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Troubleshooting vSphere Storage

Troubleshooting vSphere Storage [Kindle Edition]

Mike Preston

Kindle-Preis: EUR 12,97 Inkl. MwSt. und kostenloser drahtloser Lieferung über Amazon Whispernet

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In Detail

Virtualization has created a new role within IT departments everywhere; the vSphere administrator. vSphere administrators have long been managing more than just the hypervisor, they have quickly had to adapt to become a ‘jack of all trades’ in organizations. More and more tier 1 workloads are being virtualized, making the infrastructure underneath them all that more important. Due to this, along with the holistic nature of vSphere, administrators are forced to have the know-how on what to do when problems occur.

This practical, easy-to-understand guide will give the vSphere administrator the knowledge and skill set they need in order to identify, troubleshoot, and solve issues that relate to storage visibility, storage performance, and storage capacity in a vSphere environment.

This book will first give you the fundamental background knowledge of storage and virtualization. From there, you will explore the tools and techniques that you can use to troubleshoot common storage issues in today’s data centers.

You will learn the steps to take when storage seems slow, or there is limited availability of storage. The book will go over the most common storage transport such as Fibre Channel, iSCSI, and NFS, and explain what to do when you can’t see your storage, where to look when your storage is experiencing performance issues, and how to react when you reach capacity. You will also learn about the tools that ESXi contains to help you with this, and how to identify key issues within the many vSphere logfiles.


This is a step-by-step example-oriented tutorial aimed at showing the reader how to troubleshoot a variety of vSphere storage problems, and providing the reader with solutions that can be completed with minimal effort and time in order to limit damage to work.

Who this book is for

If you are a vSphere administrator, this is the book for you. This book will provide you with 'need to know' information about the various storage transports that ESXi utilizes, the tools and techniques we can use to identify problems, and the fundamental knowledge and steps to take to troubleshoot storage-related issues. Prior knowledge of the VMWare environment is assumed.

Über den Autor und weitere Mitwirkende

Mike Preston

Mike Preston is an IT professional and an overall tech enthusiast living in Ontario, Canada. He has held all sorts of IT titles over the last 15 years including Network Technician, Systems Administrator, Programmer Analyst, Web Developer, and Systems Engineer in all sorts of different verticals, from sales to consulting. Currently, he is working as a Systems Analyst supporting the education market near his home in Belleville, Ontario.

Mike has always had an intense passion for sharing his skills, solutions, and work with various online communities, most recently focusing on the virtualization communities. He is an avid blogger at and participates in many discussions on Twitter (@mwpreston). It's his passion for sharing within the virtualization community which has led to Mike receiving the vExpert award for 2012 and 2013.

Mike has presented at VMworld, VMUGs, and various virtualization conferences on numerous times both as a customer and an overall evangelist and has published different whitepapers and articles for various tech websites. His commitment to giving back to the community has resulted in his most recent venture of becoming a Toronto VMUG co-leader. He is a VMware Certified Professional in Datacenter Virtualization on both Version 4 and 5 of vSphere and is currently pursuing his VCAP5-DCA, which he hopes to accomplish by 2014.


  • Format: Kindle Edition
  • Dateigröße: 7189 KB
  • Seitenzahl der Print-Ausgabe: 150 Seiten
  • Verlag: Packt Publishing (20. November 2013)
  • Verkauf durch: Amazon Media EU S.à r.l.
  • Sprache: Englisch
  • ASIN: B00GTE1RW6
  • Text-to-Speech (Vorlesemodus): Aktiviert
  • X-Ray:
  • Amazon Bestseller-Rang: #87.765 Bezahlt in Kindle-Shop (Siehe Top 100 Bezahlt in Kindle-Shop)

  •  Ist der Verkauf dieses Produkts für Sie nicht akzeptabel?


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Die hilfreichsten Kundenrezensionen auf (beta) 5.0 von 5 Sternen  3 Rezensionen
3 von 3 Kunden fanden die folgende Rezension hilfreich
5.0 von 5 Sternen A must-have reference for vSphere Admins 28. Dezember 2013
Von Tim Antonowicz - Veröffentlicht auf
Format:Kindle Edition
In my 10+ years of managing and designing vSphere environments, I have come across a few books that should be on the desks of every vSphere Administrator. You should not be caught without a copy of Mastering VMware vSphere by Scott Lowe and Nick Marshall, VMware vSphere Design by Scott Lowe and Forbes Guthrie, and vSphere Clustering Deepdive by Duncan Epping and Frank Denneman. Mike Preston's Troubleshooting vSphere Storage could easily be added to the list.
While the book is only 5 chapters long, it is organized in a logical fashion that not only allows for easy reading, but quick bookmarking. The first chapter gives an overview of how storage is organized within virtual environments. It lays out the framework of storage organization within vSphere and how it relates to the physical world of servers, networks, and shared storage. Some basic information is introduced for the novice, followed by more detailed explanations of how the pieces interact. The usual 'alphabet soup' of acronyms doesn't detract from the layout and keeps the reader on track. With this foundation in place, it allows for the other chapters to flow in an organized fashion.
The following chapters outline which tools to use to analyze your storage, where to look for problems and how to identify them. Common problems such as contention, capacity, and overcommitment are identified for the reader and several tips are given to show not only what these problems will look like in your environment but also how to identify and resolve them.
The three appendices are the 'Crown Jewels' of the book. Appendix A contains a list of your most common storage troubleshooting steps, followed by the commands and procedures you will need to take in order to eliminate each one. Knowing which questions to ask are good, but having the commands at your fingertips when you need them can be invaluable when problems arise. Preston has saved your bacon with this section. Appendix B lists out all of the ESXTOP commands and functions, which ones you will need for various issues, and how to use them. This will save time and frustration for those SysAdmins that don't frequently use the tool. And finally, Appendix C lists out all of you iSCSI error codes. This is something that most of us will seldom need for day-to day administration. However, that one or two times when you are scratching your head trying to navigate out of a difficult situation, it can save critical time.

