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System Administrator Resume

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TECHNICAL SKILLS

Scripting Language: MS PowerShell, Exchange Management Shell (EMS), PowerCli, vCli and ESXCli.

Virtualization: VMware 3.0, 4.x, 5.x and 6.0, VSAN, vRealize, and NSXv, EVO Rail

Network Devices: Cisco’s Nexus 5500, 7000, 2000 FEX

Servers: HP ProLiant’s, and Dell PowerEdge

MS Exchange: 2003/2007/2010/2013.

Operating Systems: Windows Server 2003/2008/2008 R2/2012/2012R2 and CentOS.

Desktops: Windows XP, 7 and 8.0 and 8.1

Backup /DR.: CommVault QiNetix, Veeam, EMC’s RecoverPoint 3.x/4.0.

Storage: EMC’s CX4 - 120 and VNX 5300/5500, Extreme I/O series and IBM’s System Storage N series Data OnTap 8.x 7

Routing Protocols: RIP, OSPF, BGP, EIGRP

Cloud: Windows Azure and AWS with PowerShell.

PROFESSIONAL EXPERIENCE

Confidential

System Administrator

Responsibilities:

  • Migrated/upgraded Symantec’s Enterprise Evault and eDiscovery applications from a 32 bit OS (version 9.0.1 software running on Windows 2003 R2 server) to a 64 bit OS (version 10.4 running on Windows server 2008 R2).
  • Deployed hardware version 10 VMs for Citrix version 7.6 servers, Evault and eDiscovery for the migration/update of Evault and eDiscovery from version 9.0.1 to eVault version10.4.
  • Created VMware 5.5 templates, for servers running Windows server 2008, 2008 r2 and server 2012 and 2012 R2 OSs.
  • Zoned all existing standalone ESXi 5.5 host to EMC’s DS-300b SAN switches, created storage pools, LUNs and configured storage groups (LUN masked) the LUNs and the hosts on the EMC’s VNX 5500 storage array, presented these LUNs to the various VMware hosts, and created vSphere datastores.
  • Deployed and configured a vMA 5.0 appliance into the existing VMware infrastructure, and configured this appliance to gather disk performance statistics from the VMware hosts using resxtop.
  • Configured and installed HP DL 380 G8 and G9 servers as ESXi 5.5 hosts. Worked with HP to update firmwares and drivers.
  • Deployed hardware versions 10 VMs (via the Web Client) for MSOW (the credentialing software) and configure a VM network specifically for this project. Also created VMs for Citrix version 7.6, Exchange 2013 and other projects.
  • Created Active Directory and Exchange 2010 user’s accounts.
  • Project manager for the upgrade of Exchange 2010 to Exchange 2013. Built all four VMs for both front end and MB servers.
  • Managed and configured clients and groups for filesystem backups and applications such as Exchange and SQL using Networker Module for Microsoft Application (NMM). Performed restores using the Networker User’s interface.
  • Troubleshoot Exchange 2010, Active Directory, Group Policies and Evault issues.
  • Worked constantly with the Medical Center’s various vendors, troubleshooting physical servers and software issues.

Confidential

Senior System Engineer

Responsibilities:

  • I was the lead architect for the project that extended the Active Directory infrastructure of a newly acquired client into the Confidential Age Data Center for management.
  • Installed and configured four IBM System x3650 M4 servers as vSphere 5.1 hosts. Completed the initial configurations such as adding two specific NICs as VMkernel portgroup for the Management interface via DCUI.
  • Then updated two of the hosts to vSphere ESXi version 5.5.
  • Cabled all twelve NICs on each of the ESXi hosts to the Cisco’s 6500 switch.
  • Cabled the two HBAs in each of the four hosts to the pair of Qlogic SAN fabric switches.
  • Configure aggregates and LUNs on the IBM System Storage N6060 (50 TB aggregate) Data OnTAP 8.2 7 mode and presented them to the hosts.
  • Created datastores from these LUNs.
  • Integrated the two new servers into the existing Production vSphere environment.
  • Configured hosts settings such as time and NTP, DNS and Routing, host’s name once these hosts were properly integrated.
  • Added the two new hosts to the production dvSwitch and the iSCSI dvSwitch used for backup.
  • Created Virtual Machine report from the existing production environment, using PowerCli.
  • Configured multiple vMotion portgroups to take of advantage of multiple-NIC vMotion in vSphere 5.x, the multiple nics were configured in an active/standby configuration for Load Balancing and Redundancy.
  • Virtualized the following Microsoft tier one applications, Active Directory and Exchange.
  • Extended the new client’s Active Directory infrastructure into Confidential Age Manage Services Data Center, by configuring two AD Domain Controllers into the Confidential Age’s production vSphere environment.
  • Moved the five FSMO roles from the client’s original datacenter to Confidential Age’s datacenter.
  • Planned the design of the Exchange 2010 DAG, using Microsoft Exchange 2010 Deployment Assistant.
  • Extended the new client’s Exchange 2010 SP1 organization to Confidential Age‘s datacenter. Configured a two nodes DAG.
  • Moved all the clients existing recipient’s mailboxes to three new Exchange databases that I configured.
  • Completed the extension of the Exchange’s organization by creating copies of the three databases on the second Mailbox server, and then tested *-over by doing a switch over to the new Mailbox server.
  • Created a new VDI infrastructure with VMware Horizon View 6.0.
  • Configured the vSphere 5.1 infrastructure to support the VDI project. Configuration included creating the vCenter (using the simple install), creation of a datacenter and finally added the ESXi host to the datacenter so that it can be managed by vCenter.
  • Configured a standard switch for the host’s VM traffic and the host settings such as DNS and routing, time and NTP, VM startup and shutdown order, and Host name.
  • Created and OU for the VDI and then then configured Persona Management and Location Based Printing for the VDI project.
  • Created a POC for one of the company’s client. Clients access the VDI desktops via Horizon View HTML Blast.
  • Perform continued maintenance on the Production vSphere, upgrading the two dvSwitches to 5.1 and reconfiguring the dvSwitches Teaming policy, and creating and customizing clones and templates.
  • Renewed SAN certificates for Confidential Age’s managed clients, using DigiCert’s utility.

