Alejandro Contreras

**** ******* ***** ***.

Mississauga, ON

L5N 7P4

T. 905-***-****

C. 647-***-****

E-mail: adur7w@r.postjobfree.com

Objective

Provide exceptional value to any business initiative through the practical application of Information Technology.

Summary

Dynamic, results-driven professional with excellent qualifications and experience in Microsoft Azure / Microsoft 365 /AWS and virtualization architecture / designs / implementations, and systems/storage management and administration. A versatile self-starter able to conceptualize and generate new ideas, analyze problems, and develop solutions.

Professional Skills

Proven leadership in the delivery of technical solutions and operational excellence in growing organizations. Experienced in managing multiple teams comprised of local/vendor staff and accomplishing projects on time and within budget. Mutli-site WAN/LAN/networking and in depth understanding of Server, PC, Storage, Virtualization, and cloud platforms. Strong technical knowledge of current network hardware, protocols, and standards as well as cloud integration experience with multi- site organizations. Experience in IT infrastructure planning and development. Strong understanding of management principles, practices, and procedures. Thorough understanding of program and project management principles.

Professional Experience

November 2020 to Current – Valencia IIP

Technology Architecture and Chief Information Security Office Lead

• Led the virtual Chief Information Security and the Technology Architecture teams and worked on multiple client projects.

• Developed and built the virtual Chief Information Security Office (vCISO) service and product line from inception, including costing, pricing marketing, sales, and delivery.

• Delivered vCISO services to multiple client organizations and helped clients align to cybersecurity standard, including NIST, CIS, ISO27000, PCI DSS and attain Cybersecure Canada Certification.

• Evaluated and selected tool sets and partners to deliver vCISO products.

• Worked on planning and executing PEN Testing, Vulnerability Assessments, Environment Assessments, Microsoft Active Directory & Directory Services Health Checks, AWS/Azure Cloud Cybersecurity Assessments, API Security Checks, etc.).

• Developed and delivered Cybersecurity and Technology Roadmaps, Cybersecurity and Technology Future State planning, as well as Architecture and Tactical remediation plans.

• Developed architectural models that described corporate and client organization technology solutions, current state, and recommendations for future state, provided oversight and direction through to execution.

• Provided comprehensive recommendations and direction through proficient understanding of infrastructure, software, data, and systems engineering.

• Worked with leadership teams within Information Technology, Security Operations, Human Resources, Legal and Compliance teams to develop and maintain policies, standards and guidelines that directed the selection, development implementation and use of information technologies within the enterprise.

• Managed architectural risks associated with IT assets through the development, use and promotion of the appropriate standards and policies.

• Led several teams to work with various businesses and IT stakeholders to demonstrate and show business value of enterprise-wide, shared infrastructure and to show value of new strategic platforms being considered.

• Developed architectural strategy and roadmaps for legacy application refresh and/or replacement, by utilizing a cloud first philosophy. April 2020 to Current - Long View Systems

Enterprise & Solutions Architect Lead

• Managed a consulting and delivery team of Infrastructure and solutions architects with twelve direct reports; including supervision, scheduling, and evaluation actions to provide quality work products for engagements.

• Completed Enterprise Architecture reviews for clients within the four enterprise architecture domains (business, data, application, and information) focused on determining current state, defining desired state, conducting gap analysis, prioritizing actionable items, establishing sequence for the actionable items, and developing technology road maps.

• Generated and prepared Statements of Work, Service Estimates and Statements for Resources for several projects across the organization.

• Helped built formal Virtualization bench (Citrix, VMware, and Windows Virtual Desktop) alongside processes and templates for the organization.

• Projects included but not limited to:

a. Several Citrix upgrades from 7.15 LTSR to Citrix 1912 and Citrix 1912 CU1 b. Deployment of Highly Available Citrix 1912 CU1 on premise and on Azure, including Citrix ADC with Access Gateway and Load Balanced services and GSLB. c. Microsoft WaaS deployments using Microsoft SCCM and Azure Cloud Management Gateway.

d. Microsoft Skype for business migrations to Microsoft Teams SaaS platform. e. Microsoft Virtual Desktop deployments on Microsoft Azure utilizing single and multisession systems.

f. Microsoft Exchange migrations deployments to Microsoft Exchange Online.

• Suggested ideas to reduce costs in IT to business leadership.

