Frequently asked questions

How it is built?

Management Layer – delivered with VMWare tools (most mature and proven technology on the market).
Virtualization Layer – delivered with market leading technology from VMWare. The network in the virtual environment is delivered with Cisco Nexus 1000v virtual network switches designed for VMWare virtual environments.
Computing Power – delivered with powerful Cisco UCS servers: designed with Intel components for virtual services. Computing power is delivered to the VHE as a number of GHz, which are then distributed to vCPUs assigned to the Virtual Servers created by GTS or the customer within the VHE. GHzs are distributed equally to each vCPU created and running in the VHE.
Memory (RAM) – physical RAM reserved and allocated from the platform to VHE. 1 GB of virtual RAM = 1 GB of physical RAM in the server.
Storage Capacity - delivered with NetApp Storage, designed to give the best storage performance in Virtual Environments. It is delivered in multiples of 50 GB modules. Storage is redistributable to the Virtual Machines. The minimum level for the Operating System Partition is defined at 20 GB. Standard cap is set at 2TB. If more than 2TB is required then additional Data Storage service should be reserved .
Networking for the GTS Virtual Hosting Platform is divided into two areas (delivered by Cisco):
  • Storage Area Network (SAN) to connect Servers with Storage (10 Gbps iSCSI infrastructure)
  • Layer-2 Network to interconnect the platform elements such as servers, firewalls, load balancers etc. (1 Gbps infrastructure) and make it possible to access the services.
Data Center Infrastructure – the service is delivered from our four GTS Data Centers located in:
  • Prague (Czech Republic)
  • Piaseczno (Poland)
  • Budapest (Hungary)
  • Bucharest (Romania)
GTS VHE allows you to combine elements of physical and virtual infrastructures to meet your specific business requirements. Combine it with GTS Colocation and your own infrastructure for hybrid cloud environments. Alternatively, GTS can provide you with your own private virtual infrastructure, completely independent of the public VHE platform.

What are Templates?

Operating systems and appropriate licenses for virtual servers are available in preconfigured templates. GTS engineers can customize these templates to best fit your business use. Each specific OS running inside a virtual machine is prepared by GTS to run in the virtual layer.
A template is a set of resources ready to deploy in a virtual machine. Templates consist of a combination of OS and/or DB plus a number of vCPUs, quantity of RAM and allocated storage space. These templates are easy to use and allow you to quickly create virtual machines. VM resources can be then modified after creation.

The administrator can choose a template from a catalogue. There are two types of catalogues:
  • Public Template Catalogue – a list of templates for the creation of virtual machines available to all customers
  • Private Template Catalogue - space  in which customers can store their own templates (invisible to other customers) to be used in the future to create virtual machines. The Private Catalogue is available onlywith the Unmanaged VHE optionwhere the Customer’s administrator manages the instance.


What is the Licensing Policy ?

Due to the licensing policy of software vendors, customers can only buy licenses for GTS prepared templates. GTS does not restrict the customer’s administrator from uploading hisown VMs into the platform. However in this situation, the administrator must be aware that GTS is not able to provide licenses for the VM’s OS. The only possibility to use the licenses provided by GTS is to build the VM from the template available in the public catalogue.
A list of all Templates provided and supported by GTS is defined and available on the web page in the Resources section at the following link : http://www.gtsce.com/services/cloud-services/virtual-hosting-environment

Can I try the service ?

To try our service, you can simple go to Test Drive. Click here. Test Drive gives the administrator chance to touch and feel our virtual environment. If you would like to test your application on a dedicated virtual machine, just contact your sales representative. Trials are free, you only need to contact us.

How to order the service ? 

To order the service, you just contact our sales department. Please click here:

Contact Us

How long does it take to provide the service ? 

Service Provisioning Steps
  1. First, sign a contract and fill out the Configuration Guide that tells our engineers how you would like the environment setup including the servers, network and service elements.
  2. During the next few days, our engineers will prepare a virtual data center for you. Depending the complexity of the configuration, this cloud environment could take only a few hours to a couple of weeks.
  3. If you select the Unmanaged service option,
    GTS will provide youaccess to the vCloud Director.
  4. Check and confirm the environment meets your specifications. If everything is correct, simple sign the handover protocol and start using the cloud service.
  5. From that point, we start billing.

Can I install my own OS or DB?