Troubleshooting vSphere Storage is a great reference for any vSphere SysAdmin. Not only does it outline an excellent troubleshooting methodology for your environment, but also lays down a strong background for readers to understand just why storage is important for a healthy vSphere design. I would recommend this book to anybody that manages vSphere as well as Storage admins that need to support vSphere.

Tim Antonowicz
Principal Architect
VCDX 112
2 von 2 Kunden fanden die folgende Rezension hilfreich
5.0 von 5 Sternen excellent book about storage related know-how and issue analysis 30. Dezember 2013
Von Andras Herceg - Veröffentlicht auf
Format:Kindle Edition
Storage is one of the most important key area in the virtualization, so it is essential and significant to know how it connected to another areas, understand how it works, how can you troubleshoot storage related availability, performance, space, other issues. The author Mike Preston did a great job with his book "Troubleshooting vSphere Storage".

The five main chapters covers the most important areas. In the 1st section describes the storage technologies, file systems, PSA, PSP, SATP: the base knowledge. The 2nd chapter has the tools which can be used during an issue investigation: esxtop, charts, reports, maps, logs, views. 3rd chapter writes about LUN masking, numbering, resignaturing, FC/iSCSI/NFS visibility, permissions, authentication, storage related esxcli commands. The 4th chapter covers the contention and performance issues: DAVG/KAVG/GAVG latency (and thresholds), IOPS+RAID (how to design), OS/HBA/LUN queues. The last 5th chapter is about the capacity, and overcommitment: think/thick VMDKs, thin provisioning on SAN (LUN) level, snapshots, swap, monitoring VMFS usage, sDRS.

There are three more appendices, which are really useful toolkit for analyzing storage issues: troubleshoot steps, esxtop in-depth, and interpreting iSCSI error codes.

The book is not a long one, has only 150 pages. easy-to-understand, logical, has many screenshots, diagrams, charts for illustrating.
One problem: the book is a bit short, it could have been longer. There are several topics which would deserve more. And a second: When I was preparing to my VCAP5-DCA exam, the book was not yet exists, it would have helped to me a lot at that time. Anyway I used some other books, such as I would also recommend to check out the "VMware vSphere 5 Clustering Technical Deepdive" by Duncan Epping and Frank Denneman

I would recommend this book to especially vSphere admins, but it can useful for vSphere architects as well. If you are managing vSphere infrastructure for a while, and you want to dig a little deeper in storage area, it is a must read book for you.
1 von 1 Kunden fanden die folgende Rezension hilfreich
5.0 von 5 Sternen Great Resource for any VMware Administrator! 29. Januar 2014
Von Josh Atwell - Veröffentlicht auf
Format:Kindle Edition
As a virtualization administrator for various organizations my biggest skills gap was in troubleshooting storage issues in my environments. Most of the time you're limited to VMware KBs (which are great), blog posts, or trying to work through various help files. What we have always lacked was a comprehensive resource that can provide a strategy, an outline of tools, and an easy reference. Recently I got the opportunity to read this book and in fact used it to repair to issues in my lab.

I particularly like the appendices that provide Troubleshooting steps, a breakdown of statistics for esxtop, and iSCSI error codes. The chapters themselves also provide a well structured gathering of valuable information. Mike puts together chapters on
1. storage concepts
2. Tools used for troubleshooting and managing storage in vSphere
3. Troubleshooting storage visibility
4. Troubleshooting storage contention
5. Troubleshooting capacity and overcommit

Each chapter provides a wealth of information and often procedures for configuring storage in vSphere environments.

I particularly enjoyed the Tip sections located throughout the chapters. These breakout segments provide a side conversation to the topic at hand. Often these Tip sections would address questions you may have while you're consuming the chapter.

All in all I give this book two thumbs up and a three sighs of relief. I'm sure any VMware administrator who picks it up will gain some valuable tidbits, as well as an excellent consolidated reference document for troubleshooting and understanding storage in their environment.
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