• Implemented ITSM systems for several client organizations.

• Deployed and managed SentinelOne XDR technology. February 2016 to April 2020 - Allianz Global Assistance Inc. Infrastructure Technology Lead

• Managed Infrastructure team with ten direct reports, including supervision, scheduling, and evaluation actions to provide quality work products for engagements. Developed yearly budgets for the infrastructure team and yearlong projects. Developed and executed short- and long-term strategic plans for the team according to business requirements.

• Performed varied and complex duties and tasks that required independent analysis while implementing multiple technology solutions to meet customer needs.

• Demonstrated expertise in delivering functional and technical requirements on complex customer engagements. Led solution design and implementations delivering with high quality while meeting time and budget constraints.

• Managed and personally implemented multiple projects and provided coaching, guiding and feedback to team members to develop their project communication and collaboration skills. Effectively consulted with corporate and client management teams to establish and maintain regular written and in-person communications regarding IT infrastructure projects and activities to ensure visibility and transparency.

• Projects included but not limited to:

• Cloud migration to Azure and Office 365.

• Data center migration projects.

• Setup a local data center with 31 ESXi hosts running ESXi 6.0. ESXi hosts were built to boot from SAN.

• Configured 5 separate clusters in the local data center to segregate hosts for specific purposes (PCI/non-PCI/Protect B, etc.)

• Setup and configured VMware distributed vSwitches, port groups, for each cluster.

• Setup and configured 148 Data Stores on NetApp 2000 and 4000 series filers.

• Setup a Remote data center with 31 ESXi hosts running ESXi 6.0. ESXi hosts were built to boot from SAN.

• Setup VMWare Update Manager to patch the ESXi hosts and update the VMware tools on the VMs.

• Upgraded ESXi environment to ESXi 6.5 and then ESXi 6.7

• The setup and testing of disaster recovery solutions using VMware Site Recovery Manager, Veeam and Zerto.

• Managed regular backup schedules with Veeam.

• Managed Citrix implementation of XenDesktop 7.11 and with Citrix PVS 7.11 for insurance claims call center environment.

• Managed Citrix upgrades to 7.15 LTSR.

• Managed setup of direct access to Citrix using Citrix ADCs with MFA using RSA and Microsoft Active Directory.

• Managed migration from Exchange 2013 to Exchange 2016 and managed further updates from CU3 to CU15.

• Led the setup of Web Application Firewall (Imperva) technology to secure Internet Facing Web Applications.

• Server Security Enablement – creating and deploying server lock down templates

(Internal vs. External facing web servers, infrastructure systems like Domain Controllers, RDP Servers, File Servers, etc.), Application servers, DB servers, etc.

• Extended security to the vitalization layer. Developed the architecture and plans to extend and manage network security into the hypervisor and physical chassis.

• Performed MS Active Directory (AD) and DNS health checks for client and provided analysis, plans and execution to improve the AD and DNS design, security and the supporting group policies and security templates for the environment.

• Setup training programs for client teams to allow for the successful transfer of new technologies.

• Created deployment guides and supporting documentation such as run books, build books, and network diagrams.

June 2014 to February 2015 - Toronto Hydro

Infrastructure Architect – Data Center Migration Project Lead

• PMO Technical lead for the Data Center Migration project.

• Managed technical project team with eight direct reports, including supervision and evaluation actions to provide quality work products for engagement.

• Developed and worked on the migration plan of 3000+ virtual machines and physical servers from two existing data centers to two new datacenters.

• Analyzed details provided by BAs to create high level designs (HLDs). Completed HLDs by breaking down the solution into system modules and representing each module and the relationship between each module in high level workflows, data flows and architecture diagrams. The HLD also included the initial definition of possible vendors as well as high level costing (+-20% variability on costing).

• Created low level designs (LLDs) by taking initial HLDs and developing detailed functional logic for each component/module including the number of systems, system location and criticality, server type (Physical vs. Virtual vs. UNIX vs. Wintel), number of servers, middle ware (IBM WAS, MS SharePoint), database (MS SQL, Oracle), number of environments needed (PROD, DR, QA, TEST, DEV), storage and network requirements, dependencies, as well as architecture diagrams for the entire solution and each module/environment selected (protocol flow diagrams, network connectivity, storage connectivity and provisioning, etc.). Provided low level costing for the solutions (+-10% variability on costing).