GTS does not restrict customers from using their own licensed OS, DBor applications. However,customers should consult with the software vendor to determine if this violatesany End User License Agreement. Some vendors do not allow the use of customer provided licenses on outsourced hosting platforms. Additionally, the OS must be supported VMWare. In order to achieve the best OS performance on avirtual machine, GTS recommends installing VMware tools and readingthe latest VMware notes to ensure OS is optimized for your virtual environment. GTS takes no responsibility for performance issues caused by customer installed operating systems. Customers should follow GTS recommendations to achieve best results when using different operating systems than those supported by GTS.

How many IP addresses can I get?

As many as you want and can use.

Is backup included in the virtual hosting service?

Virtual Hosting is itself a very secure and redundant solution. If one hardwareplatform node fails, another takes over its functions. That means your virtual environment has high availability built-in.
If you wouldlike to backup your data in a secure way, application or the whole operating system, you can utilize GTS’ backup solution. Please refer to our Backup as a service

How can I check usage?

If you have fixed resources just go to your Virtual Datacenter properties in the VCloud Director and look at usage. See the example below: 

If you would like to see your usage online, please go to the Performance Monitoring System.
There you can see:
  • Average CPU usage [MHz and percentage]
  • Memory Usage [MB and percentage]
  • Network statistics for a particular VM and the whole environment [Mbps]
  • Disks [Latency and throughput]

It is possible to export any chart into the Excel format (e.g. for further data processing) or into a PDF document from the performance monitoring application. You simply click on the option MORE and then select the EXPORT folder.  

Are my servers secured by a firewall?

The Cloud services suite, both Managed and Unmanaged, terminate into GTS Data Center routers with enabled packet filtering. The following table shows the possible combinations of main product and security options:

  Managed Unmanaged
Open Internet - +
Standard Firewall Policy + +
Customer Firewall Policy optional optional
Dedicated Firewall optional optional
Open Internet  
Default security policy (security policies on access routers) setup allows "open" connectivity to the Internet, without intentional blocking of any ports and covers the following:
  • Block private addresses according to RFC 1918, and broadcast/multicast addresses
    • ip access-list extended internet-in
    • deny ip any
    • deny ip any
    • deny ip any
    • deny ip any
    • deny ip any
    • deny ip any
    • deny ip any
    • deny ip any
    • deny ip virt_block any
    • permit ip any any
  • Enable uRPF Unicast Reverse Path Forwarding (Unicast RPF) to limit malicious traffic on enterprise networks.
  • Protect with L2 logical separation against resource exhaustion (private VLANs with local-proxy-arp)
  • Secure management access to the platform and remote access by customers.
  • Private IP ranges are filtered-out from the public interface. Another host cannot attack the VM with private ip from the public Internet
  • If firewall protection for the service is required, the setup is defined based on the service variant and security option.

Standard Firewall Policy 
Standard firewall Policy uses the dedicated context on the Data Center firewall. The dedicated context means a Virtual Firewall shared among all customers with Standard Firewall Policy.
The Standard Firewall Policy definition is to allow the following ports from anywhere to anywhere:
  • http – 80 (tcp)
  • https – 443 (tcp)
  • ssh – 22 (tcp)
  • rdp – 3389 (tcp)
  • dns – 53 (udp/tcp)
  • ntp – network time protocol 123
  • KMS (Key Management Server) - 1688/tcp  kms.dc.gtsce.net
    • Permit tcp any any eq 3389
    • Permit tcp any any eq 22
    • Permit tcp any any eq 80
    • Permit tcp any any eq 443
    • Permit udp any any eq 53
    • Permit tcp any any eq 53
    • Permit udp any any eq 123
    • Permit tcp any kms.dc.gtsce.net eq 1688
If the customer requires a different security policy configuration, (e.g. different ports, rules etc), one of the following options can be used:
  • Custom Firewall Policy
  • Dedicated Firewall

Custom Firewall Policy (Edge Gateway)
In the Unmanaged service variant, firewall rules are configured according to the customer’s requirements as defined in the Configuration Guide, which means that GTS shall assume no responsibility for the level of security and availibility service impact due to the required (and applied) settings of the firewall.
The Custom Firewall Policy is provisioned with:
  • Edge Gateway is a state firewall, where you can allow/deny any TCP/UDP ports/protocol. The firewall operates on L3 and L4 according ISO/OSI model.

