Technical Specifications

Technical Specifications

Understand the technical specifications available to better manage your cloud solution.

Virtual servers specifications


The following CPU and RAM configurations are available for your virtual servers:

  RAM (GB)
1 2 4 8 16 32
CPU 1    

Easily change these configurations to quickly respond to business demands. You'll be able scale up to four CPUs and 32GB RAM.

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Virtual disks – system and data

Adjust your cloud solution by adding or removing data disks from your virtual servers at any time – from a minimum of 10GB to a maximum of 1,000GB size.

Through the management console, you can create up to 15 virtual disks per virtual server.

You can also remove or increase the size of a data disk, but can't reduce it.

The system disk, which contains the operating system, can't be removed nor resized.

The system disk size depends on the operating system you choose:

Operating system System disk size
Linux® 10GB
Microsoft® Windows® Server 2003 20GB
Microsoft Windows Server 2008 40GB
Microsoft Windows Small Business Server 2008 60GB

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IP addresses

Telstra will allocate a public IP address to each virtual server facing the internet in your network configuration.

You'll assign your own private IP addresses for the virtual servers connected to your private network. Both public and private IP addresses are static.

Configure up to two virtual network interface cards (vNICs) per virtual server.

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Operating systems

Our virtual servers can only be delivered using Telstra's pre-defined operating system templates.

You have the option to pick the one you need and we'll install it for you. The following are the operating systems that we currently offer:

CentOS® 5.5 (32/64-bit)
Oracle Enterprise Linux 6.0 (32/64-bit)
Red Hat® Enterprise Linux
Red Hat Enterprise Linux 5.6 (32/64-bit)
Red Hat Enterprise Linux 6.0 (32/64-bit)
Suse® Linux Enterprise
SuSe Enterprise Linux 10 SP4 (32/64-bit)
SuSe Enterprise Linux 11 SP1 (32/64-bit)
Microsoft Windows
Microsoft Windows Server 2003 - Enterprise R2 (32/64-bit)
Microsoft Windows Server 2008 - Enterprise SP2 (32/64-bit)
Microsoft Windows Server 2008 - Enterprise R2 (64-bit)
Microsoft Windows Server 2008 - Web R2 (64-bit)

Note: Microsoft Windows Small Business Server 2008 requires a minimum of 4GB RAM and Microsoft Windows Small Business Server 2011 a minimum of 8GB RAM.

You are also responsible for configuring and monitoring your operating system and ensuring that it's up to date by installing updates.

We don't provide desktop support for any of these operating systems.

Contact your vendor directly if you have any issues:

Microsoft Windows
Oracle Linux
Red Hat
Linux Ubuntu
Linux CentOS
Linux Debian
Linux Fedora

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Our unique combination of applications and networks makes Telstra Cloud Services a total solution. It's robust, highly reliable and secure, so your staff can confidently access the applications they need from the office, their home or a client's site.

There are no up-front costs and reduced ongoing IT demands to worry about – and adding applications or buying extra licences is simply managed via a user-friendly online portal.

So instead of spending time and money on IT maintenance, Telstra provides a range of fully-supported cloud applications to suit businesses of all sizes.

  • Our Software provides leading applications that you request and we install for you on your virtual servers. These applications require you to have a virtual server plan.
  • Our Business apps provide instant access to enterprise-grade software for an easy monthly fee. This means any business can gain the same software advantages as their biggest competitor.
  • Enterprise apps applications combine the strengths of our alliance partners with local hosting in our secure data centres plus access via the Telstra Next IPd® network for added security.

Available to all our customers, software can be configured in the Cloud Services management console once you've purchased a virtual server plan.

Business applications and enterprise applications are only available to our customers based in Australia. Contact our customer service team or your Telstra representative.

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Licence mobility

Use your existing Microsoft software licences on our cloud servers.

Thanks to our status as a Microsoft-authorised licence mobility partner, if you're a Microsoft Volume Licensing customer covered by Microsoft Software Assurance you may be able to use your eligible software licences on our cloud servers.

Licence mobility enables you to leverage your existing Microsoft licence investment on our cloud servers, thereby making it easier to move to our cloud services.

The eligible application software licences are:

  • Microsoft Dynamics® CRM Server
  • Microsoft Exchange Server
  • Microsoft Lync® Server
  • Microsoft SharePoint® Server
  • Microsoft SQL Server®

Note: Microsoft Windows Server and desktop apps are ineligible. We don't support customer-supplied operating systems or virtual hard disks – you must select one of our pre-packaged operating systems.

How to apply


Simply view your licence status by logging in to the Microsoft Volume Licensing Service Centre and note which of the above eligible applications you're licensed for. Typically, your IT or procurement department can access your licensing agreement details.


