Virtualization Blog

Discussions and observations on virtualization.

A Great Time to Take A Look at XenServer Enterprise!

Good afternoon everyone,

As we make our way through the last quarter of the year, I wanted to remind the community of the significant progress the XenServer team has achieved over the last 18 months to make XenServer the awesome hypervisor that it is today!

While many of you have been making the most of your free XenServer hypervisor, I would like to take this opportunity to review just a few of the new features introduced in the latest releases of the Enterprise edition - features that our customers have been using to optimize their application and desktop virtualization deployments.

For starters, we've instrumented automated updates and live patching, features that streamline the platform upgrade process by enabling multiple fixes to be installed and applied with a single reboot and in many cases, no reboot whatsoever, significantly reducing downtime for environments that require continuous uptime.

We've also worked with one of our partners to introduce a revolutionary approach to securing virtual workloads, one that is capable of scanning raw memory at the hypervisor layer to detect, protect and remediate against the most sophisticated attacks on an IT environment. This unique approach provides an effective line of defense against viruses, malware, ransomware and even root kit exploits. What's more, this advanced security technique complements security mechanisms already implemented to further strengthen protection of critical IT environments.

Providing a local caching mechanism within the XenServer hypervisor enables our virtual desktop customers to dramatically improve the performance of their virtual desktops, particularly during boot storms. By caching requests for OS image contents in local resources (i.e., memory and storage), XenServer is able to work with Provisioning Services to stream contents directly to virtual desktops, reducing resource utilization (network and CPU) while enhancing user productivity.

Expanded support for virtual graphics allows our customers to leverage their investments in hardware from the major graphics vendors and enable GPU-accelerated virtual desktops that effectively support graphics-intensive workloads.

Designing, developing and delivering features that bring out the best in virtualization technologies... that's our focus. And thanks to the invaluable insight and feedback provided by this community, will continue to be the driving force behind our innovation efforts.

Interested in evaluating the features described above, click here.

Until next time,

Andy

 

Continue reading
506 Hits
0 Comments

XSO DB for XS 7.1 Closing Down

Attention XenServer community:

Please be advised that, in alignment with our goal of frequent releases and the XSO database supporting one active release to help resolve issues found in that release while simultaneously preparing for the next release, we are closing down the XSO database for 7.1 issues. As such, users are encouraged to move to XS 7.2 and raise any issues they encounter with that release here. Users who wish to remain on the Long-Term Support Release (LTSR) stream are encouraged to visit Citrix.com.

As always, thank you for your support.

Andy

 

Continue reading
1433 Hits
0 Comments

Citrix Announces First Cumulative Update for XenServer 7.1

Citrix has posted a blog announcing the availability of XenServer 7.1 CU1, the first cumulative update for the XenServer 7.1 Long-Term Support Release (LTSR).

CU1 rolls-up all hotfixes released on XenServer 7.1 to date. While there are no new features introduced in this update, a number of additional fixes are included to further enhance and simplify XenApp and XenDesktop environments. Information pertaining to these fixes can be found in the release notes.

Of particular significance, this cumulative update provides customers on Long-Term Support Release (LTSR) 7.1 with the latest platform fixes applicable to v7.1. Unlike Current Releases (CR), which provide access to new features on an almost quarterly basis, Long-Term Support Releases are designed for customers who, possessing the features they need to optimize their XenApp and XenDesktop environments, intend to remain on the LTSR for the foreseeable future. For these customers, using a Long-Term Support Release offers stability - Citrix will support the LTSR for up to 10 years – as well as access to fixes as they become available. You can learn more about the differences between Long-Term Support and Current Releases here.

Wondering if XenServer 7.1 Enterprise edition is right for your organization? Click here to download a free trial version.

Cheers!

Andy

 

Recent comment in this post
Sam McLeod
Great to see a roll-up for all hotfixes for 7.1 to date, it was very painful figuring out what patches to apply and what not to in... Read More
Sunday, 17 September 2017 23:15
Continue reading
1402 Hits
1 Comment

Changes to Hotfixes and Maintenance for XenServer Releases

Changes to Hotfixes and Maintenance for XenServer Releases

XenServer (XS) is changing as a product with more aggressive release cycles as well as the recent introduction of both Current Release (CR) and Long Term Service Release (LTSR) options. Citrix recently announced changes to the way XenServer updates (hotfixes) will be regulated and this article summarizes the way these will be dealt with looking forward.

