Solved

Citrix, my storage Performance Preoccupation

Posted on 2014-02-14
4
561 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
  • 2
4 Comments
 
LVL 38

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 16

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 500 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

Comprehensive Backup Solutions for Microsoft

Acronis protects the complete Microsoft technology stack: Windows Server, Windows PC, laptop and Surface data; Microsoft business applications; Microsoft Hyper-V; Azure VMs; Microsoft Windows Server 2016; Microsoft Exchange 2016 and SQL Server 2016.

Question has a verified solution.

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

Exchange server is not supported in any cloud-hosted platform (other than Azure with Azure Premium Storage).
Each year, investment in cloud platforms grows more than 20% (https://www.immun.io/hubfs/Immunio_2016/Content/Marketing/Cloud-Security-Report-2016.pdf?submissionGuid=a8d80a00-6fee-4b85-81db-a4e28f681762) as an increasing number of companies begin to…
This tutorial will walk an individual through the process of installing the necessary services and then configuring a Windows Server 2012 system as an iSCSI target. To install the necessary roles, go to Server Manager, and select Add Roles and Featu…
This Micro Tutorial will teach you how to reformat your flash drive. Sometimes your flash drive may have issues carrying files so this will completely restore it to manufacturing settings. Make sure to backup all files before reformatting. This w…

810 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