SUMMARY:

• Over Twenty years of IT Administration experience.
• Fifteen plus years of experience in SAP R/3 Basis Netweaver Administration & Security.
• Six years of UNIX, Windows Administration, Network Administration.
• Experience in Database Oracle, DB2 and SQL to supporting the SAP environment.
• Experience in SAN/TAN for SAP database and Backup strategy.
• Experience in Project Delivery, Project Management, Project Coordination and accomplishment for goals.
• Installation and support of SAP releases 4.6C, 4.7 Enterprise, ECC 6.0 and newer on various platforms. Including full life cycle implementations projects, upgrade projects and also providing production support in various projects on multiple platforms.
• Continuous improvements on performance, output management, data monitoring, configurations, upgrades and administration procedures.
• Experience ensuring security settings meet requirements of business and alignment with defined controls and standards.
• Working extensively on kernel upgrade, installing add - ons, update support packs and patches, performance analysis and memory management, spool administration, database management and troubleshooting (problem reporting and resolution).
• Experience in SAP HANA 1.0 and 2.0, S/4 HANA, HANA Cloud Integration, AWS, FIORI, DMO migration.
• Manage and support full application stacks from the OS through custom applications using Amazon cloud based computing environments.
• Participate in planning, implementation, and growth of our infrastructure on Amazon Web Services.
• Working knowledge of AWS Services IaaS, PaaS, and SaaS and coming trends in the Cloud space
• Experience in Netweaver 7.0, 7.1, 7.2, 7.3, 7.4, 7.5 products PI, BI, Enterprise Portal and MDM.
• Experience in Datacenter Migration, Hardware, ITIL and ITSM process.
• Experience in job scheduling Control M for SAP systems and monitoring.
• Experience in mySAP solution module SCM 7.0, livecache, SRM, PLM and CRM, GRC.
• Experience in Solution Manager installation, configuration for EndtoEnd analysis and Enhancement packages (EHP).
• Experience in Virtualization and Cloud computing for Custom Cloud for SAP systems for reducing the costs involved in Datacenter.
• Experience in sap security including portal, ssl, Java cryptographic tool, SAP* and others.
• Experience in High-Availability, Disaster Recovery, Webdispatchers for SAP systems.
• Strong team member and excellent interpersonal skills and having good support with other technical infrastructure groups pertaining to the implementations.
• Good documentation policies like record every change in the landscape.
• Experience in security requirements for Sarbanes-Oxley (SOX) compliance framework using SOD in SAP Applications with emphasis on internal control requirements.
• Co-ordination, Evaluation and implementations of Going Live, Early Watch sessions and Production support.

PROFESSIONAL EXPERIENCE:

Confidential

Sr. SAP basis/HANA security and cloud administrator

Responsibilities:

• Implemented and performed Production support for projects in multi platform.
• Planning and Sizing the hardware requirement, Backup software, RAID system, storage.
• Followed the ASAP Methodology for the Project implementation with Initial Prep, Blueprint, Scoping, Realization, Final Prep and Go-Live phases for SAP New and Re-Implementations.
• Converting the Business/Functional Requirements into Technical Requirements in terms of Hardware Sizing, System Landscape Strategy, Client Strategy, B & R, HA, DR, Training, UAT, Integration Testing, Third Party Interfaces, Bolt-on Tools.
• Served as focal point for communication between Technical infrastructure and Functional Teams.
• Determined options in terms of technical infrastructure, business needs and change management demands (including: training, planning and execution). Troubleshoot implementation problems both technical and organizational.
• Architect the System Landscapes for ECC, CRM, BI, Portal, PI/XI, Solution Manager etc. in terms of Hardware Sizing, Installations Domain, Distributed, HA Technical Configuration, Performance & Tuning Backend Storage, OS, Network, Database and Application, HA, DR, Client Strategy etc.
• Supporting the project for UNIX hardware refresh for SAP system.
• Experience in Landscape strategy, client strategy, usage types, database for SAP systems.
• Installation, configuration and maintains of landscape Netweaver Enterprise Portal 7.0, 7.1, 7.3, 7.4, 7.5 ECC 6.0., SCM, Netweaver 7.0, PI, Livecache and BI.
• Installation of new release including Netweaver 7.1, 7.2 and 7.3 with different usage types. Knowledge of ECC 6.0 EHP6 support pack.
• Experience in supporting Bex Analyzer in BW systems, TREXADMIN, re-org the indexing, troubleshooting the day to day issues.
• Experience in BW landscape, BWA installation, upgrading and supporting.
• Administrations of J2EE engine, JAVA stack for Netweaver portal- Enterprise portal and PI landscape.
• Experience in Software Update Manager for SAP HANA (SUM4HANA), SAP HANA studio.
• Experience in installation and configuration of SAP Host Agent.
• Experience in new SAP HANA tool including platform HDBLCM, Application HDBLCM.
• Experience in SAP HANA Security, Single Sign on infrastructure, XS application server, encryptions, authentication, authorization via JDBC and HTTPs.
• Experience in SAP HANA, S/4 HANA installation, configuration and supporting the experiment.
• Experience in HANA Cloud integration in premise and on cloud.
• Experience in HANA Cloud adapters SOAP, templets, account creation, some experience in mapping for cloud. HANA cloud connectivity, message flows, SAP HANA cloud Platform Cockpit, cloudintergrationHANAondemand, other clouds.
• Implement and manage continuous delivery systems and methodologies on AWS.
• Core Unix & Network Administration across Linux environments.
• In a secondary role, the AWS Engineer will be expected to provide support extending beyond AWS in Amazon cloud.
• Experience in cloud access as an admin, LVM (landscape virtualization management), setup LVM with SAP Netweaver, monitoring, operation via LVM.
• Experience in SUM updates SAP NetWeaver Application Server running on SAP HANA database.
• Experience in HANA DMO migration, Software Provisioning Manager, HANA Security, Backups, Performance Tuning.
• Experience in integration of Network, Storage, and HANA database in different hardware.
• Experience in Datacenter integration with SAP HANA software.
• Experience in SAP HANA in-memory database system, SAP HANA studio, SAP HANA client and SAP HANA extended Application Services.
• Experience in working with SAP HANA certified appliance.
• Experience in HANA system installation and migration.
• Experience in HANA different tools to monitor and support.
• Experience in supporting HANA systems, day to day operation for HANA systems.
• Experience in FIORI web application and configuration.
• Experience in Expertise in CMC configuration and administration of SAP Data services repositories.
• Experience in BODS Data Services and BOBJ.
• Experience in Data Service Admin Management Console, Central Management Console (CMC).
• Experience in RFC Server Service, DataDirect with Data Service to connect to ODBC driver.
• Experience in SAP Data Services integrates with other products including BW, Business Object, MDM and others.
• Experience in working with SAP Data Services Local and Central Repository.
• Experience in administrator SAP Data Services.