• Acted as the solution lead; managed challenging, complex and conflicting business needs and reconciled them in valuable solutions. Integrated functional, technical, and organizational concepts and objectives into a coherent overall solution.

• Coordinated and aided the implementation of LLDs by creating installation documents, Production Support transition documents, Disaster Recovery documents, etc. This required the use and in-depth knowledge of the following technologies: o VMware vSphere 4.1, 5.1 and 5.5.

o VMware Site Recovery Manager 5.5

o EMC Recovery Point

o Wintel/servers: MS W2K3, W2K8, W2K12

o MS AD, DNS, WINS.

o Advanced Interactive Executive (AIX), RHEL and CentOS. o LPAR replication for non-rootvg disks

o Cisco network switches, voice gateways and F5 BigIP load balancers. o EMC VNX 5400, 5500, Brocade, Cisco.

o Oracle, MS SQL.

o Apache Web Server, Websphere, Sharepoint, IIS.

o MS Remote Desktop Services.

• Managed complex system integrations between Microsoft, Oracle, AIX, and RHEL systems.

• Required deep, hands-on experience with the design and implementation of IT infrastructure technologies.

• Led the POC and Pilot teams for the XenDesktop and VMWare View VDI infrastructure selection and deployment project.

• Led the POC and Pilot teams for the selection, testing, validation, and migration from Windows XP to Windows 7 and Windows 8.

• Utilized Citrix XenDesktop 7.1, Citrix PVS 6.1 and VMWare vSphere 5.5 infrastructure to provision Windows 7 VDI for the corporate migration from Windows XP to Windows 7.

• Needed deep understanding of the advantages, pitfalls and costs of applications and technologies as well as integration of various technical platforms.

• Required a strong analytic and technical ability to look at complex technical landscapes and recommend key business focused solutions.

October 2013 to June 2014 Express Scripts Canada

Infrastructure Architect and Lead

• Responsible for translating business requirements into IT solutions, considering the complexity of existing systems.

• Analyzed details provided by BAs to create high level designs (HLDs). Completed HLDs by breaking down the solution into system modules and representing each module and the relationship between each module in high level workflows, data flows and architecture diagrams. The HLD also included the initial definition of possible vendors as well as high level costing (+-20% variability on costing).

• Created low level designs (LLDs) by taking initial HLDs and developing detailed functional logic for each component/module including the number of systems, system location (T1/DMZ vs. T2/Middleware, vs. T3/Backend, vs. T4/Corporate), server type (Physical vs. Virtual vs. UNIX vs. Wintel), number of servers, middle ware (IBM WAS, MS DAX, Oracle Web Logic), database (MS SQL, Oracle), number of environments needed (PROD, DR, QA, TEST, DEV), storage and network requirements, dependencies, as well as architecture diagrams for the entire solution and each module/environment selected (protocol flow diagrams, network connectivity, storage connectivity and provisioning, etc.). Provided low level costing for the solutions (+-10% variability on costing).

• Implemented LLDs by building servers, installing applications (sometimes with vendor support), creating installation documents, Production Support transition documents, Disaster Recovery documents, etc. This required the use and in-depth knowledge of the following technologies: o Wintel/servers: MS W2K3, W2K8, W2K12

o MS AD, DNS, WINS.

o HP-UX, Solaris, RHEL and CentOS.

o Cisco network switches, voice gateways and F5 Big IP load balancers. o HP EVA, 3PAR Store SERV, Falconstore, Brocade, Cisco. o Oracle, MS SQL.

o Apache Web Server, WebSphere, SharePoint, IIS.

o MS Remote Desktop Services.

o VMware vSphere 4.1, 5.1 and 5.5.

• Led the POC team for the XenDesktop and VMWare View VDI infrastructure selection project.

• Led the POC team for testing, validating, and migrating from Windows XP to Windows 7.

• Worked with Canadian and U.S. based business teams to create, develop and implement the required infrastructure as required by business projects.

• Acted as the solution lead; managed challenging, complex and conflicting business needs and reconciled them in valuable solutions. Integrated functional, technical, and organizational concepts and objectives into a coherent overall solution.

• Designed and implemented multiple projects including, but limited to: o VMware upgrade from vSphere 4.1 to 5.5

o Corporate Secure File Transfer Solution,

o Corporate Fax Services solution upgrade

o MS Remote Desktop Services farm

o Oracle application services upgrade

o Storage migration from HP EVA arrays to 3PAR Arrays.

