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Wednesday, July 24, 2013

How to downgrade IBM V7000 (Storwize) firmware

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Sometimes, especially when you do a problem management, you have a need to downgrade firmwares on some system components. I have such need ...
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Sunday, July 14, 2013

ESX host remote syslog configuration

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For remote CLI you can use vMA or vCLI. Here is the example how to configure ESX host (10.10.1.71) to send logs remotely to syslog server l...
Tuesday, July 09, 2013

Excellent article: "Anatomy of an Ethernet Frame"

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Trey Layton (aka EthernetStorageGuy) wrote excellent article about MTU sizes and Jumbo Frame settings. The article is here . In the article...

DELL Open Manage Essentials 1.2 has been released

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Dell OpenManage Essentials is a 'one to many' console used to monitor Dell Enterprise hardware. It can discover, inventory, and mon...
Tuesday, July 02, 2013

How to change default path selection policy for particular storage array?

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Sometimes the firmware in storage array has some problems and you have to "downgrade" functionality to achieve operable system. ...

Do you want to test Heavy Load? Try Heavy Load tool.

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Bring your PC to its limits with the freeware stress test tool HeavyLoad. HeavyLoad puts your workstation or server PC under a heavy load a...
Sunday, June 30, 2013

Simple UNIX Shell Script for generating disk IO trafic

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Here is pretty easy unix shell script for disk I/O generation. #!/bin/sh dd_threads="0 1 2 3 4 5 6 7 8 9" finish () {   kil...
Thursday, June 27, 2013

Calculating optimal segment size and stripe size for storage LUN backing vSphere VMFS Datastore

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Colleague of mine (BTW very good Storage Expert) asked me what is the best segment size for storage LUN used for VMware vSphere Datastore (...
Wednesday, June 26, 2013

IOBlazer

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IOBlazer  is a multi-platform storage stack micro-benchmark. IOBlazer runs on Linux, Windows and OSX and it is capable of generating a hig...
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PXE Manager for vCenter

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PXE Manager for vCenter  enables ESXi host state (firmware) management and provisioning. Specifically, it allows: Automated provisioning...

vBenchmark

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vBenchmark provides a succinct set of metrics in these categories for your VMware virtualized private cloud. Additionally, if you choose ...
Tuesday, June 25, 2013

How to create your own vSphere Performance Statistics Collector

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Statsfeeder is a tool that enables performance metrics to be retrieved from vCenter and sent to multiple destinations, including 3rd party...
Monday, June 24, 2013

vCenter Single Sign-On Design Decision Point

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When you designing vSphere 5.1 you have to implement vCenter SSO. Therefore you have to make design decision what SSO mode to choose. The...
Thursday, June 20, 2013

Force10 Open Automation Guide - Configuration and Command Line Reference

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This document describes the components and uses of the Open Automation Framework designed to run on the Force10 Operating System (FTOS), i...
Wednesday, June 19, 2013

Operational Limits for SRM 5.1 and vSphere Replication 5.1

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Link to VMware KB article 2034768
Tuesday, June 18, 2013

How to – use vmkping to verify Jumbo Frames

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Here is nice blog post about Jumbo Frame configuration on vSphere and how to test it works as expected. This is BTW excellent test for Ope...

Architectural Decisions

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Josh Odgers – VMware Certified Design Expert (VCDX) #90 is continuously building database of architectural decisions available at   http://...
Monday, June 17, 2013

PowerCLI One-Liners to make your VMware environment rock out!

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Christopher Kusek wrote excellent blog post about PowerCLI useful scripts fit single line. He call it one-liners. These one-liners can sign...
Tuesday, June 04, 2013

Software Defined Networking - SDN

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SDN is another big topic in modern virtualized datacenter so it is worth to understand what it is and how it can help us to solve real data...
Saturday, May 25, 2013

PernixData: New storage statusquo is comming

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Storage SME's knows for ages that storage design begins with performance. The storage performance is usually much more important then c...