SUMMARY

• Experienced on designing, deploying, administrating, maintaining and supporting enterprise Microsoft platforms and customized business applications
• Experienced on managing project requirements, developing project plans, diplomatic business approach on global customer relationship, allocating work, conducting status meetings and customer reviews, Technical Support, System Administration and Network Management.
• 4+ years of experience as VMware/System Administrator with extensive experience in Data Center Environment using ESX server 3.5, 4.0,4.1, ESXi 4.1,5.1 and VSphere VCenter Server 4.0,4.1,5.0,5.1,5.5, 6.0 running Other VMware Products like VCenter Update Manager4.0,4.1, VCenter Lab manager 4.0, VMware View 4.5 and 4.0 and Site Recovery Manager(SRM) 4.1 4.0 on Linux/Unix and Windows environment.
• Expertise in ESX and ESXi servers - configuration, Installation, management and maintenance with High Availability, DRS, Vmotion, Storage Vmotion and Fault Tolerance.
• Support of a multi CISCO UCS Domain and VMware environment
• Understand process of cloud environment.
• Experience with ESX Configuration and Administration.
• Experience in VMware vRealize configuration Manager ( VCM)
• Experience in Installation and Configuration of Single Sign on Sever (SSO), VCenter Inventory Services and vCenter5.1,
• Experience on VMware operations Manager and vFoglight.
• Experience in SRM implementation and vCenter Heart Beat Implementation.
• Worked on P2V conversions and migrations of physical servers with different OS like Windows and Linux to virtual Platform using VMware converter.
• Implemented Rapid VM deployment preparing templates, cloning and exporting VM to OVF format.
• Worked extensively on Templates/Clones/Snapshots & Resource pools.
• Experienced on VMware VSphere Administration with Bare Metal installation, VM creation (Windows, Linux), Update Manager, Virtual Networking, Storage, VMware VSphere Client, Standalone Converter, Profile management.
• Experience with VMotion, HA, DRS, Cluster, SRM
• P2V and V2V migrations using tools like VMware converter /Plate spin/Double Take.
• Experience of using VMware Consolidated backup and Data Recovery appliances in backing up and restoring VM’s.
• Configured scheduled tasks, alarms and alerts, CPU, Memory and Network Disk monitoring in VCenter.
• Experienced Patch Management of hosts and VM’s using VMware VCenter Update Manager.
• Experience in installing and configuring storage technology such as SAN, NAS, ISCSI, and RAID.
• Expertise in installation, configuration and maintenance of Linux (Redhat, SuSE, Fedora, Ubantu, CentOS) and Unix (Solaris, HP-UX, AIX) Servers.
• Administer and support Citrix Virtual Infrastructure, XenApp; XenDesktop farms.
• Package and publish applications using App-V
• Experience Creating and Deploying Windows and UNIX Templates Using Virtual Center Server.
• Managed packages using RPM/YUM on Redhat Linux and maintaining patching on Solaris servers.
• Experience in installing, configuring, supporting and troubleshooting Unix/Linux Networking services and protocols like NIS, LDAP, DNS, NFS, DHCP, TCP/IP, Telnet, FTP, SSH, rlogin.
• Creating and Managing user accounts, system security, performance tuning, change management, Documents and procedures.
• Experienced in configuring RAID (Mirroring, striping and parity) using VERITAS volume manager (VXVM) and SVM.
• Experienced on VMware View (VDI) Implementation
• Experienced on Active Directory administration, accountability, security groups, distribution groups, replication, GPOsand FSMO roles, Clustering configuration and administration.
• Designing, installation, configuration, migration and administration of Microsoft Exchange server 2003 and 2007 in multiple sites with Installation, Configuration, Administration, Migration.
• Experience in installing, maintaining and managing various rack mounted and Blade servers from Dell, HP, and IBM.
• Experienced with HP Hardware with HP ProLiant DL 360, 380, 385, 585, HP Integrity rx 2620, IBM Infinity and xSeries servers, Dell PowerEdge 550, 750 Servers, HP Blade C 7000 Servers
• Excellence in Windows 2012/2008/2003/2000/NT-Active Directory server administration, Group Policy, VMware Esx. 5.5, 5.1, 4.0, 3.5 server/VSphere, Citrix XenApp.
• Worked on various SAN Fabrics (FC SAN,ISCSI SAN)and NAS storage
• Experience with windows Active Directory User Administration, Profile Administration.
• Experience with Creation, Configuration, Managing Windows, Linux servers on Virtual Infrastructure.
• Experienced on Linux Administration.
• Experienced with Monitoring tool HP SIM, CIM, Tivoli Enterprise Console
• Troubleshooting of network problems - Making physical changes to routers, switches
• Experienced in Supporting Win XP, Vista, WIN 7.
• Experienced on Service Delivery, Network and Systems support, Risk and Quantitative Analysis, Change/Content/Vendor /Incident/Inventory/Facility/Helpdesk/Management systems, Migration Projects.
• Experienced with Change, Incident, and Problem Management.
• Experienced on Web server administrations, IIS 6.0 and IIS 7.0, 7.5 administration.
• Experienced with SQL server for administration.
• Experienced with NAS, SAN.
• Experienced on EMC Networker Back UP and Recovery solution with Tape Library
• Configure HBA, Installing HBA drives and other HBA management, Storage allocation, Creating LUN.
• Good Understanding of RAID technology.
• Monitoring Wintel Server for the successful completion of daily backups, and also monitoring usage and disk usage, working with addressing Security, hardware and capacity issues.
• Experienced on SMS 2003, SCCM 2007. Software quality assurance and testing and Automation, Change Management, Patch Management, Running SMS / SCCM Reports, Implementing test plans, migration plans, and delivery plans
• Experienced on Batch File, VB Script and Power shell for Automation.
• Experienced on Microsoft Clustering Technology.
• Excellent analytical skills, managerial skills, adaptive to new environments, sound knowledge on administration and managing the enterprise networks, troubleshooting skills with ability to learn fast
• Experienced on team play and individual.
• Experienced working with Onshore and offshore Team.