• Managed complex system integrations between Microsoft, Oracle, HP-UX and RHEL systems.

• Managed Brocade 5300 SAN infrastructure for Montreal and Toronto data centers.

• Deployed Virtual Center Operations Manager in the organization.

• Ensured technical integrity and quality of the solutions.

• Generated conceptual/logical architectures, system documents, testing analyses, test plans, and risk assessments.

• Lead the analysis of new/existing infrastructure architectures, specifying long term direction, and ensured engineering platforms met reliability expectations throughout the process.

• Required deep, hands-on experience with the design and implementation of IT infrastructure technologies.

• Needed deep understanding of the advantages, pitfalls and costs of applications and technologies as well as integration of various technical platforms.

• Required a strong analytic and technical ability to look at complex technical landscapes and recommend key business focused solutions.

• Effectively positioned various alternatives and used a structured approach for selecting the best IT infrastructure solution by deploying Proof of Concept (POCs), completing comparative analysis and evaluations of the technology and, and by articulating the solution's value. March 2013 to October 2013 - JD Irving Inc.

VMWare/Citrix Architect

• Provided design, architecture, and implementation services to the organization with extensive practical application in both VMware and Citrix environments. The role focused primarily on technical implementation with some consulting and business focus.

• Developed and worked on the migration plan of 1000+ virtual machines. The plan was two phased: 1. the migration from older Dell blades running ESX 4x and 5x hypervisors onto temporary Cisco UCS gear for transformation purposes, and 2. the final migration onto UCS gear at a separate physical data center. The plan and its execution involved the use of Extended VMotion across high-speed WAN links, and the use of EMC Recovery Point for LUN replication across the two sites.

• Developed end to end solution architectures for different projects, beginning with the analysis of the problem, technology/vendor selection, architectural design creation and elaboration

(high and low level) including application and network flows, to the final delivery, documentation and implementation of the system and hand off to production support. The organization followed the Gartner model for Enterprise architecture.

• Provided leadership for complex infrastructure environments and projects as well as developed technical governance and standards for the same.

• Contributed to the development of project plans by providing input to project charters, deliverables, cost/benefits analysis, timeline estimates, scope, and controls.

• Collaborated with business leaders, IT professionals, and vendors ensuring that management was kept informed and that problems and issues were escalated appropriately and clearly communicated.

• Worked on the transformation on temporary Cisco UCS gear which included VMWare Tools updates, VM hardware upgrades, and VMFS 3 to VMFS 5 data store migrations.

• Deployed and managed the first VMWare View 5.1 (VDI) infrastructure for the organization and deployed 2000 Window 7 virtual PCs for contractor use abroad. The solution was composed of a dedicated Virtual Center, Transfer, Composer and Connection servers on ESX 5i hosts.

• Reviewed the organization’s environment and provided best practices for the creation of monthly, weekly, and daily checklist.

• Reviewed existing infrastructures to provide and implement leading practices as well as performance tuning for the environments.

• Created multiple run-book documents for the organization to use with their support team abroad.

• Managed and worked on the organization’s XenApp 4.5 Citrix farm. The farm provided very high-quality graphic services to several remote offices in New Brunswick.

• Managed the VMware vSphere Replication environment for the organization using SRM 5.1

• Developed and worked on the P2V migration of 400 physical servers.

• Developed and worked on the P2P migration of 12 physical servers.

• Worked with Virtual Center Operations Manager in the organization.

• Worked with and managed Microsoft Windows Server 2008 R2 and 2012 R2 servers and other technologies including Active Directory, SQL Server 2008 R2, Cluster Server, Distributed File system (DFS), DNS, DHCP and WINS.

October 2010 to March 2013 - Resmor Trust Company a unit of Ally Bank. Infrastructure Architect and Infrastructure Lead

• Served as the Solutions Architect for the Resmor Trust’s IT initiatives and worked with U.S. teams to develop/design projects for Canada. Followed the Gartner Architecture methodology. The organization followed the Gartner model for Enterprise architecture.

• Provided leadership for complex infrastructure projects and environments as well as the development of technical governance and standards.

• Contributed to the development of project plans by providing input to project charters, deliverables, cost/benefits analysis, timeline estimates, scope and controls.

