, and Write Same enable certain VMware vSphere storage functions to be offloaded from the vSphere ESX or ESXi host to the VAAI-enabled IBM Storwize family storage system. Functions, such as virtual machine (VM) disk creation, VM cloning, and VMware vMotion are able to run on the IBM Storwize family storage system, eliminating resource usage on the vSphere ESX or ESXi host. This white paper provides a guide for VAAI utilization on the IBM Storwize family and an examination of the benefits.

Get the Whitepaper here