Sagar Halande

• Responsible for the health and upkeep of our critical IT infrastructure, keeping our systems at a 99% uptime rate to support seamless corporate and guest operations. • Shape the technical roadmap, design, and continuous improvement for our virtualization, virtual desktop (VDI), and core SAN storage environments. • Set and maintain practical operational standards across all infrastructure layers, making sure we line up with industry frameworks and company compliance policies. • Act as the final technical authority for the team, handling Tier 3 escalations for our virtualization platforms and Tier 2 oversight for core storage systems. • Serve as the lead technical advisor on high-stakes projects, mapping out the architectural strategy for major infrastructure migrations and data center moves. • Dive deep into troubleshooting and root-cause analysis when critical host or storage issues pop up, working directly with vendor engineering teams to get things fixed quickly. • Oversee capacity planning, day-to-day provisioning, and proactive health checks across all our blade chassis and enterprise rack servers. • Work closely with the Information Security team to spot infrastructure risks early, manage patch rollouts, and keep our systems secure. • Handle regular firmware updates, critical hotfixes, and SAN optimizations to keep the whole environment running smoothly and reliably. • Led the design, testing, and rollout of our desktop virtualization platform, which modernized how our end-users work and significantly improved their mobility. • Build and maintain clear architectural blueprints, runbooks, and SOPs so that our cross-functional teams have the knowledge they need to succeed.

• Functioned as a key engineer across both the dedicated Project Implementation and Steady-State Operations teams. Responsible for the end-to-end lifecycle management—including architectural design, deployment, administration, and advanced tier-support—of enterprise VMware environment. • Managed and optimized large-scale virtual environments across VMware vSphere, ensuring maximum uptime through the strategic configuration and fine-tuning of DRS and HA clusters. • Owned the routine cycle of analysing, testing, and deploying critical hotfixes, security patches, and OS updates across the Windows server estate to mitigate security risks, eliminate vulnerabilities, and maintain compliance. • Spearheaded the installation, configuration, and deep-dive troubleshooting of Windows Server environments (spanning legacy 2008/2012 up to modern 2016/2019/2022 releases) in strict alignment with corporate engineering standards and compliance baselines. • Monitored and analysed compute and memory utilization within clusters, proactively rebalancing workloads and adjusting resource allocations to prevent performance bottlenecks and ensure optimal application response times.

• Built out VMware environments from scratch, handling everything from the initial ESXi host builds and vCenter setups to configuring core cluster features like HA for failover and DRS for resource balancing. • Managed the day-to-day VEEAM backup infrastructure. This included tracking daily backup jobs, verifying replication, troubleshooting failed restores, and running regular disaster recovery drills to make sure data was actually recoverable. • Oversaw daily VM operations including cloning and workload migrations via vMotion and Storage vMotion. Maintained strict control over snapshot lifecycles to protect datastore capacity and prevent performance hits. • Planned and handled routine ESXi host patching, hardware firmware updates, and full vSphere upgrades. Coordinated all work through formal Change Management channels to respect client SLAs and minimize user impact. • Reviewed and acted on vulnerability audit reports to secure the virtual environment. Remediated risks by applying security patches, deprecating insecure protocols, and hardening host/vCenter configurations against baseline standards. Served as the senior technical point for virtualization issues, diving into complex host or VM crashes to restore service and documenting Root Cause Analysis (RCA)

• Oversees daily operations by monitoring incoming contact volumes identifying trends and utilizing skills accordingly, to ensure that maintain service level agreement (SLA). • Creating virtual machines with the help of templates or cloning as per client’s request. • Deploying guest OS on new VM’s as per requirement. • Troubleshooting Virtual Machine issues like CPU/Memory load, Network latency, snapshot consolidate, Datastore latency. • Add/Remove Esxi Host/VM from DRS/HA cluster. • Working on upgrade of Esxi Host through Update Manager. • Installation several hotfixes and patches to dedicated Esxi host to eliminate vulnerabilities. • Performing VMotion of desired VM’s as per requirement. • Troubleshooting technical issues and escalating complex problems to appropriate support team for resolution. • Plan and execute allocated work within deadlines also maintain records of daily tasks.

• Receiving the calls through E-mail / phone call. • Worked on Branded Dell, IBM and HP & Sony Viao Laptops & Desktops. • Handling Calls Remotely in house & sub locations of Accelya Kale premises. • Installation of MS Office, Operating Systems: Windows XP, Win 2007, Win 8 & win 8.1. • Creating user’s window & exchange ID in active directory. • Troubleshooting on user’s account & computer’s account. • Configure and troubleshoot Wireless on user’s laptop. • Troubleshooting of Desktop PC, hardware and operating system and application issues. • Setup policies on the Desktops and ensure they are within the Accelya Kale’s Domain. • Update the operating system for the latest patches and updates issued by Microsoft.

• Receiving the calls through E-mail / phone call. • Open a ticket in HP service manager and share the ticket no. with the customer. • Taking remote of user’s system & do the first level of troubleshooting. • Installing software’s & troubleshooting steps. • Installation of MS Office 2003, 2007, 2010, 2013 on desktop & laptop. • Configuring cloud exchange mail on users system & handheld device. • Also installing MS Office related patches & providing 1st level support. • Also taking follow up on existing pending tickets.