• Collaborated with business leaders and led IT professionals and vendors while ensuring the SLT was kept informed and that problems and issues were escalated and clearly communicated.

• Created the Solution Architecture for the Secure File Transport solution utilizing AxWay transport services for a QA, PROD and DR environment. Lead the project through its inception right into delivery.

• Created the Solution Architecture for the Data Warehouse Reporting System using IBM Cognos Reporting Services 10.1, Oracle 11i, and Cognos Web Interface server using MS Windows 2008 R2 platform. The solution was developed for QA, PROD and DR environments. Lead the project from inception to delivery.

• Created the Solution Architecture for the implementation of Highly Available Hitachi AMS2000 series arrays in the QA, PROD and DR environments. Developed and executed the migration plan to move away from the NetApp NAS devices for all of the organizations technologies including Oracle database clusters (PROD/QA/DR), MS SQL cluster (PROD/QA/DR), MS Exchange Cluster

(PROD/QA/DR), VMWare Virtual Center with SRM for VM failover in DR scenario (PROD/DR), and client File Migration.

• Operated and executed performance-tuning on Hitachi AMS 200, 500, 2100 and 2300 storage arrays as well as NetApp FAS2050 filers.

• Managed and configured SAN/NAS remote replication technologies: Hitachi True Copy Extended and NetApp SnapMirror.

• Managed the three VMWare DRS/HA cluster (PROD/DEV/DR) environments on ESX4i with tools such as VMWare Converter, VMWare Update Manager, VMWare Site Recovery Manager and Site Recovery Manager Adapters on NetApp 2050 and AMS 500, 2100 and 2300 arrays.

• Managed F5’s BIG IP VE Load Traffic Managers (LTMs) for all internal load balancing, including Citrix Access Gateways, MS Active Directory, Domain Controllers, DNS, WINS, internal Share Point Sites and Cognos Application servers.

• Participated in the planning and implementation of policies and procedures to ensure storage provisioning, efficiency, and maintenance that is consistent with industry best practices, and regulatory requirements.

• Developed the strategy, planning and development of long-term strategic goals for enterprise storage.

• Performed tasks necessary to fulfill service level agreements with end-users regarding storage allocations, limitations, security, and availability.

• Anticipated, mitigated, identified, responded to, and resolved issues with storage devices, storage access, storage performance and data retrieval.

• Researched and made recommendations on storage/virtualization products, services, and standards in support of procurement and development efforts.

• Monitored, analyzed, and predicted trends for storage equipment performance, space allocation, and data growth to recommend enhancements to the IT storage team.

• Developed routines for end-users to facilitate storage best practices, including automated storage provisioning using Northern Storage product suite with the NetApp filer devices.

• Managed Brocade 5100, 7800, 300 and 200e series FC switches, fabric and zoning.

• Provided recommendations to Executive leadership team on VDI technologies and built and presented Citrix XenDesktop 5 environment.

• Managed the enterprise Citrix environment using Citrix XenApp 5 on Windows 2003 server.

• Created required reports in response to business user needs.

• Developed, documented, and maintained operational processes and tasks.

• Served as backup administrator for RHEL 5 servers in the environment. May 2009 to September 2010 Citrix Systems Inc.

Principal Consultant

• Led, mentored, coached and helped develop the skills of team members and attracted new talent to the team.

• Led several projects and teams with multiple clients in both Canada and the U.S.: RBC, CIBC, The Globe and Mail, McCain Foods, The City of Winnipeg.

• Proactively detected technical deficiencies and developed practical, workable solutions to problems. Established myself as a technical expert with broad industry knowledge in XenApp, EdgeSight, Networking, Storage and VMWare ESX Server.

• Architected and implemented Citrix XenApp farms and upgraded farms from previous versions of Presentation Server to XenApp.

• Installed and configured Citrix EdgeSight and Password Manager for customer environments.

• Recommended and executed best practices for customers running ESX 3.0 and 3.5 DRS/HA clusters, Citrix XenApp, and other Citrix Components.

• Deployed multiple XenServer clusters for customers migrating from ESX to XenServer.

• Implementation Enterprise application streaming and hosting with Citrix XenApp Server 5.0.