TECHNICAL SKILLS:

Platform Experience: Compaq, HP and DELL Servers, Cisco Routers and Switches

Directory Services: Active Directory 2000/2003 Design, Infrastructure and Administration

Operating Systems: Windows Server 2012, Microsoft Windows 2008 R2, 2003, 2000, Linux, VMware Esx Server-Standard and Enterprise edition, Workstation/Windows 7, XP.

Virtualization: Experience in Designing, Administrating, and managing VMware VMware Esx. 5.1, 4.0, 3.5 server/VSphere, Hyper-V, Citrix Xenapp, XenDesktop.

Messaging Services: Microsoft Exchange 2010/2007/2003/2000/5.5 Server, Send Mail servers

Protocols: TCP/IP, DNS, DHCP, WINS, SNMP, SMTP, POP3, IMAP, LDAP, NNTP, SRP, Citrix ICA, IMA

Remote Management: VMware, Log Mein, RDP, VNC, Terminal Services, PC Anywhere, Telnet, FTP.

Monitoring: MOM, HP Open View, Send Mail console, Solar Winds.

Database: SQL SERVER 2005, Microsoft Access, Oracle 8 I and Informatica Tool, PL-SQL.

Backup Strategies: Arc Serve 6.6, Windows NT Backup, Backup Assist, VERITAS, Net Backup, Tivoli, Veeam Backup, EMC Avamar

Internet Application: Microsoft Proxy Server 2.0, IAS, IIS 6.0, IIS 7.0

Utilities: Update Expert, Ghost Image, McAfee, Norton Antivirus Administration and Roll out, Knowledge Base, Hot fixes on Windows AD/Windows Application servers, MS Visio 2003, 2007, MS Project 2003, 2007.

Tools: ADMT, Microsoft Best Practices Analyzer tool for AD and Exchange servers, Nslookup, RepAdmin, Network Trouble Shooting Tools, Performance monitor, Sysinternals suites.

