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Storage Management

Configuring QNAP TS-670 iSCSI + vSphere 5.5

It’s time for some SAN testing again! This time I had the chance to connect the QNAP TS-670 to my lab. The TS-670 is a 6 bay NAS solution from QNAP targeted at SMB users, and includes some cool (enterprise level) features:....

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PernixData FVP in my lab. Part 1 – Preparation (Francesco Bonetti)

In this days I’m involved in the process of testing PernixData FVP in my lab. FVP is a software layer that need to be installed on the Hypervisor.It use SSD disks or PCIe Flash storage as a Read and Write cache in between the host and the storage.PernixD ...
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MegaCLI working examples cheat sheet LSI Megaraid

MegaCLI is a pain… a real pain. I’m not a fan of the syntax, it’s not easily readable, did I say it was a pain? Well, our OCP Knox Units are connected via the LSI MEGARAID SAS 9286CV-8E (SGL) controller, so I’ve been using MegaCLI quite a bit lately ...
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[Module 6 - Part 1] VMware vSphere - Configuring and Managing Virtual Storage - YouTube 31:30

1-on-1™ Live Virtual Classroom Training on "VMware vSphere - Configuring and Managing Virtual Storage" by Koenig Solutions

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How to Configure VMware Storage I/O Control (SIOC) (Petri IT Knowledgebase)

In this post I wanted to talk about one of the under-utilized cool features available in vSphere: Storage I/O Control (SIOC) and there are just not enough customers looking at this or using it right now. Read on to find out if SIOC could help you in your ...
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Change in Permanent Device Loss (PDL) behavior for vSphere 5.1 and up?

Yesterday someone asked me a question on twitter about a whitepaper by EMC on stretched clusters and Permanent Device Loss (PDL) behavior. For those who don’t know what a PDL is, make sure to read this article first.  This EMC whitepaper states the f ...
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Automating the IOPS setting in the Round Robin PSP on ESXi VMware

A number of you have reached out about how to change some of the settings around path policies, in particular how to set the default number of iops in the Round Robin path selection policy (PSP) to 1. While many of you have written scripts to do this, whe ...
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TechEd: Storage Management with VMM 2012 R2 (MDC-B344)

This session focused on both the platform storage enhances in Windows Server 2012 R2 in addition to VMM 2012 R2. Microsoft was very up front that the 2012 release baked in a huge amount of technology into the platform (OS), but not all of it was exposed t ...
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Getting and Setting Path Selection Policies with PowerCLI

A colleague I work with was looking for a script that would list all disk devices on ESXi hosts that were not set to Round Robin. After this, he wanted to be able to set all of these to the Round Robin Path Selection Policy (PSP). The two tasks can actual ...
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How Link Aggregation Affects vSphere Teaming Policies with Converged Infrastructure (Wahl Network)

The use of a Link Aggregation Group (LAG) with Link Aggregation Control Protocol (LACP) is rather standard with converged infrastructure northbound uplinks. This grants additional link redundancy and avoids the need for minor levels of interruption in the ...
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PowerCLI Script to set default SATP and PSP (Virtually Prepared)

I’ve just uploaded a new script that updates all ESXi5 hosts in a cluster with a default SATP (Storage Array Type Plug-in) then scans through all LUNs attached to the host(s) based on LUN ID provided changing the PSP (Path Selection Plug-in) to preferred ...
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Using PowerCLI to set multipath policy based on array model

Going through all of your hosts and setting your multipathing policy manually through either the C# or the vSphere Web Client can certainly be a trying task. Sure, if you have 2 or 3 hosts it might be alright, but anything above that and things start to g ...
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Jumbo Fibre Channel Frames

In the world of Ethernet, jumbo frames (technically any Ethernet frame larger than 1,500 bytes) is often a recommendation for certain workloads, such as iSCSI, vMotion, backups, basically anything that doesn’t communicate with the Internet because of MTU ...
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In the Storage Array or in VMFS? Thin Provision & VAAI

VMware provides a rich menu of storage services, which can be used to enhance commodity storage systems. However, VMware can provide more services for the application if they can offload the cycles that are used for storage services to intelligent storage ...
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Example Architectural Decision – vSphere configuration for handling APD/PDL scenarios

What is the best way to configure the vSphere environment to handle All Paths Down (APD) and Permanent Device Loss (PDL) situations where the environment uses Active/Active (IBM SVC) storage with FC connectivity via a dedicated highly available Storage Ar ...
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Locate WWN from console on ESXi 5.x

Sometimes for urgent cases it can be necessary to obtain the HBA's WWN's to get the storage zoned before the network configurations are done and the hosts are online. On Blade servers, this info can be found on the enclosure OA but for rack mounted server ...
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Is high vSphere storage latency always a bad thing? Part II (viktorious.nl)

A while ago I wrote an article on high storage latency. This article discussed the relationship between the amount of latency and IO blocksize used by the OS running in your virtual machine.

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Seriously, Stop Using Port Channels for vSphere Storage Traffic

While the title is meant to be a bit of a dramatized attention grabber, I do run into a vast majority of situations where someone has configured a set of port channels, also known as an EtherChannel or the more recently popular static-LAG, to a vSphere ho ...
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