• Worked on the deployment of a 3000 plus VDI Windows XP and Windows 7 environment utilizing using XenDesktop 5.0

• Managed all day to day operations and worked with IBM DS4000 and 4700 arrays using IBM Storage Manager.

• Worked with and deployed Citrix NetScalers in multiple site designs. December 2007 to May 2009 - Canadian Broadcasting Corporation Storage and Virtualization Architect

• Completed an in-depth analysis of the customer’s virtual, storage and MS Active Directory environments and provided a fully documented remediation plan for their executives.

• Upgraded the customer’s VMWare infrastructure from VMware Virtual Center 1.4.1 to VMware Virtual Center 2.0.2 Update 3. Fully clustered their SQL database, license server and Virtual Center deployment using MSCS on Windows 2003 enterprise servers.

• Upgraded the entire customer’s ESX infrastructure to VMWare ESX server 3.0.2 Update 1.

• Developed the national monitoring and backup strategy for the customer’s ESX deployments using Virtual Center and HP SIM integrations to BMC’s Remedy and setup national NFS gateways as data stores for backup purposes. This provided the customer with the ability to do snapshot and file level backups on both Windows and Linux Virtual machines. The NFS gateways used the standard HP Data Protector client to move backups to tape.

• Developed the national upgrade plan of the customer’s Citrix Metaframe XP 1.8 farm to Presentation Server 4 including the migration of the customer’s data store to a clustered SQL server.

• Worked on the setup and configuration of FCIP connectivity using Brocade 48000 directors, joining the Toronto and Montreal SAN islands. Setup NFS gateways to HP EVA 6100 arrays and worked on the setup of the first iSCSI connectivity for Disaster Recovery ESX clusters.

• Used Brocade 48000 directors to move the company to a Core/Edge setup at the Toronto and Montreal data centers. The edge switches used are Brocade BR-4120s.

• Performed an in-depth analysis of the customer’s active directory infrastructure and provided recommendations to reduce the size and number of objects in the directory. April 2004 to December 2007 TELUS Inc.

Tier 3 – Team Lead

• Managed the 7x24 Tier-3 technical team with twelve direct reports, including supervision, scheduling, evaluations, mentoring and all other actions to provide quality work products for the team’s engagements.

• Provided in depth technical consulting for technology projects with our clients.

• Architected storage at the TELUS Internet Data Centers. Analyzed customer environments, presented the results and developed/implemented system configurations.

• Worked with the TELUS pre and post sales engineering teams to architect solutions for large and complex deals. My involvement was end to end and I managed the solutions from the initial development right through to implementation and later maintenance. Some of the projects I was involved with included Virtualization, Exchange/SQL clustering with MS Cluster server, and MS Exchange designs/upgrades.

• Designed and completed large consolidation/virtualization projects with VMWare ESX 3.x and Microsoft Virtual server technologies.

• Designed and implemented Microsoft Clusters and ESX farms on several types of storage arrays ranging from HP MSA 1000s to larger SAN based arrays such as EMC’s CLARiiON CX3, CX500 series and Hitachi’s 9980/9990 arrays. Worked with McData 6480 and 6048 directors and added Mi10K directors to the environment.

• Helped in the SAN Zoning remediation project at the Ontario Data Centers and developed the documentation necessary to control proper zoning.

• Expanded the SAN core with additional Mi10K Directors added to the existing McData 6140 and 6064 configurations.

• Managed data replication services between the TELUS Internet Data Centers in Toronto and Calgary using Nishan's IP storage switches and Hitachi Data Systems’ True Copy.

• Architected, designed, and implemented Microsoft’s Active Directory for enterprise clients and well as the design and implementation of Citrix Metaframe farms.

• Worked on the implementation of new technologies such as large scale fully redundant call centers, global WAN connectivity.

• Managed the deployment, maintenance, upgrade, and support of systems, including networks, servers (HP DL360s, DL380s, Dell Power Edge 6400s, and IBM x-Series) and operating systems including Microsoft Windows 2003/2000/NT 4.0, Redhat Enterprise 4 and 5. Projects ranged from simple two-tiered web applications to complex SAN attached 64-bit server clusters providing back-end services for front end application and web services.

• Managed critical customer projects such as the upgrade of clients from a Windows 2000 native mode domain to a Windows 2003 domain.

• Worked on upgrading Microsoft Exchange 2000 services to Exchange 2003 and in the delivery of high redundancy

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