The CenturyLink Cloud Control Portal provides a high degree of self-service provisioning, management and automation capabilities, allowing customers to take full control of their cloud infrastructure. This unique, proprietary interface allows customers to self-provision capabilities such as: Server Deployment, Resource Management, Scheduling, Grouping, Scripts, Blueprints (automation), Firewall, and Networking.
Additional self-service capabilities are released frequently.
How do you handle available spare capacity?
This is a metric we monitor very closely. We tend to operate between 30-40% of available capacity across all dimensions (compute, memory, storage, and bandwidth). This level provides adequate "headroom" to ensure that spikes and bursts of activity don't impact customers.
Each node is deployed with an architecture that supports the very rapid addition of compute and storage resources. This provides elasticity and simplifies capacity planning.
What is your power redundancy infrastructure?
All of our nodes are deployed in tier 3 class (or higher) data centers. This means each node is equipped with multiple independent distribution paths, redundant hardware, and N+1 configuration of all critical infrastructure components, including chillers and HVAC systems, UPC backup and generator systems.
Since our platform is virtualized, customers are able to perform most “remote hands” functions (i.e. a hard reboot) via our Control Portal. Additional managed services – including OS and applications – are available in selected data centers. For more information, refer to: https://www.ctl.io/managed-services/operating-system.
Are you in a carrier-neutral facility?
Most of our data centers are deployed in carrier neutral facilities. Additional details regarding specific carrier options in specific locations are available upon request.
What is the nearest peer point to your data centers?
Most of our data centers are deployed in carrier neutral facilities. As a result, customers have multiple options for direct connectivity, as well as blended transit across many carriers for reliable, consistent connectivity.
What are your supported Operating Systems for virtual machines?
The CenturyLink Cloud supports many operating systems, including open-source and commercial offerings. An updated list can be found in this Knowledge Base Article.
Customers may upload their own customized images, as long as they map back to one of the supported operating systems.
How are servers provisioned?
Severs are provisioned through the Control Portal or via API. Depending on the OS template selected, and any post-provisioning tasks added by the user, virtual servers are usually live within minutes.
What is the impact on virtual servers when an underlying physical server fails?
In a worst-case scenario, all VMs on the affected physical host will be automatically migrated to a running host in the cluster and restarted. Often, we will receive an alert when a physical server is having issues. Then, we are able to use the vMotion tool to move the server to another host and avoid any downtime for the customer.
Do you have an ability to transparently move virtual servers between physical servers?
Yes, we use vMotion and Storage vMotion for these tasks.
How do you handle BIOS upgrades to your infrastructure?
CenturyLink Cloud has scheduled maintenance windows to perform updates. All VMs would be vacated off of the host prior to performing the updates, using vMotion. With this approach, the customer experiences no disruption.
What is the disk and RAID layout for physical servers and how do they interact with your SAN?
For virtual servers, there is no user-accessible local storage on any host - all storage is provisioned from SANs. Bare metal instances, however, do have local storage.
Do servers have dedicated management interfaces on a separate VLAN?
Every customer VLAN is logically isolated. CenturyLink Cloud also uses a dedicated management network for platform services.
Can I run nested hypervisors or leverage technologies such as VMware Workstation or Oracle VirtualBox on CenturyLink Cloud?
Customers who wish to use these technologies should purchase our Bare Metal servers. We do not support this approach on Standard or Virtual Machines.
What do your services cost?
Standard pricing can be found on our Pricing Catalog, or by using our Online Price Estimator. Additionally, CenturyLink can provide an estimate based on your specific configuration requirements.
The CenturyLink Cloud platform provides a "utility" billing model, where customers are able to scale resources up or down as they need. Customers are charged on an hourly basis.
For virtual machines, customers may specify the number of virtual CPUs, memory and storage that they need and are charged on an hourly basis for each of those dimensions. Customers are not forced into a pre-cast "instance" sizes.
At any time, customers can scale one or more of those dimensions (adding or removing compute and storage resource as needed). This provides a much more cost-effective and flexible platform. Additional services are available as well, including third-party software licencing, load balancing, DNS management, etc.
What is your billing increment interval?
Most of our utility-based services (VM compute, memory and storage, and applicable licencing) are calculated on an hourly basis. Stopped or Paused virtual machines are only charged for their allocated storage; they are not charged for CPU or memory while in this state. Other services may have fixed monthly charges or utilization based (for example, public Internet bandwidth is charged on a per GB-out basis) and all customers are billed in monthly cycles.
Do you charge for non-running servers?
There are various charges depending on the state of the server.
Paused State: no charge for CPU or RAM, however there is a charge for storage and OS licencing.
Archived State: Charged for storage only, at a discounted rate.
Do you charge for interconnects?
We do have a nominal charge for physical connections into any of our nodes, and cross-connect fees can apply, depending on the location. More information on this task, as well as our other service tasks, can be found here: https://www.ctl.io/service-tasks.
Do you offer direct connection of circuits with customers?