Other Softwares: Tally, AutoCAD 14, 2000, 2007, Revit 2008, Adobe Photoshop 5.5, 6, 7, PageMaker 6.5, Dreamweaver CS 6.0

PROFESSIONAL EXPERIENCE:

Confidential

System Engineer

Responsibilities:

• Working with VMware VSphere 4.x and 5.x.
• Experience in building/maintaining Windows server 2k3, 2K8 R2., 2012.
• Provide engineering solutions as well as drive infrastructure design implementation standards for the environments.
• Experience in installing and managing Client Server Actions.
• Install new/rebuild existing servers to support new requirements and/or server refresh activities
• Configure hardware, peripherals, services, settings, directories, storage etc. in accordance with standards and project/operational requirements.
• Resolve complex issues related to Implementation, infrastructure performance, capacity and availability.
• Performed backup and restore of VMware host server configuration, Virtual Machine backup, snapshot, P2V-V2V conversation with VMware converter and with other third party.
• Working with VMware server build from automated build as well as from scratch.
• Working with VCenter for patching, vmtools upgrade, Event logs, monitoring, storage provisioning and Troubleshooting
• Provide and implement data and application migration strategies for refresh projects.
• Working with Cisco UCS Blade Servers.
• P2V and V2V migrations using tools like VMware converter.
• Worked extensively on Templates/Clones/Snapshots & Resource pools.
• Develop and maintain installation and configuration procedures/documentation.
• Configure HBA, Installing HBA drives and other HBA management, Storage allocation, Creating LUN.
• Manage/support Client environment to provide centralized resources.
• Maintain/upgrade Active Directory domain as necessary.
• VMware tools upgrading and Windows patch updates.
• Administer and support Citrix Virtual Infrastructure.
• Experienced with XenApp; XenDesktop
• Worked on Creation & troubleshooting of Virtual Network, VMware ESX & virtual Machines, Created templates from VMs and deployed VMs from templates
• Manage Group Policy Objects (GPO) for server hardening and security ODAA compliance. To include Security policy creation or updates, troubleshooting policies, interpreting policy impact for ISSO (Security Officer).
• Support Backup & Tape Backup library using VERITAS NetBackup, and EMC Avamar. Entails management of backup policies, quarterly backups and tape rotation for such.
• Create test cases and document the cluster response in case of the hardware or nic card failure using windows powershell
• Working with the backup team to ensure system follows unclassified standards to the degree possible.
• Manage/support Symantec Enterprise Protection Antivirus software to function autonomously but similar to the unclassified platform.
• Migrating windows File, Print, Applications, FTP, Web, Terminal servers, SharePoint servers from Win 2003/2008 to window 2008/2012.
• Manage/Migrate/support Print environment using Tools and automation scripts.
• Perform system monitoring, verifying the integrity and availability of all hardware, server resources, and verifying completion of scheduled jobs such as backups.
• Experience with AD administration tools, lockout Policies, and Active Role Server (ARS) for AD object Management.
• Repair and recover from hardware or software failures.
• Patching of servers of multiple sites using Shavlik.
• Upgrade and configure systems software as per operational needs.
• Perform periodic performance reporting to support capacity planning.
• Coordinate with the PMO and customer to provide services requested.
• Experience with Server compliance with security Audits, Vulnerabilities issues, scans, MBSA Scan.
• Experience with EMC storage configuration with power path licenses on server.
• Working on complex projects and doing automation with Powershell and Batch scripting.
• Experienced with Symantec Endpoint Protection.
• Participate in security review of the systems with DSS and customers when deemed necessary.
• Supporting multiple remote site for Server migration and other issues.
• Coordinate with our client’s Infrastructure towers to obtain the necessary assistance for configurations or problems.
• Working on multiple Projects as per business requirement.
• Work Closely with different application Team for planning requirements and Application Requirements.

Confidential, NJ

Sr System Engineer

Responsibilities:

• Experience with Windows 2003/2008, IIS, .Net application integration in large complex environments.
• Experience with Microsoft Windows Clustering technologies.
• Experience with integrating SAN technologies with Microsoft Windows.
• Experience with TCP/IP, DNS, and load balancing technologies.
• Experience with line of business application integration.
• Experience integrating public internet facing applications.
• Experience with Web Server Administrations.
• Working with IIS 7.5 and 7 on Web Servers.
• Troubleshooting application integration issues in Windows environment.
• Experience with CA Software Deployment
• Experience on Deploying Product with CA DSM Tool and troubleshooting issue during deployment.
• Working with VBSCRIPT/WINDOWS scripting host.
• Working with Site Minder.
• Experience with Citrix XenApp, Net scalar.
• Experience with Active Directory, Windows XP, GPOs, IE and similar platform technologies.
• Experience of working with Network Technologies and Virtualization technologies.
• Working with VMware Vsphere 5 and Citrix, HP Quality Centre, Big Fix.
• Implemented Rapid VM deployment preparing templates, cloning and exporting VM to OVF format.
• Worked extensively on Templates/Clones/Snapshots & Resource pools
• P2V and V2V migrations using tools like VMware converter /Plate spin/Double Take.
• Experience of using VMware Consolidated backup and Data Recovery appliances in backing up and restoring VM’s.
• Configured scheduled tasks, alarms and alerts, CPU, Memory and Network Disk monitoring in VCenter.
• Done Patch Management of hosts and VM’s using VMware VCenter Update Manager.
• Experience in installing and configuring storage technology such as SAN, NAS, ISCSI, and RAID.
• Experienced on VMware View (VDI) Implementation.
• Set up V-Motion, High Availability (HA), Distributed Resource System (DRS), and relatedVMwareproducts such as VM Workstation
• Installed the EMC Power Path across all the ESXi Hosts
• Install & troubleshoot patches and updates on ESX hosts and virtual machine using VMwareUpdate manager
• Defining and documenting the hardware, software, infrastructure components, modules, interfaces, scalability, and high availability solutions that meet specified business development requirements.
• Building integrated solutions based on the system design and the standard ML product portfolio, includes identifying dependencies and pre-requisites for the solution and validating non-functional attributes of the system design.
• Infrastructure Integration, bringing together interconnected infrastructure technology elements in the form of a cohesive framework, this framework supports end to end business solutions.
• Experience in conducting different type of Tests in different type of Environment/Platform.
• 3rd Level Support of Incident troubleshooting, analysis and resolution beyond 1st, 2nd level and GWM Operational Stability (SWAT) support tiers.

Confidential, CT

Windows Server Specialist

Responsibilities:

• Administration of WinTel 2000, 2003, 2008 Active Directory, Domain controllers.
• Monitored and analyzed Active Directory architecture activities and working with forest, domain, and trees to ensure maximum performance, efficiency, and availability.
• Monitoring with HP SIM, CIM.
• Monitoring with Tivoli Enterprise Console and resolve that issue.
• Experienced with MOM 2005 monitoring with different types of alerts.
• Experienced with SMS 2003, SCCM 2007. SMS / SCCM administration, Hardware and software technical support analysis, Testing and analysis, Patch Management, Running SMS / SCCM Reports.
• Experienced with Win XP, Windows Vista, Win 7 for supporting as well as application support, and windows based applications.
• Experienced with HP Hardware with HP Proliant DL 360, 380, 385, 585, HP Integrity rx 2620, IBM Netfinity and xSeries servers.
• Interact with HP Hardware team to resolve any Hardware Issue.
• Experienced with File Server and Print server, IIS 6.0 and IIS 7.0
• Experienced on Folder sharing with DFS and Networking Printer Issue and any Kind of Permission Issue.
• Experienced with Security and ID Administration.
• Troubleshoot different kind of Networking Issue with TCP-IP.
• Experienced with Cluster Administration, working with RAID technology.
• Working knowledge and administration in EMC Clariion, and Celerra disk solutions.
• Configure HBA, Installing HBA drives and other HBA management, Storage allocation, Creating LUN.
• Experienced on EMC Networker Back UP and Recovery solution with Tape Library.
• Install, configure and maintain vCenter Server 4.0, ESX server 4.0, vSphere 4 Client and VMware view 4.0.2
• Create and migrate virtual machines host on vCenter and ESX Server
• Create, migrate, and configure virtual desktops with VMware View Management and WYSE.
• Upgrade environment from VI 3.5 to vSphere 4.0.
• Experienced with Administration of VMware 4.1 and Virtual Center.
• Worked on P2V conversions and migrations of physical servers with different OS like Windows and Linux to virtual Platform using VMware converter.
• Implemented Rapid VM deployment preparing templates, cloning and exporting VM to OVF format.
• Worked extensively on Templates/Clones/Snapshots & Resource pools.
• Experienced on VMware VSphere Administration with Bare Metal installation, VM creation (Windows, Linux), Update Manager, Virtual Networking, Storage, VMware VSphere Client, Standalone Converter, Profile management.
• VMware tools upgrading and Windows patch updates
• Worked on VMware Capacity planner and performed capacity analysis of existing physical production environment
• Created and managed resource pools for Virtual Machines
• Experience with multiple backup and recovery technologies like Cloning, Snapshots, and Disaster Recovery technology.
• Monitoring and managing performance of ESX servers and Virtual Machines using Virtual Center server for HA, DRS.
• Experienced with Citrix Presentation Server Administration.
• Successfully migrated Virtual Machines and Virtual machines files using the VMotion and Storage VMotion.
• Handled the VMware solutions to support multiple storage connectivity options such as FC-SAN, iSCSI, NFS (NAS) and internal storage.
• Worked on Creation & troubleshooting of Virtual Network, VMware ESX & virtual Machines
• Created templates from VMs and deployed VMs from templates
• Performed backup and restore of VMware host server configuration, Virtual Machine backup, snapshot, P2V-V2V conversation with VMware converter and with other third party
• Experienced with Dame Ware and Remote Desktop Access for solving end user problem.
• Experienced with Remedy system for whole infrastructure.
• Working with DR site.
• Experienced with Incident, Change, Problem Management System and RFC.
• Experienced with Peregrine Problem Ticketing System.

