SUMMARY

• I am an IT professional with 19 years of experience managing infrastructure systems, skilled in backup, enterprise storage, VMware vSphere, and Windows Servers.
• During my service at Confidential - Government Services Division working with the back-office support team, my contribution to the overall success of a contract program exceeded $1.5B in revenue. Additionally, I am knowledgeable in high levels of security in US Government contracts and HIPAA compliant rules and regulations of Health Information Privacy.

TECHNICAL SKILLS

• VMWare vSphere ESXi 5.5, 6.5 and 6.7, vCenter Server, vRealize Operations
• Exchange 2010, 2016, Online Exchange
• Active Directory, GPO, DHCP, DNS, SCCM, Symantec Altiris
• Windows Server, 2008, 2012, 2016, 2019
• Linux Server
• WhatsUp Gold, Dell OME, Splunk
• Citrix NetScaler, Storefront, Delivery Controller, XenApp & XenDesktop, Terminal Server
• Veeam Backup, Symantec Backup Exec
• MS Office 2010, 2013, 2016, Office 365
• TCP/IP, SMTP, HTTP
• Cisco AnyConnect, Sophos, Trend Micro OfficeScan, Symantec Endpoint
• NetApp AFF and FS Series
• Hitachi Unified Storage HUS130
• Dell Compellent, Dell EMC Data Domain
• Dell EqualLogic PS series
• Dell PowerVault and Tape Library
• Synology storage RS and DS series
• Cisco Fabric Switch 9148s
• Brocade Fabric Switch 6505
• HP ProLiant series
• Dell PowerEdge series
• Dell Precision Workstation

PROFESSIONAL EXPERIENCE

Sr. System Administrator

Confidential

Responsibilities:

• Successfully configured and deployed WhatsUp Gold 19.2 to monitoring the critical infrastructure of VMware ESXi hosts, Storage, Fabric Switches, and servers; keeping the system up and running 99.999% of the time. Configured WhatsUp Gold up/down availability to send alerts for 2 minutes down and 5 minutes page for ping monitor, SQL server monitor, application monitor, and disk utilization monitor.
• Plans quarterly patches update for VMware vSphere infrastructure of 110 ESXi hosts and monthly patches update for Windows and Linux servers. The strategy is to begin rolling out patches from low risk systems to critical production systems to prevent any unexpected events after the updates for the critical production systems. The team works to achieve 100% monthly patching updates that include security and critical updates for Windows server infrastructure, by dividing servers into patch groups and assigning them among team members.
• To ensure solid design and solutions to maintain secure and highly available systems, as part of the support group I work with the network team to monitor systems up/down during the outage and Network updates/changes; work with application team to assist with software install, testing and support; and work with security team to migrate endpoint protection from Sophos to Symantec.
• Work with business units on new development to roll out Genesys servers, and improvements to existing infrastructure, deployed WhatsUp Gold 19.2 and SCCM.
• Assist team in developing and improving the infrastructure automation, developed VMware PowerCLI health check script automation to check for snapshots are enabled and forgot to remove, to detect different VMware tool versions, and VMware tools time sync options that are not enabled.
• Developed and deployed GPO to update SNMP trap and security settings to 1900+ physical and virtual servers in cross-domain; managing Active Directory cross-domain environments, modified current PowerShell script to cleanup inactive computer in AD after 30 days, 60 days and 90 days.
• Create PTC changes to coordinate updates, outages, and other potential service activities to prevent disruption of critical systems. Email application owner/group for maintenance windows.
• Use Open Manage Enterprise, SCCM and Altiris to perform automation tasks to push software installation, patch installments, firmware updates, schedule server reboots, and system configuration to servers and end-user workstations.
• Manage daily and weekly Commvault backup servers to comply with company policy of daily incremental, weekly full and daily retention for 60 days, perform console updates when needed. Review daily backup jobs summary to ensure 100% complete, troubleshooting jobs failure by study the logs and restart the jobs as needed. Create new backup job for new server build to meet company policy.
• Developed daily reports in WhatsUp Gold and Splunk to identify and rectify problems that needs to be addressed and improved, escalate to appropriate team as required. Configured Splunk to detect Windows Blue Screen alerts.
• Help establish, implement, and adhere to the corporate technology standards and guidelines
• Perform on-call duties, system implementations and upgrades during and after business hours

System Engineer

Confidential

Responsibilities:

• Worked on the project to develop the architecture to migrate On-premises DR site to Cloud
• Built a portfolio to select the best options between AWS and Azure
• Successfully completed the failover from primary datacenter to DR site, reduced the total time from 24 hours to 20 hours, compared to previous years of failover tasks. Beginning with the review of failover documents, made changes, and coordinated with the Network and application teams for the failover date a month in advance. Failover tasks divided into four phases, 1st phase began with bringing up the physical domain controller, vCenter server, and ESXi hosts; 2nd phase began with critical SQL and application servers; 3rd phase began with web server and other application servers; and last phase was to bring the remaining of low critical servers to live.
• Support daily operations including VMware vSphere, Dell EMC Data Domain, Avamar, Nutanix, Office 365, Active Directory, monthly server patches update and KACE

System Administrator

Confidential

Responsibilities:

• Successfully designed and deployed new ESXi hosts with fully redundant of Fiber Channel, vMotion, and Virtual Machine Network, capability to computer vMotion a VM under 10 seconds, and storage vMotion for a 100 GB VM under 20 minutes
• Successfully designed and deployed Cisco MDS 9148S as part of the new VMware ESXi deployment for primary datacenter and deployed Brocade 6510 Switches to secondary datacenter. Configuration including creation of device-alias database, zoning, and add members to zones.
• Successfully deployed NetApp AFF A200 & FAS2650 with Disaster Recovery, secondary backups to Tandberg Data RDX QuickStation for offsite, storage savings and efficiency 2:23:1
• Successfully migrated VMs from existing ESXi hosts and SAN to new infrastructure under 1500 hours
• Successfully re-organized the Hitachi Unified Storage to free up over 50% usable storage space and save the company over $200,000 of buying a replacement SAN
• Designed and deployed the Veeam Backup solution that provides data protection and disaster recovery for over 120 VMs. Successfully completed failover to DR site once per year; completed backup validation every 6 months as 2nd options for disaster recovery.
• Accomplished research and negotiated new ESXi hosts and SANs replacement for 2018 budget, saving the company over $300,000
• Developed Dynamic Resource Pool Calculator to calculate current resource usage of VMware vSphere datacenter, preparation for hardware refresh spec to purchase new ESXi hosts.
• Developed VMware PowerCLI script automation to health check snapshots and detect different VMware tool versions.
• Solved the VMware vMotion issues by adjusting the MTU settings to 9000 between ESXi, SAN Fabric switches, adjusting MTU settings to 1500 between VM kernel and Network switches.
• Scheduled maintenance for VMware vSphere infrastructure twice a year based on company policies
• Support 200+ servers in AWS clouds and data centers for all Confidential locations including Windows and Linux Servers, VMware vSphere 6.5, NetApp, Hitachi SAN, Veeam Backups, RDS, Terminal Servers, Citrix, Active Directory, Print Servers, DHCP, and DNS
• Successfully designed and deployed Citrix XenApp 7.16 to support oversea users. Configured Citrix farm including NetScaler, 2 StoreFront servers, 3 Delivery Controller servers, and 8 XenApp servers. Configured SSL certificates to secure connection between NetScaler, StoreFront, and Delivery Controller. Obtained public wildcard certificate to install on NetScaler for external oversea users to be able to authenticate to Citrix via web browser and Citrix receiver.
• Designed and deployed Group Policies to create a local admin group to the domain of 260 users’ laptops and desktops
• Manage daily and weekly backup jobs for VMs via Veeam Backup & Replication, and physical servers via Backup Exec. Review daily report from Veeam and Backup Exec, set a daily schedule to send disk and tape to Iron Mountain for offsite storage.
• Provide application support for all Confidential locations including NextGen, AllScript, RightFax
• Configured the infrastructure system monitors to detect the source of potential issues and current problems for NetApp, Hitachi Unified Storage and VMware ESXi hosts.
• Perform monthly Windows and Linux server patching, and kept the system up to date to fulfill with HIPAA compliant rules and regulations of Health Information Privacy

System Administrator

Confidential

Responsibilities:

• Successfully upgraded VMware vSphere from 5.5 to 6.5, configured new ESXi hosts including MTU settings, Traffic Shaping, and NIC teaming. Configured storage including LUN and datastore settings. Convert physical servers to virtual servers.
• Successful mailbox migration from On-premises to Office 365, Windows server in-place upgrade to Server 2012 R2.
• Configured the SolarWinds to monitor Network equipment, ESXi hosts, SAN members, Windows, and Linux Servers.
• Successfully troubleshooted various latency issues, bottlenecks, and performance problems of ESXi, SAN, and Veeam Backup by increasing the amount of backup proxy servers, scheduling jobs at night and limiting it to 3 jobs at the time to reduce number of job queues writing to the backup repository.
• Managed VMware ESXi 6.5 infrastructure (Dell Power Edge R730) of 2 clusters including 8 ESXi hosts and over 100 VMs. Kept the VMware ESXi up to date with latest patches. Planned practical patch management to prevent unplanned downtime by patching 25% cluster’s resources (about 2 out of 8 hosts) per schedule, this allows normal functioning of VMs on the remaining ESXi hosts.
• Managed Dell EqualLogic SAN & NAS, including monitor, performance troubleshooting, data storage migration, and firmware updates.
• Citrix administration: manage Citrix XenServer, XenDesktop, and XenApp. Configured XenApp load balance servers for better performance.
• Exchange administration: manage Exchange On-premises and Exchange Online (Office 365 hybrid).
• Windows Server administration: maintain Active Directory, Group Policies, DNS, and DHCP.
• Scripting: developed script to find snapshots and send email to Sysadmin team weekly, developed various PowerShell scripts to manage Active Directory, developed a PowerShell script to allow Help Desk to place “out of office” auto reply on behalf of Office 365 users.
• Perform monthly server patch management using SCCM for desktops and servers.
• Antivirus administration: monitoring the console to ensure devices are checked in and security is up to date for servers and desktops.
• Backup and recovery: schedule and verify daily and monthly backups using Veeam Backup & Replication. Test data restoration every 6 months.
• Research, evaluate, and make recommendations of new technologies, products, services to VP of IT. Recommended to VP of IT to purchase additional two ESXi hosts to keep cluster’s resources to under 75% utilization. Recommended to VP of IT to deploy SCCM over the current WSUS.
• Follow standard compliance rules to record and track changes and problem activities.