To first define a few terms and clarify some points, the CR model is intended for those who always want to install the latest and greatest versions, and these are being targeted for roughly quarterly releases. The LTSR model is primarily intended for installations that are required to run with a fixed release. These are by definition required to be under a service contract in order to gain access to periodic updates, known as Cumulative Updates or CUs. The first of these will be CU1. Since Citrix is targeting support for LTSR versions for ten years, this incurs quite a bit of cost over time and is much longer than a general CR cycle is maintained, hence the requirement for active support. The support for those running XS as part of running licensed versions of XenApp/XenDesktop will remain the same, as these CR licenses are provided as part of the XenApp/XenDesktop purchase. There will still be a free version of XenServer and the only change at this point will be that on-demand hotfixes for a given CR will no longer be available once the next CR is released. Instead, updates to quarterly releases will be needed to access and stay on top of hotfixes. More will be discussed about this later on. End-of-life timelines should help customers in planning for these changes. Licensed versions of XenServer need to fall under active Customer Success Services (CSS) contracts to be eligible for access to the corresponding types of updates and releases that fall outside of current product cycles.

 

At a Glance

The summary of how various XS versions are treated looking forward is presented in the following table, which provides an overview at a glance.

XenServer Version

Active Hotfix Cut-Off

Action Required

6.2 & 6.5 SP1

EOL June 2018

None. Hotfixes will continue to be available as before until EOL.

7.0

December 2017

Upgrade or buy CSS.

7.1

December 2017

Upgrade or buy CSS (to stay on the LTSR stream by deploying CU1)

7.2

At release of next CR

Upgrade to latest CR, or buy CSS to obtain 4 months more of hotfixes (and thus skip one CR)

 

In the future, the only way to get hotfixes for XS 7.2 without paying for a CSS will be to upgrade to the most current CR once released. Customers who do pay for CSS will also be able to access hotfixes on 7.2 for a further four months after the next CR is released. This would in principle allow you to skip a release and transition to the next one beyond it.

 

What Stays the Same

While changes are fairly significant for especially users of the free edition of XS, some aspects will not change. These include:

·        There will still be free versions of XenSever released as part of the quarterly CR cycle.

·        The free version of XS can still be updated with all released hotfixes until the next CR becomes generally available.

·        XS code still remains open source.

·        Any hotfixes that have already been released will remain publically available.

·        There will be no change to XS 6.2 through 6.5 SP1. They will only receive security hotfixes at this point, anyway, until being EOLed in June 2018.

 

In Summary 

First off, stay calm and keep on maintaining XS pretty much as before except for the cut-offs on how long hotfixes will be available for non-paid-for versions. The large base of free XS users should not fear that all access to hotfixes is getting completely cut off. You will still be able to maintain your installation exactly as before, up to the point of a new CR. This will take place roughly every quarter. This is a pretty small amount of extra effort to keep up, especially given how much easier updating has become, in particular for pools. Most users would do well to keep up with current releases to benefit from improvements and to not have to apply huge numbers of hotfixes whenever installing a base version; the CR releases will include all hotfixes accumulated up to that point, which will be more convenient.

 

What To Do 

Any customers who already have active CSS contracts will be unaffected by any of these changes. Included are servers that support actively licensed XenApp/XenDesktop instances, who by the way, get all the XS Enterprise features incorporated into the latest XS releases – for all editions of XA/XD. Customers on XS 7.0 and 7.1 LTSR who have allowed their software maintenance to lapse and have not renewed/upgraded to CCS subscriptions should seriously consider that route.

Citrix will provide additional information as these changes are put into place.

Continue reading
1341 Hits
0 Comments

XenServer 7.2 now available!

Hello XenServer community!

The XenServer team is proud to announce the release of version 7.2, which includes an array of improvements that further simplify and refine the user experience and enable even greater platform management scalability.

Click here to learn more about the new features available in XenServer 7.2.

See you on the XenServer page on Citrix.com!

Andy M.

 

Recent Comments
Christian
Awesome! All the download pages link to 7.1, tho.
Thursday, 25 May 2017 23:23
Andy Melmed
To learn about all the really cool things XenServer 7.2 has to offer our customers, visit https://www.citrix.com/blogs/2017/05/25/... Read More
Wednesday, 31 May 2017 21:18
Andy Melmed
Hi Christian, The links on the downloads page to access v7.2 have been updated. Thank you, Andy... Read More
Monday, 05 June 2017 13:31
Continue reading
8694 Hits
8 Comments

About XenServer

XenServer is the leading open source virtualization platform, powered by the Xen Project hypervisor and the XAPI toolstack. It is used in the world's largest clouds and enterprises.
 
Commercial support for XenServer is available from Citrix.