Confidential, CT

Windows System/VMware/Network Admin/Messaging Engineer

Responsibilities:

• Administration of WinTel 2003,2008 Active Directory, Domain controllers, Exchange 2003,2007,2010.
• Experienced with some Architecture solution and also analysis for the remediation of Exchange Environment with 2007.
• Experienced with DCPROMO process and configuring AD Site, OU structure, Site Link, DNS, DHCP, WINS,ISA, IIS 6.0, Global Catalog server, directory services, subnet mask, DNS forwarders, Reverse Lookup, Scavenge Stale resource records.
• Working on Active Directory administration, accountability, security groups, distribution groups, replication, GPOsand FSMO roles, Clustering configuration and administration, and Experienced with RAID technology.
• Experienced with VMware Esx sever 3.5, P2V with Platespin Migrate, and Creating Virtual Windows, Linux Servers.
• Vsphere, Citrix Administration on Physical and Virtual Platform.
• Implement VMware view and ThinApp for end users.
• P2V and V2V migrations using tools like VMware converter.
• Worked extensively on Templates/Clones/Snapshots & Resource pools.
• Develop and maintain installation and configuration procedures/documentation.
• Configure HBA, Installing HBA drives and other HBA management, Storage allocation, Creating LUN.
• Installation and configuration of vSphere components like ESX/ESXi server, vCenter Server and vSphere client
• Creating and configuring 3par SAN, Dell EqualogiciSCSI and NFS datastores for ESX servers, Configure networking for ESX servers, Configuring and managing Resource pools using shares.
• Configuring VMotion for migrating VMs, HA for cluster environment and DRS for load balancing guests between multiple ESX hosts.
• User administration and access policy implementation for the VMware operations group. Capacity planning and performance monitoring of virtual Machines and architecting VM implementation as per different application perspective.
• Deployment of Virtual machines from templates and P2V migration using vConverter and Platespin PowerConvert,Troubleshoot common virtual environment problems.
• Preparing documentation for the virtual environment.
• Performed the Disk, shelf, RLM, SP, BMC, and BIOS firmware upgrades as per the NetApp Auto support.
• Configuration and Troubleshooting issues in NetApp and CX storage.
• Extensively worked on the Snap mirror technology and created the connection entries to use the specific interface based on the network traffic go perform the migrations.
• Installation and Configuration vCenter HeartBeat for vCenter failover and FailBack Purpose.
• Supported,Citrix, XenDesktop, and VDI environment. Troubleshoot and support Citrixenvironment.
• Set up V-Motion, High Availability (HA), Distributed Resource System (DRS), and relatedVMwareproducts such as VM Workstation.
• Implemented disaster recovery utilizing Veeam Backup and VDR.
• Citrix Presentation Server Administration.
• Working on SQL SERVER 2005, Exchange 2003, 2007, 2010 environment, using power shell, server migration, configuring connectors, MBStore mount, Service configuration, Antivirus, Load balancing and Clustering, Fire walling, spam Filtering.
• Experienced on Exchange server 2010 Log backup and maintenance, and mailbox administration, admin groups, routing groups, backup and restore, public folder administration, Exchange clusters, bulk mailbox migrations, MTA, Mail Queues, front end and back end exchanger servers, Snap Manager, DMZ, SMTP routing issues, Microsoft Clustering.
• Designing and Administration of Mail Filtering and Anti Spamming Tool in Exchange by GFI Tools.
• Outlook 2003,2007- PST, OST, RPC over HTTPS, OWA, Lotus Notes
• Familiar with windows, software and Hardware based Firewalls. Allow/Block ports, inbound/outbound tcp/udp traffic, PAT/NAT, Remote Access VPN and site to site vpn, content filtering, log alayzing, reporting, configurations of Syslog, snmp, access control.
• System Management Software - SMS 2003, Experienced on SCCM 2007 for server Management, Change Management, Patch Management, Running SMS / SCCM Reports
• Experienced on Windows MSI Packaging using Wise Package Studio, worked with Win XP and Win 7.
• Experienced on root cause analysis, fail over solution, redundancy service levels, system monitoring and performance tuning.

