- Taschenbuch: 150 Seiten
- Verlag: Packt Publishing (20. November 2013)
- Sprache: Englisch
- ISBN-10: 1782172068
- ISBN-13: 978-1782172062
- Größe und/oder Gewicht: 19 x 0,9 x 23,5 cm
- Durchschnittliche Kundenbewertung: Schreiben Sie die erste Bewertung
- Amazon Bestseller-Rang: Nr. 589.336 in Fremdsprachige Bücher (Siehe Top 100 in Fremdsprachige Bücher)
Troubleshooting vSphere Storage (Englisch) Taschenbuch – 20. November 2013
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Über den Autor und weitere Mitwirkende
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 blog.mwpreston.net 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.
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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.
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.