• Experience in Business Objects software, studio and dashboards.
• Experience in administration of Business Objects including licensing, tuning and others.
• Experience in EMC SRDF for Disaster Recovery testing, replication.
• Administrating the Portal environment i-vews, post installation, Content Administration, connecting SAP to Non SAP system and Java administration.
• Portal transport, UME, installation, Monitoring and Performance tuning -J2EE engine Thresh holds.
• Administrating the Portal environment i-vews, post installation, Content Administration, connecting SAP to Non SAP system and Java administration.
• Experience in RevTrac Transport Management Tool, Release Management, NWDI transports, perform transports using RevTrac tool.
• Experience in Project Management, provide support.
• Experience in GRC 10.1 and configuration.
• Experience in Application Lifecycle Management (ALM) with ITIL including Requirements, Design, Build & Test, Deploy, Operate, and Optimize.
• Experience in SAP Webdispatcher and Apache Web server for load balancer.
• Installation of Solution Manager 7.0, 7.1, 7.2 and configuration which includes maintains optimizer, monitoring, SLD (System Landscape Directory), diagnostics, CHARM, ITSM and other functionality.
• Experience in Solution Manager third part integration including HP tools and others.
• Experience in Solution Manager 7.1 E2E (End to End Analysis), RCA, Service Desk and diagnostics agent.
• Installation and testing of Bolt-on and third party tool which includes BSI TUBS for tax data update, Vertex, UPerform, Open text, Adobe Document Services (ADS) and configuration.
• Provide day to day production support to the environment using clearquest and remedy ticketing system. Troubleshooting and fix the production issues and provides knowledge transfer to the existing Team.
• ABAP and JAVA Client Copy, Homogenous and Heterogeneous System Copy and System Refresh Landscape and post installation.
• Experience in System copy tool R3load, JLoad, R3trans, export/import, Migration Monitor, Distribution Monitor.
• SCM/APO installations, post installation steps, maintain connectivity between ECC and other systems in landscape.
• Experience in supporting APO optimizer with SCM 7.0 and LiveCache 7.7.
• Experience CIF error handling, CIF queues, Background jobs to manage the APO core interface and monitoring the CIF using CIF cockpit.
• Executed SAP Archiving project to create the archiving strategy and the company data.
• Provide day to day support, troubleshoots the user ticket and follow the procedure for route cause analysis.
• Database monitoring for space utilization & performance tunings.
• Schedule Backups, restore of production and several other database servers.
• Participate in Development, Configuration and Production changes and work with Developers, Functional to record the changes.
• Performed the Oracle installation with Oracle universal Installer and maintain Opatch.
• Working with Backup, Storage and Network team to setup the Backup strategy, Disaster Recovery, Network performance. Setup the Backup schedule, archives and restoring data when require. Using SAN/TAN technology.
• Experience in BR* tools: BRSPACE, BRRESTORE and BRARCHIVE with reorg the tablespace, maintaining archive log and restore.
• Experience in IDOC, XI/PI change management, Transports, XI/PI error handling, XI/PI alerts, and SLD configuration and centralize monitoring the XI/PI system.
• Daily checklist for monitoring R/3 buffers, updates and system logs, background jobs, operation modes etc. Workload analysis.
• STMS transport rules for customizing and self-defined objects and troubleshooting.
• Transport Domain controller, TMS setup, transporting the customizing and workbench request, transport troubleshooting, and provide day to day production support to project users and maintaining the SLA with the customer for all the requests.
• Setup and refined Solution Manager CCMS thresholds and monitoring parameters for system performance and resources.
• Installation, Configuration and troubleshooting the SAProuter.
• Participate in change management meeting weekly for changes to the production systems.
• Analyzed and Resolved ABAP Dumps/Runtime Errors of Unusual Nature by researching through OSS Notes.
• Monitoring of Processes, Users, Disk usage, hit ratio, Buffer, swap memory, free table space and. data consistency, SAPOSCOLLECTOR.