Confidential

Messaging Consultant

Responsibilities:

  • Responsibilities include the management of the Exchange 2003/2007/2010 environment in an extensive multi-domain forest.
  • Main responsibility was for the Medplus Exchange 2010 environment of ten databases in a two node DAG Exchange servers providing database maintenance, resolved trouble tickets, provide mailbox administration (such as mailbox storage quotas, message delivery restrictions, and mail forwarding just to name a few), configured mailbox permissions (such as Send AS permissions, Send AS Another User and Send On Behalf AS) and Exporting and Importing mailboxes.
  • Configured permissions that grants administrators, the rights to do single item recovery using the Exchange Control Panel (ECP)
  • Maintained and configured the two nodes clustered Tumbleweed 4700 appliance.
  • Responsibilities also included, maintaining the Active Directory infrastructure.

Confidential

Senior Network Administrator

Responsibilities:

  • Responsible for the Exchange messaging infrastructure that includes, the Windows Exchange 2007 Virtual Machines. The infrastructure includes 1 Exchange 2007 Mailbox server and the clustered 2007 Client/Hub transport servers. All servers/hosts are running ESXi 5.1 hypervisor (updated from ESX 4.0). These Virtual Machines running Windows server 2008 guess OS, within the three-node vSphere ESXi 5.1 cluster, licensed for Enterprise Plus, thus HA and DRS are configured. Shared storage is EMC’s VNX 5300 SAN.
  • The clustered CAS servers using Windows NLB.
  • Configured the only Public Folder in the environment, used to access an InfoPath form I designed and publish.
  • Wrote and implemented EMS scripts to collect database and mailbox statistics and mail flow.
  • Configured Exchange ActiveSync policies and then applied these policies to both the executives and the mobile sales units.
  • Move logs file using the Database Recovery Management sections of the Exchange Toolsbox, after the Transaction log drive for the executive database ran out of space because the nightly full backup failed.
  • Did off-line defragmentation on the four databases.
  • Test remote connectivity using the link www.testexchangeconnectivity.com.
  • Configured EMC’s RecoverPoint/SE Local and Remote Replication and Exchange consistency groups, allowing for Disaster Recovery and Near-Line backups.
  • Configured backup policies for the Exchange 2007 four databases and log files on the Symantec Backup Exec application.
  • Performed mailbox restore using Symantec Backup Exec and Exchange 2007 restore storage group.
  • Renewed and applied the SAN certificate for Exchange.
  • Supported the PKI infrastructure.
  • Installed and configured Exchange Anti-Spam agents using the ant spam agents PS script.
  • The messaging environment also includes the Symantec BrightMail appliance email gateway, the EMC Sourceone servers, for archiving and Shortcutting of emails and Blackberry Enterprise (BES) version 5.0 servers. All servers are virtual machines.
  • Worked with outside consultants designing planning for the coexistence and then the final migration from Exchange 2007 to Exchange 2010.
  • Saved the company thousands of dollars by taking on the upgrade of EMC’s Sourceone application to version 6.8 SP1 to resolve the problem users were experiencing using IE 9.0 to search for archived emails.
  • Reconfigured the EMC’s Sourceone default Inbox folder for locating retrieved Shortcutted emails, to a more recognizable folder in the Outlook folder structure
  • Worked with the vendor that was responsible for designing the new SAN and vSphere environment. My main responsibility was collecting performance data from the CX4 - 120 EMC SAN storage SP collects, using Unisphere and performance data for the CPU, memory and I/O from the four nodes in the vSphere ESX 4.0 cluster.
  • Configured ether channel between the LAN switch and vSphere 4.x/5.1 ESXi hosts.
  • Monitor and trouble the vSphere 5.1 storage performance, using utilities such as esxtop, host’s log files, esxcli storage commands, and svmotion.
  • Monitored statistics for disk, memory, and I/O usage, using vCenter Performance charts, and esxtop.
  • Monitor and troubleshoot vSphere networking using esxcli networking and vicfg to troubleshoot nics, vmknics, route, and DNS.
  • Configured Storage Groups (LUN masking used to present host to LUNs), Storage Pools, RAID Groups, LUNs, FAST- Cache, and FAST- VP on the VNX 5300, using Unisphere, and EMC’s VSI plugin for vSphere.
  • Worked extensively with EMC’s technical support, troubleshooting and reconfiguring the RPA’s data flow between the Bronx site and the DR site. Worked with the techs reconfiguring the zoning so that they are the same on both sites. Also worked troubleshooting the CX4 SP issues and updating the SP’s flare.
  • Monitor Datastore store (Free space and Capacity) and Network for virtual machines that I was responsible for, using PowerCli and vCenter.
  • Redesigned the AD site infrastructure, added a second site.
  • Maintained and troubleshoot the AD infrastructure using tools such as log files, DCdiag (for DC diagnostics), Repadmin (to maintain replication), DNScmd, and NLtest, just to name a few utilities.
  • Completed a successful audit of the company's Active Directory database (Ntds.dit). Accomplish this, using a PowerShell script that I modified to use in Manhattan Beer’s environment. The audit script search the AD database by domain by users, retrieving the last logon time stamp, using Powershell and the .NET frame work for AD.
  • Configured FSRM to monitor file space on the File Server.
  • Reconfigured the company’s WSUS infrastructure. Implemented GPOs that reassigned servers and clients from the unassigned WSUS group to groups that match the company’s Active Directory OU layout. This alignment allows WSUS updates by group.
  • Installed and configured Dell IT Assistant, the Dell utility used for the management of all Dell servers in the network, from one single server.
  • Configure virtual machine backups using Veeam.
  • Designed a new VLAN and DHCP infrastructure for the Company’s new location in the Bronx.