Dedicated Firewall
This option is available as an additional separate service, GTS Managed Security.  

What Professional Services does GTS perform?

People are GTS’s biggest advantage. Our professional pre-sales consultants, technical engineers and project managers are well prepared to work closely with your organization. GTS prefers to fully manage the platform for our customers as it core competency. However, customers can manage some services themselves if they elect to.We support customersat all times whether in problem solving or providing advice on how to get the most out of their cloud environment.
Cloud services need special treatment and management. Learn more about what we do below.
Fully Managed – The VM +VHE Management is fully implemented and maintained by a GTS. When a customer chooses the GTS server management option, a GTS engineer reviews the customer order and configures the OS, DB and application that requires root (admin) access.

Only VHE – This option is related to virtual infrastructure management. If the customer chooses this variant, GTS engineers manage the configuration of the virtual machines. The customer receives limited access to the vCloud Director portal (read only + restart option, power-off VM) and has full admin rights to the OS installed on the VMs. Every change to VHE configuration (create/modify/remove/block Virtual Server, configure network, manage IP etc.) is made by the GTS engineer based on the customer order.

Unmanaged – In this option, the customer has full rights and responsibilities for the infrastructure elements and OS. The customer makes any changes to the virtual infrastructure.

The following table compares service management variants:

  Full Managed Only VHE Unmanaged
Security policy + + +
VHE resources management + + -
Proactive service monitoring + - -
VM resources management + + -
OS management + - -
DB management O - -

Which software can GTS manage?

All Windows Servers My
Linux Debian 6.0 Microsoft SQL 2005 Standard (64-bit)
Linux CentOS 6 Microsoft SQL 2008 Web (64-bit)
Linux Ubuntu 12 Microsoft SQL 2008 Standard (64-bit)
Red Hat Enterprise Linux 6 Microsoft SQL 2012 Web (64-bit)
  Microsoft SQL 2012 Standard (64-bit)
  Oracle Standard Edition One 11g

How much does it cost?

GTS provides a full suite of cloud services to best fit your business operations. Our offers are located in country and competitive. Please contact us and our technical consultants can sit down with you to learn your exact business issues and build the right cloud solution for your organization.  

How is the service billed?


Resource billing

Since we can document all the measured items, GTS is able to collect all the necessary data for a particular customer over a given billing period. With this approach GTS,can apply the same billing rule for customers who want to be charged on a fixed monthly basis or according to usage. There are three scenarios for service fees:
  • Fixed flat fee only - the price for the resources is calculated based on the number of committed and reserved resources. Resources assigned to the service are prepaid; the administrator may operate only within prepaid resources that have a maximum limit based on the value of commitment.
  • Fixed flat fee + Usage fee - defined as committed resources and on-demand resources assigned to the service by the administrator when the committed resources are insufficient.
  • Usage only fee – for special solutions, there is no need to commit any resources. Such a billing model is useful for Disaster Recovery/r Business Continuity solutions or test and development environments.

On-demand resources are charged hourly for each resource unit above the defined limit. On-demand resources include  CPU, RAM, and Storage.
  • Usage of resources is measured continuously (CPU average within the particular hour sample; the remainder “as is value” for the time the script is measuring the value within a particular hour).
  • The 1 hour samples generated by the platform chargeback module are the basis for charged fees. The value of the sample for the particular resource is each average usage sample of the particular resource within 1 hour.
  • For the purposes of calculating usage, the sum of all samples generated by the created virtual machines is taken.

The following rules of allocation are applied to the respective resources:
  Powered on Powered off Deleted
CPU (GHz) + - -
RAM (GB) + - -
Storage (GB) + + -

License billing

Charges for licenses with virtual machines follow the rule: 1 VM = 1 license.
Not all licenses are charged for each started hour above the fixed limit, if set. A list of licenses that can be charged for usage is available in the Software Licenses Price List. Please ask your account representative for the list. The following rules of allocation are applied to hourly-based licensing.
  Powered on Powered off Deleted
Licenses + - -
The remaining licenses are charged on a monthly fee basis. A fee is generated when a virtual machine is created from the available templates. Switching off or suspending a virtual machine and then restarting does not cause a new monthly fee for such a license. Deleting a virtual machine and then building a new one with the same operating system, database or application does cause a new monthly fee for the respective license.  

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