Software Licensing for Data Centers is Evolving due to Virtualization

To mirror this novel reality, software wholesalers and Information Technology departments have been searching for methods to fine-tune existing licensing models. IT staffs also would like to minimize the licensing expenditures via economies of scale and precise data about how many licenses are really required.

Two new Cisco products now assist Cisco IT in considerably minimizing the costs associated with licensing OSs and App Software in the data center:

   The Cisco UCS B420 M3 Blade Servers possess the super-dense memory which enables you to provide up to 192 virtual machines per blade server. For OS licenses, you purchase one license with infinite guests for the blade. You are able to configure as guests all of the virtual machines (VMs) hosted on that specific server blade. This method implies that some of your OS licensing costs are 80% less than what they would have been if you had purchased individual licenses for each Virtual Machine (VM).

   Cisco’s Intelligent Automation for Cloud (Cisco IAC) is basically an orchestration software which you can employ to create the virtual machine instances. For App Software licensing, you can also employ Cisco IAC to keep track of the quantity of licenses actually deployed, then you can buy those licenses at a negotiated volume discount from Cisco. This methodology can be less costly than purchasing an enterprise license having unlimited number of users.

Another benefit for your IT staff is that you will not have to keep guessing how many licenses you require at the start of your contract term. Rather you can simply analyze Cisco IAC counts to “pay as you grow,” so that you are only purchasing licenses at the contract price when you really require them.

Precise license counts are also advantageous for vendors with the peace of mind that you will not be using more licenses than you have paid for. License tracking has been difficult problem between vendors and IT departments for a long time now as “true-up” counts can be very problematic to do without the automation and cloud standpoints supplied by the Cisco IAC.

However, there is one caveat for this: Diverse software vendors delineate their licenses in different manners so a given vendor’s license coverage & terms are continuously subject to changes.

Since virtualization plays a more and more greater role in more data centers, we anticipate that licensing choices will continue to evolve. We suggest you take a look at your virtualization strategies and licensing models with the target of harmonizing your hardware investments with the capability to minimize licensing costs.

To learn more, please speak to our licensing specialists today.

Cisco ONE Software Licensing

The main benefit of Cisco ONE is a reliable software prototype across all products. Whether you use the Cloud, whether you use a mobile device, whether you use a WAN or whether you use a data center, the substance is now all the same.

Cisco ONE for Access: This assists you in managing and scaling your access, combination, and essential switches ranging from the campus to the branch location.

Cisco ONE for WAN: This assists you in managing, securing, and optimizing the WAN for improved business results in branch offices and on the network boundaries.

Cisco ONE for Data Center: This assists you in building accessible, robust, and highly sheltered, congregated, multi-user data center networks.

Under the terms and conditions quantified in the Cisco ONE package, software licenses are now movable. Clients no longer need to repurchase new software every time they upgrade the hardware. Consumers also possess the option of buying perpetual licenses or go for a subscription license alternative which Cisco is planning to roll out officially late this year. Customers also still possess the alternative of signing an Enterprise License Agreement (ELA) to give enterprise-wide access for Cisco software.

The tactic behind Cisco ONE is to move IT consumers from the present a la carte purchasing model for infrastructure applications to software which has been preinstalled in the Cisco hardware. Cisco is advertising the transformation as an easier and less costly substitute to selecting from hundreds of its own distinctly priced software features. However, some specialists believe the cost of a Cisco ONE package may wind up being higher in case a user fails to buy sufficient capacity under a single license.

Cisco ONE consists of three tiers. The base layer comprises core networking, security and systems software, as well as network and energy management. The second tier, that Cisco names “advanced,” has software capabilities definite to the use case. This layer is intended for IT teams to help them construct proficiencies on top of the foundation tier. In the end, Cisco has fabricated a security tier across all the spheres, which is more forward-looking than the security incorporated into the foundation layer alone.

To find out more, please speak with our Cisco Licensing Specialists here.

How to Choose APC Rack PDU for Data Center Power Distribution

Introduction (direct answer first)

Choose an APC rack PDU based on load capacity, monitoring level, and control requirements—not just outlet count.
Start with your rack’s power draw and redundancy design, then decide whether you need basic distribution, metering, or outlet-level control.