Confidential

Network Administrator

Responsibilities:

  • Build standalone physical servers, physical clustered servers, and VMware VI3.x cluster across box for Exchange 2003 and SQL 2000.
  • Maintained and troubleshoot the ten Exchange 2003 distributed clusters, which also include VMware VI3.x clusters across box technology.
  • Troubleshoot and configured Exchange recipient and System policies.
  • Troubleshoot internal and external mail flow, using tools and utilities such as Exchange Tracking and diagnostic logging, SMTP verbs, MS Performance Monitor and Tumbleweed Email Firewall queues, Event logs and MessageLabs portal.
  • Management of DoubleTake replication software for Exchange Information store replication to the DR site.
  • Manage the messaging perimeter security infrastructure of Postini/MessageLabs and Tumbleweed E-mail firewall and configured Tumbleweed EMF policies.
  • Maintain and troubleshoot problems with the Seven RIM BlackBerry Enterprise 4.x servers.
  • Rebuild the BoxTone VM machine and configured the BoxTone application to monitor the BES servers.
  • Performed daily maintenance of the Active Directory infrastructure, adding users to AD, and creating Exchange accounts, terminating users in AD and Exchange and perform Exchange mailbox moves.
  • Configured and troubleshoot Group Policy Objects (GPOs). Configured GPO modeling to see the effective policy applied to users.
  • Troubleshoot and resolved issues with Active Directory replication.
  • Configured DNS forward lookup zones, DNS forwarding and conditional forwarding, troubleshoot, and resolved basic DNS connectivity test failures.
  • Configured new DHCP IP scopes.
  • Patched the more than thirty plus ESX 3.0.2 server's hosts using the VMTSPatchManager, VMotion ESX VM machines within clusters to allow for patch management.
  • Build ESX 3.0.2 VM machines for Windows server 2003 Standard and Enterprise edition.
  • Monitored the physical servers with HP's ISEE, the SAN using HP's ISEE/WEBES.
  • Upgraded WhatsUp Premium to ver. 12.0.
  • Resolved IP addressing issues, such as duplicate IP conflicts on the network.
  • Configured new access switches (Cisco's 4006 with a mixture of Supervisor Engine 2 and Supervisor Engine 3) with VLANs and PVLANs, STP tuning parameters (such as Portfast, UDLD, LoopGuard, and BPDU Guard) and integrated them into the company's LAN infrastructure.
  • Managed the backup infrastructure of Quantum i2000 tape library and CommVault QiNetix on nightly basis, overseeing tape rotation and that the proper scratch tapes are loaded, resolved issues with failed backups, failed libraries and tape drives. Also completing restores on request.

Confidential

Network/UNIX Administrator

Responsibilities:

  • Third level support for the company’s LAN infrastructure of one Cisco 6513 distribution switch, with two Cisco's Supervisor Engines 3, configured in a redundant configuration, and with approximately Twenty-six Cisco 4006 access switches.
  • Troubleshoot routing issues with OSPF.
  • Configured CatOS on access switches and integrated then into the LAN infrastructure.

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