• Performance monitoring including system log analysis, performance management and Output management analyze the performance of SAP systems in the landscape using Solution Manager.
• Kernel Upgrade patched, Support Pack, Notes and Add-on with SAPM SAINT and SNOTES including Vertex, Industry specific.
• Maintaining all the instance profiles in development, QA and production systems.
• Experience in Sarbanes Oxley (SOX) to compliance all the SAP systems.
• Scheduled batch jobs in background to cleanup spool requests, dumps, batch-input sessions, background jobs and monitoring.
• Good knowledge in ABAP Proxies, JAVA Proxies and others.
• Experience in Design, Configuration and Implementation of SAP NetWeaver Exchange Infrastructure (XI) Integration Repository and Directory.
• Involved in migrating all the SAP system landscape SAP servers data center.
• Migrated SAP applications from internal data center to another datacenter.
• Designed Data migration from SAP ECC to HANA using SAP SLT and Data Services.
• Leading the effort of optimizing the loading process of large financials ( SAP AR, AP, GL and Recurring ) data sets including both transparent and clustered tables from legacy ECC to HANA.
• Setup SaaS platform for clients and provide services.
• Lead Service Transition, designed support, communication/Escalation and monitoring plans for all Datacenter activities.
• Experience in level 4 Datacenter and layout.
• Experience in to setup DR Datacenter. Worked with Veritas InfoScale, Netbackup, backup server for SAP systems.
• Co-ordination and consolidation of moving data centers from one location to other multiple locations for SAP servers and landscapes.
• Install new Instance for OS migration for SAP systems and use backup technology.
• Experience in involve for cost reduction for datacenter strategy.
• Plan, Install and configure BI landscape Dev, Test, Production and Sandbox.
• BI Technical Administration, software upgrades, install support packages.
• Performance Analysis and Tuning of BW, evaluate statistical performance (BW statistics tools and BW Statistics Info Cubes).
• Oracle database performance parameter settings for BI using OSS notes.
• Experience in RSDDV - recreate index for BEx Business Warehouse Accelerator, RSDDBIAMON2, TREXADMIN, RSDDTREX REORGANIZE LANDSCAPE, BEx connectivity to BW system.
• Performance and monitoring of Query and Web performance, Extraction, Upload Monitoring (RSMO), Aggregates, Dimension and Fact tables. RSA3 to check the extractors in the source system. RSRT for Query monitoring. Running Sap Infocube Designs report to see Info Cube tables, no. of records and the ratio of dimension to fact tables.
• Data load monitoring of PSA, ODS, Loading into Info Cubes, Build Indices, Build Database Optimizer statistics after the load, Rollup aggregates, on a daily basis.
• Monitoring and deleting Data management pertaining to Aggregates, PSA, and Reorganization of Log tables, Basis related tables, Change log tables, BW Statistic tables, and tRFC and qRFC tables.
• Periodical maintenance of BI system by applying up-to-date Support Packages or Patches.
• Archiving objects in InfoCubes and ODS and delete the data for better performance.
• Connectivity of BW to other systems ECC 6.0, SCM, CRM.
• Developing, Testing and maintaining a good Backup and Restore strategy, Production refreshes for the BI landscape using Split-mirror, Tape and File Systems backups.
• Designed and developed Transport Management strategy for the BW and XI landscape.
• Installation, configuration and implementation of SCM implementing components APO, ICH.
• Installation of technical components SCM Server 5.0, Live Cache 7.5.0, Optimizer Server 4.1, and XI Content for ICH, EM, Portal Content Business Package, BI CONT, and SAP BW 6.40.
• Setting up communication from SCM to ECC, BW and CRM.
• Configuration of APO 4.1 to Live Cache Kernel 7.5.0 and also using LCAPPS for ECC and CRM communication.
• Monitoring performance tuning of APO server, Live Cache server for inbound and outbound tRFC/qRFC., ST03N, ST03G.
• Monitoring and performance tuning of Live Cache servers,
• Monitor and tune Optimizer Server with related transactions OPT11, OPT03, OPT03, OPT9, OPT12, COPT0, COPT1, COPT2 etc.
• Applying the current most up-to-date Live Cache parameters.
• Backup and Recovery, High Availability of SCM/APO/Live Cache Servers.
• Troubleshooting all SCM/APO, EM and ICH related issues with application teams.
• Applying the latest version of qRFC in ECC and APO for better functionality and performance.