Use Case / Deployment Fit

Basic PDU (no monitoring)

  • Lab racks, non-critical environments
  • Stable loads with no need for visibility
  • Lowest cost option

Metered PDU (input-level monitoring)

  • Standard enterprise racks
  • Capacity planning and load balancing
  • Avoiding circuit overload

Switched PDU (remote outlet control)

  • Production environments
  • Remote reboot capability for servers/network gear
  • Power sequencing after outages

Metered-by-Outlet PDU (advanced visibility)

  • High-density racks
  • Colocation billing or per-device tracking
  • Detailed capacity optimization

Example: Models like AP8659 provide per-outlet metering and switching, enabling granular control and monitoring of each device.

Technical Breakdown

1. Power Capacity (Most Critical Decision)

  • Typical options: 16A, 32A, 3-phase
  • Voltage: 230V (common globally), 208V (US DCs)

Rule:
Calculate total rack load → add 20–30% headroom

Modern APC PDUs support up to ~17 kW per unit depending on configuration.

2. Input & Redundancy Design

  • Single-feed PDU → for non-redundant racks
  • Dual PDU (A/B feed) → for critical infrastructure

If you’re running dual PSUs per server, you need two PDUs per rack (A+B feeds).

3. Outlet Configuration (C13 vs C19)

  • C13 outlets → standard servers, switches
  • C19 outlets → high-power gear (blade servers, storage arrays)

Example: Enterprise PDUs often mix both (e.g., 21×C13 + 3×C19).

4. Monitoring Level

No monitoring

  • Cheapest
  • No visibility → higher operational risk

Input-level metering

  • Tracks total load
  • Helps prevent overload

Outlet-level metering

  • Tracks per-device consumption
  • Required for:
    • Chargeback environments
    • Capacity optimization

APC PDUs offer up to 1% metering accuracy, suitable for billing-grade measurements.

5. Switching Capability

Switched PDUs allow:

  • Remote reboot of locked devices
  • Power sequencing after outages
  • Load shedding control

This is critical for unmanned sites and remote data centers.

6. Form Factor

0U (vertical)

  • Most common in data centers
  • Saves rack space
  • Higher outlet density

1U/2U (horizontal)

  • Used in small racks or edge deployments

7. Network & Integration

Look for:

  • SNMP / Web interface
  • Integration with DCIM (e.g., EcoStruxure)
  • Alarm thresholds and alerts

Modern APC PDUs allow remote management, firmware updates, and multi-user access control.

Comparison Table

Requirement Basic PDU Metered PDU Switched PDU Metered-by-Outlet
Cost Low Medium Medium–High High
Monitoring None Total load Total load Per outlet
Remote control No No Yes Yes
Use case Non-critical Standard racks Production IT High-density / colo
Risk visibility None Medium High Maximum

Limitations & Trade-offs

Basic PDUs

  • No visibility → risk of overload
  • No remote troubleshooting

Metered PDUs

  • Cannot isolate device-level issues

Switched PDUs

  • Higher cost
  • Requires network setup and access control

Metered-by-Outlet

  • Most expensive
  • Overkill for small deployments

Procurement Insight

The biggest mistake is under-specifying monitoring, not power capacity.

  • Lack of monitoring → reactive operations
  • Lack of switching → physical intervention required

Typical enterprise strategy:

  • Core racks → switched + metered-by-outlet
  • Standard racks → metered
  • Edge racks → basic or switched

Enterprise IT buyers often standardize on APC 8000/9000 series PDUs due to consistent firmware, network management, and rack compatibility—commonly sourced through distributors like DC Supplies for aligned rack deployments.

Real-world Scenarios

Scenario 1: Virtualized Rack (VM cluster)

  • Dual PDUs (A/B feed)
  • Switched + outlet-level metering

Scenario 2: Enterprise Network Rack

  • Metered PDU sufficient
  • No need for outlet-level control

Scenario 3: Colocation Rack (customer billing)

  • Metered-by-outlet mandatory

Scenario 4: Edge Site / Branch

  • Switched PDU for remote reboot
  • Avoids onsite intervention

Final Recommendation

  1. Start with total rack load + redundancy model
  2. Choose monitoring level based on operational visibility needs
  3. Add switching only if remote control is required

If unsure, default to:
0U switched, metered APC PDU with mixed C13/C19 outlets

It covers most enterprise use cases without limiting future scalability.