Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

Citrix, my storage Performance Preoccupation

Posted on 2014-02-14
4
Medium Priority
?
572 Views
Last Modified: 2014-02-15
Hello everyone ...
Currently I have a new virtualization platform from Citrix, which consists of the following:
- Nine servers Citrix Xenserver 6.2
- 46 VMs with Citrix XenApp 6.5
- 54 Vms VDI desktop
- FC SAN Storage

Currently, Xenserver servers are in a Pool, and share 3 500GB Luns for Write Cache of XenApp and VDI Vms.
The volume was created on RAID 6, and assume that I will support approx. 48000 IOPs, required for my virtualization solution.
I've been checking the speed of access to the system disk, using the citrix perfomanceVM, and I found worrying about the graphics performance of my storage. These measurements were taken with only 4 VMs running.
Shipping graphs I took each for a one minute interval.
Could help analyze graphs, and tell me if it is really my worry valid?

Thank you all.
Random-Read.PNG
Random-Write.PNG
Sequential-Read.PNG
Sequential-Write.PNG
0
Comment
Question by:omaguirre
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
4 Comments
 
LVL 39

Expert Comment

by:Philip Elder
ID: 39860826
It's really hard to make heads or tails of what was posted.

Try this: http://bit.ly/18iwrL0

That is SQLIO, a utility that Microsoft put out to test a disk subsystem to the max.

Philip
0
 
LVL 17

Expert Comment

by:Gerald Connolly
ID: 39861042
48K IOPS sustained is going to mean a lot of HDDs probably somewhere between 350 & 480 depending on the type of disk.
Of course if you use SSDs then you only need a few to hit this number
0
 
LVL 30

Accepted Solution

by:
Duncan Meyers earned 2000 total points
ID: 39861047
The issue here is you're measuring bandwidth (MB/sec) but you need to be testing for Throughput (IOPS).

Bandwidth-wise, it's an absolute belter with 480MB/sec write and 293MB/sec read (they're BIG  numbers). The lower numbers for random read and write performance looks about right-ish, but they're not really relevant. Random workloads are all about IOPS, not MB/sec, and virtualised workloads produce highly random I/O patterns. I'd recommend re-running the random tests and capture the IOPS numbers instead of MB/sec and see how they look. RAID 6 is typically not random I/O friendly, but that depends on what the array is as a number of vendors have optimised for RAID 6 with SSD storage.
0
 
LVL 30

Expert Comment

by:Duncan Meyers
ID: 39862019
Thanks! Glad I could help.
0

Featured Post

Windows Server 2016: All you need to know

Learn about Hyper-V features that increase functionality and usability of Microsoft Windows Server 2016. Also, throughout this eBook, you’ll find some basic PowerShell examples that will help you leverage the scripts in your environments!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The question appears often enough, how do I transfer my data from my old server to the new server while preserving file shares, share permissions, and NTFS permisions.  Here are my tips for handling such a transfer.
A look at what happened in the Verizon cloud breach.
How to install and configure Citrix XenApp 6.5 - Part 1. In this video tutorial we have explained step by step installation of Citrix XenApp 6.5 Server on Windows Server 2008 R2 is explained in this video. We have explained the difference between…
This demo shows you how to set up the containerized NetScaler CPX with NetScaler Management and Analytics System in a non-routable Mesos/Marathon environment for use with Micro-Services applications.

597 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question