A leading large bank needed to retire some of its old hardware within its investment banking division. The objective was to update technology and make cost savings, including reducing ongoing support and maintenance costs. Its plan was to migrate its existing AIX platforms from IBM P5+P6’s to the newer IBM P7+P750 hardware, and it wanted to confirm exactly what benefits such a migration would yield.
The bank was already using Sumerian’s CPaaS to drive continuous improvements to the capacity and performance of its global IT estate. It believed Sumerian’s analytics would provide the quantified evidence needed to confirm the optimal migration plan and maximize cost savings.
Sumerian took inventory data for the bank’s existing hardware, as well as the supplier specifications for the new hardware.
The first step was to establish a Baseline and measure the capacity and performance of the services that the bank had running on the existing hardware. To do this, Sumerian extracted relevant metrics from the data logs produced by monitoring tools running on the servers. This allowed Sumerian to model the current impact of the services on the infrastructure, identify any over or under-allocation of resource, and define an optimum capacity requirement. It also allowed direct validation of the inventory against the system configuration recorded in the logs files.
Once the Baseline was established, Sumerian took the rightsized capacity requirements for the various systems and modeled that against the new hardware specifications, using industry standard IBM rPerf metrics to determine the appropriate capacity and performance requirements for the new hardware. Sumerian also took into account the various business rules in place within the bank, governing co-residence or separation of critical applications on servers, contingency, DR and UAT/Dev requirements etc. These rules were applied to the models so that an optimum configuration could be designed that met all performance and business requirements with the minimum of hardware.
Outcome and results
The bank proved it could reduce its estate from 15 physical servers (with 91 cores and a 34.3 kW consumption) on the old P5 and P6 estate to 4 servers (with 32 cores and a 1.3 kW consumption) on the new P7 and P750 estate. This would yield nearly $60,000 a month in recharge cost savings for the investment bank, and over $3,800 per month in reduced datacenter, licensing and support costs for the central IT operations team.