Yes. Customers can connect to the "meet me" room in each data centre, and a cross connect can be arranged from there.
Are IP addresses assigned to systems persistent?
Is your IP space portable? How do you handle Route Advertisements?
No. However we handle Route Advertisements with the VPN tunnel.
Is your network fully meshed with multiple Internet paths?
Do you offer true Dynamic Multipath Routing?
Yes, via our upstream transit providers.
Do you NAT or PAT your client machines?
What databases and versions can be run on your platform?
Customers may deploy any database that runs on Windows and Linux platforms.
What are the virtual server limits for databases?
VMs may be provisioned with up to 16 vCPUs, 128GB RAM, and up to 4 TB of storage (in 1 TB increments). We offer a max of 10 Gbps network connectivity.
What storage options do you offer?
All cloud storage is high performance; our standard tier of storage is a hybrid SSD/SATA solution.
Can you transparently move Volume/LUNs to other disk groups?
What is your storage maintenance schedule and procedure?
CenturyLink Cloud has scheduled maintenance windows to perform updates as described. All VMs would be vacated off of the storage prior to performing the updates, avoiding downtime.
Broadly speaking, users may accomplish the same functions via API that can be completed in the Control Portal UI.
How do you add compute and storage resources to a running system?
Users may do this to VMs at any time. Some operating systems require a reboot, while others do not.
Do you offer customer customized images?
Yes, customers may choose from our Windows and Linux templates, or create and upload their own.
What types of reports are available?
Our report library is accessible through the Control Portal. Customers may run a series of reports (down to the VM level) that show different performance and utilization metrics over any time period.
Billing data is provided two different ways:
As a real-time estimate. This estimate is updated hourly to reflect charges incurred to-date, current hourly charge rate, and estimated end-of-period total charges. This approach is transparent, intuitive, and enables accurate forecasting.
As an interactive invoice. "Summary" and "detail" views are available, and may be easily exported.
Have any of customers migrated from other cloud providers to your services?
Yes, we have performed these services for a number of customers. Each migration varies greatly, depending on the types of workloads involved and the customer's internal expertise.
Some customers have simply recreated their VMs from scratch on our platform, while others have brought over their existing VM images (in a *.ovf format).
Our Blueprints tool has helped some customers onboard to CenturyLink Cloud from other platforms, ultimately alleviating the cost and complexity associated with third-party cloud management products.
Do you offer real-time analysis of system availability and performance?
Within the Control Portal, customers may use reporting tools to examine the performance and availability metrics of a given VM, or Group of VMs.
These reports include data from the Platform, including CPU utilization, memory utilization, and bandwidth. Data for the last 12 months is available.
What advanced notification do customers get prior to performing maintenance?
Customers are usually notified at least 3 business days in advance of planned maintenance activities, via email.
Is maintenance included in your uptime calculations?
How do customers create support tickets?
Customers may create an unlimited number of support tickets from within the Control Portal - either via email, live chat, or phone. Each ticket is assigned a unique tracking number for future reference. Additional details on how support tickets are handled are available in our SLA.
What are your support plans and their associated cost?
The NOC is virtualized with resources located in Bellevue, WA; Salt Lake City, UT; and London.
What are your support tiers?
Our operations team is composed of two groups. The Operations Team triages the customer requests specific to their environment. The Platform Team is responsible for the operational management of the overall platform and underlying infrastructure.
Issues not resolved by the Operations Team are escalated to the Platform Team for investigation and resolution.
What is your approach to securing your multi-tenant environment?
Logical access to CenturyLink's cloud systems, applications, and data is limited to properly authorized individuals, and user rights are kept to a minimum.
The CenturyLink Cloud Platform Team controls network and server passwords. Security engineers assign all system passwords. The Platform Team is responsible for maintaining data integrity and determining end-user access rights.
All access granted to systems, applications, and data is password protected using role-based security. Auditing is implemented on all systems, where possible, to track a variety of events, including but not limited to, security access violations, application, and database access.
We employ our unique defence-in-depth approach. This spans from IDS and IDP services provided at the edge, all the way through to isolation and security policies and protocols based on industry best practices.
What audits have you undergone?
CenturyLink maintains an SSAE 16 audit certification. The auditor’s opinion is available upon request by emailing email@example.com.
What security-related services do you provide?
The CenturyLink Cloud Platform leverages carrier-class Juniper SRX firewalls with VLAN tagging, IDP and IDS. We are also able to provide full Nessus security vulnerability scans of every customer environment, then collaborate as needed to fix any identified vulnerabilities.
Do you allow physical customer access to your data centers?
Only CenturyLink employees have physical access to our private cages within any of our data centers. Customers are able to "visit" these facilities as part of an escorted tour.
Do you provide Firewall and DDOS attack mitigation?
Each data center is protected by carrier-class firewalls providing IDS and IPS services. We mitigate any DDOS attacks with these tools, as well as those provided by our upstream network providers.
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