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Go to SolutionVirtual Provisioning(Best Performance) in Vmax
We have a VM infrastructure where we are supposed to provide luns of large sizes ranging from 1.2TB - 2TB.
Now my question is:
- How many hypers should i choose to form my Meta Device? Which option would provide me greater performance(eg: 30 x 69GB or 16 x 128GB or 8 x 240GB or any other option )?
- Also i would like to understand how this configuration can be depicted, keeping performance in mind ?
I am trying to understand whenever some one asks me to provide a lun size of 1.2 TB or 1.5 TB or 2 TB, how would i select my options (since symmetrix provides me with a range of options to form meta devices) for the best performance.
Also if some one can help me out with any white papers which explains best practice for virtual provisioning.
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Posted July 30th, 2014 08:00
In Symmetrix, hypers or splits are terms usually used to refer to segments on a physical disk drive. With VP, your meta members are not associated directly with the backend configuration.
In general, you get the maximum FA performance from a given LUN with about 32 meta members. 16 in most cases is enough.
My best practices for VMAX from EMC World
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Posted July 30th, 2014 09:00
is it better to create a stripped meta if performance is our concern ? i.e if we have no plans to expand the dev .
if performance is not my priority , can I simply create stripped metas for everything ?
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Posted July 30th, 2014 09:00
Yes! If there is no need for expansion, always do striped metas.
See my best practices presentation at about 48 minutes into it for the meta discussion.
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Posted July 30th, 2014 10:00
The link I posted should have opened the session, but in a pop-up.
Tech sessions, sort by most popular or most liked, and it should be the first one.
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Posted July 30th, 2014 10:00
What tab am I looking for ?
Tech Sessions
Federation
Build-A-Hybrid-Cloud
Area 52
Area 53
Demos & 360
I can get into the site but not sure what video to watch .
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Posted July 30th, 2014 12:00
Thanks , got it . Watching it now
.
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Posted July 30th, 2014 18:00
For virtual provisioning best practices, you could refer to this document:
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Posted July 31st, 2014 01:00
Thanks a lot Quincy. That was an excellent presentation.
However i still need to confirm something, if you can help me out with that.
1> How exactly are the "cache slots" booked for thin devices?
2> How to choose how many FAs to allocate for a particular host. What are the things that we should keep in mind?716
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Posted July 31st, 2014 02:00
The general best practice of FA configuration is "go wide before go deep". We always hope to balance FA workloads, 4 FA ports are better than 2 for sure, with better performance and better fault tolerance. For example, if you have 2 busy FA ports. it could be bottleneck, so better to configure 4 or more.
Besides, PowerPath is designed for balance and failover.
Quincy561
1281 Posts
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Posted August 1st, 2014 07:00
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2072070
Before adding paths or moving VMs, I would change this parameter if it is not already.
If you still have issues, I think going to 6 or 8 paths would be a better option than splitting the servers. To me it would be easier to manage.