Environment: SAP R/3 ECC6.0, SAP NetWeaver 04s, BI 7.0, XI/PI 3.0/7.0 EP 7.0, WAS 6.40, SRM, SCM, Livecahe, Oracle, UNIX, Windows Server, SQL server, Veritas cluster and Netbackup.

Confidential

Netweaver Basis/Infrastructure Administrator

Responsibilities:

• Trouble shooting system problems by analyzing system log, update monitoring, alert monitors, system traces, and lock entries, system dumps.
• Supporting the project for Sun UNIX hardware refresh for SAP system from Solaris 8 to Solaris 10 and Sun hardware M5000, T5240 with EMC Clarion.
• Implementation, installation, configuration and production support for landscape ECC 6.0, PI 7.0, BI 7.0, SCM, CRM and Enterprise Portal Server.
• Installation and Support for SAP system in Windows server and AIX UNIX 5.0 with SQL server and DB2.
• Appling Support packs, configuration and post installation of BI 7.0 in landscape.
• Applied Bolt-on and other third party tool to support the landscape.
• BW Data Load Monitoring and Performance Tuning.
• Providing day to day support for Enterprise Portal, ECC and BI.
• Supporting Federated portal, UME User Management, Java transports, JSPM, performance tuning for JAVA J2EE, Java patches.
• Performed client copy, system copy, and import/export.
• Storage management and monitoring critical table spaces like Oracle table spaces, Basis table spaces, application table spaces etc. for extent overflow, table space overflow and free space problems with BRTOOLS.
• Doing re-orgs of table spaces, tables and indexes based on internal & external fragmentation, block chaining etc.
• Support for OSS connection, SAProuter and access to SAP.
• Experience in installing SAP component on Windows platform with SQL server database running ITS server.
• Applying Support pack, Kernel patches and Notes.
• Supported retail customers for CRM.
• Configuration of SCM, CRM to XI and BW connectivity.
• Day to day Oracle database support, monitoring the database tablespace, disk space, Archiving log space on ERP SAP R/3 application and Open text.
• TMS to administer transport systems and configured the transport routes, Transport change requests between different clients and system.
• Trouble shooting system problems by analyzing system log, update monitoring, alert monitors, system traces, and lock entries, system dumps.
• Providing the support for user globally in different time zone.
• Applying Support pack, Kernel patches and Notes.
• Backup strategy for SAP/Oracle database, Schedule Backups, Disaster Recovery and off siding.
• Maintaining the Oracle patches, test and apply the new patches to Test, QA and Production systems.
• Performance analysis and tuning parameters in terms of memory, disk, CPU, Network and other misc. parameters.
• Configuration and Using Solution Manager 7.0, 7.1 for EWA, Monitoring, CUA, and Maintenance Optimizer.
• Resolve day to day issue with BI 7.0, XI/PI and created the SOP (Standard operating procedure) for daily monitoring.
• Email SCOT configuration, fax and other communication method from BI, XI, and SCM to ECC 6.0.
• Installation, configuration and implementation of Enterprise Portal 7.0.
• Performance and tuning of J2EE engine in terms of TCP/IP, Thread management, HTTP service compression, PCD Config. PRT Config. Using Config tool and related file properties.
• Installation and configuration SAP Cryptolib software for client certifications and authentication.
• Performed configuration of central integration server, message archiving for adapter engine and connecting business systems to SLD.
• Experience in interfaces to receive and distribute data to/from SAP R/3 to/from legacy systems LSMW.
• Configure STMS for Test, QA and Production landscape, perform transports and troubleshoot the transport problems.
• Perform JAVA transport for Portal and XI/PI. SDM for third party software in Enterprise Portal and JAVA stack.
• TMS configuration to set up automatic transports every hr. to other systems in the landscape with approval procedure and dependency of change requests by assigning to projects.
• Using CCMS agents to check the alerts in various SAP systems.
• Used traces and display authorization checks reports for resolving the end user problems.
• Worked with the security requirements for Sarbanes-Oxley (SOX) compliance framework using SOD in SAP Applications with emphasis on internal control requirements.
• Working with technical Infrastructure team to setup the network bandwidth for SAN/TAN environment to perform the faster Database Backups.
• Monitor daily Oracle Database backups and request for restore.
• Installation, configuration and implementation set up for dual stack JAVA and ABAP landscape Netweaver 7.0 PI system.
• Technical configuration of Integration Builder, Repository, Directory and Integration server.
• Installation configuration of SLD, UME, Adapter Engine which has IDOC, RFC and Standalone adaptors. Provide day to administration and troubleshooting for PI landscape.
• Connectivity with Solution Manager for Central Monitoring infrastructure.
• Setting up High-Availability Switch Over environments for XI/PI.
• Performance and Tuning of PI Java VM tuning, Application and Database level tunings.
• Archiving setup for XI/PI using SXMB ADM, SARA, SPRO, XMS SARA and SARI.
• Monitor inbound and outbound messages for XI/PI system and ECC 6.0.

Environment: SAP R/3 ECC6.0, SAP NetWeaver, BI, XI/PI, EP 7.0, WAS 6.40, SRM, SCM, Livecahe, Oracle, UNIX and Windows Server. CRM, SRM.

Confidential

Basis Administrator

Responsibilities:

