Tag Archives: storage

VMFS-5 Heap Size via Nick Fritsch @nfritsch

Nice post Nick, thanks for sharing.


Service Level Agreements (SLAs) – A silent victim in the Consumerization of IT

Last week I was having a discussion with an Infrastructure as a Service (IaaS) provider and one of the questions I left with was how can I integrate your service with my existing internal infrastructure.  My thought was I could build a private-hyrbrid cloud (if that’s not a term yet I own it – my definition of a private-hybrid cloud is being able to provide on demand resources between an internal/traditional company owned data center and an external service provider who can dedicate private resources) between my internal infrastructure and and this vendor to provide on demand infrastructure, scaling and high availability.  This got me to thinking of how I might be able to meet the sometimes unreasonable SLA’s asked of technology groups from the business and further started to wonder why the SLA’s have kept increasing even though IT budgets are being slashed.

I started to think back to meetings between non-technology business leaders (e.g. sales, marketing, finance, etc…) and myself as we discussed what they wanted from IT.  Typically when I am architecting a system or network design one of my first questions is to those business leaders to explain what their expectations are.  On many occasions the answer has been “100% up-time.”  We all know in IT that’s not really reasonable which is why we add-in scenarios about maintenance and vendor bugs not counting against that SLA.  Now, if I am an IT person and my CEO and CFO say they want 100% up-time – well great I can certainly design you a very resilient, high performance infrastructure that can even overcome poor software code to recover from application or system crashes.  One problem typically comes up however – the desire to have 100% up-time does not typically equate to the budget to build that type of infrastructure.  When we are reviewing the design and budget to try and reach that 100% up-time requirement the comment I hear quite often is something along the lines of “Why does it cost so much, Facebook/LinkedIn/other consumer based website never goes down and  I use that for free” or “Why do we have to spend so much on storage?  I can upload all the pictures I want to Facebook  and I use that for free.”  Once you explain that those services you are consuming from Facebook or LinkedIn is not actually their business, their business is big-data, business intelligence and advertising I am typically able to re-focus the meetings on the real needs of the business and not a false expectation based on the perceived up-time of consumer based services and determine a real SLA for various systems and applications.

So while we typically think of the consumerization of IT in terms of BYOD and related needs such as security and monitoring or enterprise social networking, it reaches all the way through the network and infrastructure right into policies, procedures and service level agreements.  Have you had a similar experience when working on your projects or budgets?

VNX Best Practices for Performance by Nick Fritsch (@nfritsch)

Thanks Nick!

Netapp Edge VSA – Rapid Cloning Utility (RCU)


At VMWorld this year Vaughn Stewart from Netapp presented SS1011 &  SPO3339 where he spoke about the release of the Netapp Edge Virtual storage appliance.

This got me quite excited, for many reasons, but the one I will discuss today is the use of the VSA for my test lab. Using the VSA will allow me to test enterprise features, without requiring expensive and noisy equipment in my lab. Sounds good hey!

In this article I will demonstrate Netapp’s Rapid Clone Utility and how it can deploy large numbers of VMs very rapidly, without a storage (I/O and capacity) or compute (Ghz & Ram) overhead.

So before we begin, if your interested in what I have in my lab, please see “My Lab” blog post.

The only difference is I now have the Netapp Edge VSA serving NFS storage to my physical ESXi host , named “pesxi01” as well as…

View original post 1,575 more words

The Necessity for NFS VMkernel Ports Explained

Great IOPS Calculator

Yes I know most of the world already knows about this great IOPS calculator, but want to make sure I don’t forget so here is the link!


VMware View Secure Mobile Desktop Bootcamp Day 3

VMware View Bootcamp Mobile Secure Desktop – Day 3

Overview – Storgae Considerations / Best Practices w/Nimble

Nimble – hybrid iSCSI CASL (Cache Accelerated Sequenial Layout), Tierless

– Setup Nibmle Setup GUI
– Network considerations
– Multi interface – mgmt, iSCSI Discover, iSCSI data, support
– Recommend separate network for mgmt and data
– Data – round robin mpio
– Jumbo Frames for 10G end to end, host-switch-storage
– Perf Policies
– Define policy for VDI
– Block size = 4k
– Caching = Yes
– Compression = Yes

– Host connectivity
– Initiatior group, ESXi hosts/clusters
– Enable vCenter pluging

via CLI on nimble
– vmwplugin –register
–server <vcenter>
–username <user>
–password <password>
via CLI on vCenter
– esxcli storage nmp satp rule add
Makes for easy deployment/volume creation from vSphere

Protection Templates
– sync, snapshots, replication
– consistent application of policy to volumes
– 1 for core inf, 1 for vdi pools
– Efficent storage, managed at volume level or collection level

– Volume collections contain set of volumes with same mgmt properties
500gb to 1tb suggested, reserve 50% for thin provisioning

– Capacity overcommit – thin provision, compression, linked clones

– read req, write req, balacne overall IOPS
– View Storage Accelerator still = cool

VMware Secure Mobile Desktop Bootcamp Day 2

VMware View Bootcamp Mobile Secure Desktop – Day 2

– Storage Tips and Best Practices
– VDI Storage Challenges
– Understand IO requirments
– Assessments
– Solutions

It’s not rocket science…but it might be model rocket science
– Think in terms of performance, not storage (IOPS)
– Size doesnt matter (okay it matters a bit)
– Hard to correct later, PR problem
– Need good user experience, good performance

No one knows average and peak IOPS for desktops, desktops have dedicate spindles
In virtual world, IO is important, must know info

SSD / 6000
15K / 175
10K / 125
7200 / 75
5400 / 50

Continue reading VMware Secure Mobile Desktop Bootcamp Day 2

EMC Replication Manager for Virtualized Environments – Install, Configure, and Run

Cloud Jockey

EMC is well-known for its solutions around protecting data and application. Out of the breadth of EMC’s portfolio I have two favorites:

  • EMC Avamar
  • EMC Replication Manager

In this post I want to show you how you install and configure EMC Replication Manager. Also, I will show you how you can recover a single Virtual Disk (vmdk file) from within EMC Replication Manager. Sounds interesting..?

View original post 217 more words