Under the Authorised Mobility Partner section of the form, you'll need to write 'Telstra Corporation Limited' as your mobility partner and include our URL and licensing email From there, wait for signed notification* from Microsoft before installing your software. This usually takes a few business days.


*If your licence(s) are eligible, Microsoft will email a counter-signed copy of the form both to you and us. If your licences can't be verified, Microsoft will return the verification form to you explaining why. You can make any necessary revisions and resubmit the form as many times as needed.

Remember, it's up to you to have the right licences to install and run software applications on your virtual servers. See our Responsibilities Guide and Our Customer Terms.

For all the details, see Microsoft Volume Licensing Software Assurance.

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If you enable backup configuration for your virtual servers, Telstra will create daily backups of your system and data and will store them off-site.

We provide the following short-term and long-term backup retention options:

Short-term 1 week
1 month
1 quarter
7 daily copies
1 month of daily copies
3 months of daily copies
Long-term 1 year
7 years
3 months of daily copies
3 months of daily copies
12 monthly copies
84 monthly copies

You can restore selected individual or all files from a data disk from virtual server backups. We don't support full system restore from backups, only from snapshots.

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Virtual server snapshots will help you roll back to your system configuration within 24 hours from the moment you created it.

You can only have one snapshot at a time for each virtual server. If you create a new one, you'll automatically delete the earlier snapshot.

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About network and security add-ons


Virtual servers can be connected to the internet and/or a private cloud network. You can connect one or more IP subnets to your private cloud network.

There are two options for connecting to virtual servers through a permanent, private network - the Telstra Next IP® network or an IPsec VPN network tunnel. Both can be requested through the management console.

A Telstra Next IP® network connection can reach all your IP subnets in your private cloud network.

IPsec VPN network tunnels connect only to the IP subnets you specify.

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Remote access to virtual servers

You can remotely access and manage virtual servers through SSL VPN technology – a secure client-to-site network tunnel used to remotely access your cloud solution from the internet. You access it over HTTPS, using a web browser. Once authenticated, you have direct access to virtual servers. All the network traffic will be transmitted securely.

Once you've established a VPN connection, you'll be able to use tools such as Remote Desktop Services or Secure Shell to manage your virtual server – just as if you were sitting in front of it.

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To be reachable by IPsec VPN, a virtual server needs to be connected to a private cloud network.

Connect up to three IPsec VPN network tunnels at one time. Add and remove tunnels any time.

Specify one or more source subnets at a single office site and multiple destination subnets in your private cloud network – all within a single network tunnel. Use firewall rules to restrict access to selected virtual servers.

You choose the encryption and authentication protocols that secure your IPsec VPN connection, from the options below.

IPsec VPN security phase

Algorithm options

Phase 1
Lifetime: 86,400 seconds (24 hours)


Phase 2
Lifetime: between 3,600 and 43,200 seconds (regardless of whether or not PFS is selected)


Phase 2 Perfect forwarding secrecy (PFS)

Not required
DH2 (1024 bits)
DH5 (1536 bits)

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SMTP email relay

All outbound email traffic originating from mail servers operating within the cloud will be required to be sent through our SMTP mail relay service. SMTP mail relay is charged based on the number of email messages sent.

Configure your application using our SMTP mail relay details (which you'll be sent when your cloud solution is up and running). You'll be automatically charged for any emails sent through our servers.

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Extra services

Load balancer services

Want to optimise your virtual server and network performance? Request load balancers for your private and public networks and control traffic between multiple virtual servers.

For more complex network configurations, you have the flexibility to customise the load balancer algorithm to divert particular traffic to different directions. The load balancer health check will redirect traffic to other load balanced servers if one of your virtual servers is not responding.

If your load balancer is facing the internet, Telstra will allocate a public IP address. If it's located in your private network, you'll assign your own private IP address.

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Reliability and assurance

Our cloud infrastructure is fully redundant. We protect our customers from a single-point-of-failure for all the features in our architecture.

We also perform regular penetration testing of our platform using a third party.

Telstra's virtual infrastructure is also monitored by an assurance tool that sends alerts to our support team if something goes wrong.

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Service level agreements

Our virtual servers on shared compute are backed by the following service level agreements to help ensure maximum availability and performance.

Service support coverage hours 24/7
Service availability
(Measured on a yearly basis.)
99.9% of the service year
Recovery point objective
(Maximum rollback point in time to which your data will be restored during data restoration.)
24 hours
Recovery time objective
(Time taken to restore or reconfigure your equipment and commence the uploading of data to the target systems during the restoration process.)
2 hours

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