• Implementation, Testing and Production Support for SAP systems in UNIX Sun Solaris, HP-UX and Windows Server with SQL server.
• TMS to administer transport systems and configured the transport routes, Transport change requests between different clients and system.
• Setting up TMS system component for automatic transports release from DEV to other systems.
• Performed Client Copy, Homogenous System Copy and System Refresh of QA and PRD system.
• Setting up backup schedule for several databases using Oracle RMAN.
• Applying patches to Oracle & Web server.
• Restoring, repairing, trouble-shooting database related problems.
• Database performance tuning in regards to application, sql, buffers, table scans etc.
• Restoring, repairing, trouble-shooting database related problems.
• Monitoring database & web servers’ performance by looking Confidential various buffers.
• Setting up, trouble shooting printers Confidential the manufacturing facility.
• Ongoing Oracle database support, monitoring the database talespace, disk space, Archiving log space on ERP SAP R/3 application and Open text.
• Implementing Central Standalone servers for CUA, Solution Manager, SLD and TMS and CMS for different landscapes.
• All the of Basis starting from Installations, Migrations, Upgrades, Trouble Shooting, Performance Tuning (OS, Database, R/3), Third Party Interfaces, Communication with Developers, Functional.
• Configuration of SCM, CRM to XI and BW connectivity.
• Refreshes for both ABAP+JAVA stacks to test and training systems using backup, restore and re-configuring Java stack and export/import the database schema’s for Abap and Java.
• SCM, CRM, SRM, MDM landscapes which includes Sandbox, Dev, Test, Prod and Training systems.
• Setup policies and procedures of Sarbanes Oxley for all SAP and interfaces to SAP landscapes.
• Production refreshes to other test and iteration systems for users, functional configurations and developers to test in pre-production environment.
• Load balancing for the application servers in production environment.
• Installation, Configuration and troubleshooting ITS servers.
• Providing the production support SAP system landscape.
• Database monitoring for space utilization & performance tunings.
• Open / Closed SAP services connection via SAP Net R/3 Front-end to SAP for remote consulting.
• Experience CIF error handling, CIF queues, Background jobs to manage the APO core interface and monitoring the CIF using CIF cockpit.
• Appling support package for entire landscape and kernel upgrades.
• Performing daily administrative activities such as Alert monitoring, Scheduling periodic jobs, background processing, R/3 buffer monitoring (CCMS), database monitoring, system logs etc.
• Preparation of daily / monthly monitoring reports.
• Identifying performance bottlenecks and implementing database reorgs, rebuilding indexes during planned outage for production systems.
• Trouble shooting system problems by analyzing system log, update monitoring, alert monitors, system traces, and lock entries, system dumps.
• Providing the support for user globally in different time zone.
• Setting up project plans for the upgrades and project management.
• Coordinating with application teams, doing research to resolve issues, concerns in terms of OSS hot packages, training etc.
• Configuring SPAD for various printers through out the enterprise wide through UNIX Operating system and third party tool Dazel.
• Changing the parameters corresponding to SAP/Database/Platform notes in OSS.
• Interact with the Business analysts, End users to design database for their business applications.
• Setting up, configuring and implementation High-Availability, Disaster Recovery for all SAP systems using Veritas cluster.
• UNIX printer system administration for SAP servers.
• Network design and management between SAP servers.
• Using Veritas to configure the volumes, plexes and sub-disks, mapping the links to the EMC and other storage drives.

Environment: SAP R/3 ECC6.0, SAP NetWeaver 04, 04S, BI 7.0, XI/PI 3.0/7.0 EP 7.0, WAS 6.40, SRM, SCM, Livecahe, Oracle, UNIX and Windows Server. CRM 4.1, SRM 4.0.

Confidential

Network/System Administrator

Responsibilities:

• Experience in UNIX administration and support of sun server E450, 4500, 5500 for tool free 800 and European tool free numbers software using database Oracle, DB2, which used to saved the information in database.
• Experience to maintain service requests, trouble tickets for Data Center and work with different groups to install hardware and software. Managing changes, analysis, and supporting the Data Center infrastructure.
• Experience in Veritas Volume Manager VxVM and Veritas file system ver. to support UNIX server.
• Working as a System Administrator, which includes installation, upgrade, system monitoring, diagnosis, configuration, performance tuning to optimize effectiveness of memory use and disk management; support and maintenance of UNIX operating system on a variety of UNIX server.
• Working with various versions of UNIX Sun Solaris 2.6, 8, HP-UX, AIX UNIX file system.
• Experience in Veritas file system and clustering to setup UNIX server for High Availability including Virtual IPs. Experience in SAN/TAN for UNIX systems.
• Experience in web server to support the Telecom data for customer to get the information.
• Managing CPU usage and memory on multiple CPU machine on UNIX Server.
• Used the network appliance (netapp), installed the hardware’s-memory, disk drive, storage array, Ethernet card, modem, printer, s-bus card.
• Setting up the file systems layout by creating Volume group, Logical Volumes, File Systems, raw devices and swap space on the physical Volumes.
• Working with NFS, NIS, automounter and DNS.
• Experience in DNS, managing routing tables and analyzing snoop/tcpdump reports to test ARP and RARP response times.
• Monitoring performance of the disks, CPU, memory and network for several systems.