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Performance Monitor ReportingRSS

Storage Performance Configuration and Reporting

Using a new tool to discover old problems. Observations of PernixData FVP

It is interesting what can be discovered when storage is accelerated. Virtual machines that were previously restricted by the underperforming arrays now get to breath freely.  They are given the ability to pass storage I/O as quickly as the processor ...
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Xinorbis – Free Windows-based data storage analyser

Xinorbis is a completely FREE, powerful Windows-based data storage analyser. It analyses a hard drive, folder, USB disk or any other attached storage system and gets valuable information on the contents and distribution of files. Xinorbis uses a soph ...
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Hunting down unnecessary I/O before you buy that next storage solution

Are legacy processes and workflows sabotaging your storage performance? If you are on the verge of committing good money for more IOPS, or lower latency, it might be worth taking a look at what is sucking up all of those I/Os. In my previous posts about ...
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VMUG Belgium – Storage Performance Baselining Presentation

During the VMUG meeting I attended a session presented by Eric de Witte of EMC. Eric talked about Storage Performance Baselining. Eric presented had some good content. A short resume of this session:... The presentation of Eric de Witte is available on V ...
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Latest Nexenta Testing Results

So I have been running my new Nexentastor CE storage for a little more than a month now and wanted to run another IO test real quick as a sanity check. So I setup the http://labs.vmware.com/flings/io-analyzer href="http://labs.vmware.com/flings/io-analyze ...
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Latest SPECsfs2008 results NFS vs. CIFS – chart-of-the-month

We return to our perennial quest to understand file storage system performance and our views on NFS vs. CIFS performance. As you may recall, SPECsfs2008 believes that there is no way to compare the two protocols because CIFS/SMB is “statefull” and NFS ...
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Nexenta Performance Testing No-SSD/SSD

In this post I will be testing Disk IO without SSD for L2ARC and ZIL/SLOG and then again with SSD for L2ARC and ZIL/SLOG. I will be using the VMware I/O analyzer from here. The SSD drives I will be using are the Intel 520 120GB drives. We will see what th ...
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Information regarding vSphere storage device latency performance metrics

This article provides information regarding storage device latency performance metrics.

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Testing Multiple Workloads with the VMware I/O Analyzer

It’s common to want to perform a benchmark or workload test on a newly acquired storage array before it goes into production. Typically, this involves the use of an IO load testing tool, and hopefully includes several workloads that accurately generate a ...
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Cool Tool - Video: Storage Explorer (Free Utility)

Storage Explorer assesses storage performance and capacity views across datastores and VMs that helps VM admins to get better visibility of their storage environment. Storage Explorer, a utility within the vOPS Server Explorer freeware suite, displays sto ...
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vSphere 5.1 IOPS Performance Characterization on Flash-based Storage

At VMworld 2012 we demonstrated a single eight-way VM running on vSphere 5.1 exceeding one million IOPS. This testing illustrated the high end IOPS performance of vSphere 5.1. In a new series of tests we have completed some additional characterization of ...
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Set Your MaxHWTransferSize for VMware vSphere Hosts on VMAX

I finally got around to trying the new settings for MaxHWTransferSize on my VMAX connected vSphere hosts, and it really is a shocking performance boost when doing Storage vMotions. Basically we're telling the VAAI hardware assist to use 4x larger chunks ...
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Best practices for performing storage performance tests within a virtualized environment

This article provides best practices for performing a storage performance test within a virtualized environment while: Eliminating the volume caching from within the guest operating system Measuring the performance of different I/O sizes Helping to i ...
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vSphere 5.1 SSD Monitoring reporting N/A for certain fields

One of the new features of vSphere 5.1 was the SSD monitoring and I/O Device Management features which I discussed in this post. I was doing some further testing on this recently and noticed that a number of fields from my SSD were reported as N/A. For ex ...
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Managing Storage Performance in Virtualized Environments

Download a free 30-day trial of SolarWinds Storage Manager now: bit.ly The drive to virtualization causes resource contention problems throughout the infrastructure. These problems are especially difficult to find and diagnose when related to your network ...
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EMC VNXe Performance Analysis with PowerShell

Hello again, It has been a long time, but the day job takes precedence. Recently, I have been working on a little pet project I thought I would share. The EMC VNXe is a great entry level storage array which has been popular with SMB and remote office bran ...
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Storage I/O Performance on vSphere 5.1 over 16Gb Fibre Channel

At the vSphere 5.1 release time frame, the 16Gb Fibre Channel fabric and 16Gb FC cards have become generally available. The release of the 16Gb FC driver on the VSphere platform can now take full advantage of the new 16Gb FC HBA and thus have better stora ...
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Analyze I/O workloads to determine storage performance requirements

Disk latency represents the amount of elapsed time to pass an I/O request from the vmkernel to the physical storage array. Excessive latency can occur when there are a large number of simultaneous I/O requests against a particular host or storage subsyste ...
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