Everything you always wanted to know about VDI but were afraid to ask (no, it's not an STD)

All you need to make virtual desktops go

Providing a secure and efficient Helpdesk

Scenario 1: Designing for a knowledge worker

Consider for a moment the standard "knowledge worker": someone on the end of a string typing away into a word processor, answering instant messages and occasionally browsing the web. If you hand him or her a non-persistent desktop then update storms over the network aren't an issue; the only real storage traffic you're going to see is during logon and logoff.

Here, write caches – be they at the array or host-based – are your best friend. You can fill up the SSDs in the write caches during logon and logoff and they can sit there and drain to the storage for the rest of the day. This is the exact scenario in which they excel. Atlantis' ILIO, PernixData's FVP, hybrid storage arrays (Tintri, Tegile, Nimble) and server SANs (Maxta, Nutanix, VSAN, etc) could all be of use here.

VDI Knowledge Worker Graph

Boot storms make for spiketacular graphs

This isn't to say that other storage technologies won't have an effect. Host-based read caches (VMware's vFlash, and Proximal Data's AutoCache) are an example of a technology that will be of some help handling the logon/logoff spikes, even if not quite so much as other write cache solutions. Still, read caches are comparatively cheap and can be slotted into existing infrastructure. As such they are also worth a look for this scenario.

If all your users log on at the exact same time then write caches will pay for themselves in short order; they will prevent your staff from sitting and waiting for their desktop to appear. If, however, your staff logon in a somewhat staggered fashion over the course of an hour then you can probably get away with a host-based read caching solution and save yourself a ton of money.

Deciding what to use becomes a "bang for your buck" calculation. This is where understanding your users and their use patterns will make a big difference. How much are you willing to spend, and what kind of logon/logoff performance do you really require?

Providing a secure and efficient Helpdesk


Secure remote control for conventional and virtual desktops
Balancing user privacy and privileged access, in accordance with compliance frameworks and legislation. Evaluating any potential remote control choice.
Saudi Petroleum chooses Tegile storage solution
A storage solution that addresses company growth and performance for business-critical applications of caseware archive and search along with other key operational systems.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.
Providing a secure and efficient Helpdesk
A single remote control platform for user support is be key to providing an efficient helpdesk. Retain full control over the way in which screen and keystroke data is transmitted.