Confidential, NY

System Administrator

Responsibilities:

• Administration of WinTel 2003 Active Directory domain controllers, Exchange 2003,2007 servers
• Monitoring users and manage security and using Group policies on Wintel Server 2003.
• Working on Active Directory administration, accountability, security groups, distribution groups, replication, GPOsand FSMO roles, configuration and administration
• Working on SQL SERVER, Exchange 2003 environment, server migration, configuring connectors, Service configuration, Antivirus, Load balancing and Clustering, Fire walling, spam Filtering, backup and System Management Software - SMS
• E-mail archiving and security using GFI Tools.
• Designing and Administration of Mail Filtering and Anti Spamming Tool in Exchange by GFI Tools
• Experienced on automation of Windows administration tasks and patching, security auditing, Exchange / SMTP tasks.
• Day to day problem analysis and solving on Windows 2003, Exchange 2003.
• Experienced with desktop supporting with WIN XP and support applications and troubleshoot issue on Windows Operating system.
• Experienced on VMware Templates/Clones/Snapshots.
• Develop and maintain installation and configuration procedures/documentation.
• Performing Daily health checks on enterprise Domain Controllers, Exchange servers,
• Experienced with Disaster Recovery.
• Maintaining mission critical servers without downtime and handling CritSit calls
• On-call support escalated issues after hours
• Experienced with Net Backup.
• Creation of Changes Management for distributing Hot fixes, patches and server reboots
• Hot fixes and patch distributing thro Update Expert

Confidential

Windows System Admin

Responsibilities:

• Administration of WinTel 2003, Active Directory, Domain controllers, Exchange 2003.
• Monitoring users and manage security and using Group policies on Wintel Server.
• Monitored and analysed Active Directory architecture activities and working with forest, domain, and trees to ensure maximum performance, efficiency, and availability.
• Deployed Exchange servers, File Servers, DNS, DHCP, WINS and IIS 6.0, ISA servers in windows 2000, 2003 environment. Provided Backup and restore solutions to the customers.
• Installation and configuration of Windows Network.
• Developed Client-Server architecture.
• Worked on SQL SERVER 2005, Exchange 2003 environment, server migration, configuring connectors, MBStore mount, Service configuration, Antivirus, Load balancing and Clustering, Fire walling, spam Filtering, backup and System Management Software - SMS 2003, Supporting Win XP and windows applications.
• Desktop Support for all windows XP boxes.
• Log backup and maintenance, and mailbox administration, admin groups, routing groups, backup and restore, public folder administration, Exchange 2003 clusters, bulk mailbox migrations, MTA, Mail Queues, front end and back end exchanger servers, Snap Manager, DMZ, SMTP routing issues, Microsoft Clustering.
• Designing and Administration of Mail Filtering and Anti Spamming Tool in Exchange by GFI Tools.
• Backup of Exchange Servers by Arc serve 11.1 and VERITAS Net Backup and Exmerge by Automated way.
• Outlook 2003- PST, OST, RPC over HTTPS, OWA.
• Administering Symantec Bright mail Anti-Spam, Spam, including phishing, spoofing, and sheer volume attacks, Viruses, Denial of Service attacks, Intrusions and Web mail Attacks, black list and white list of mail accounts, SMTP relays, Network Appliance.
• Provided security audits, vulnerability assessments, Microsoft 2000/2003 Active Directory server upgrades and Administration
• Troubleshooting Server crashes, hangs and unexpected reboots by analysing the memory dumps with the help of debugging tools.