"We've centralized much of our individual server storage onto EMC storage area networks (SANs), so we can easily expand with more disk space as we need it," continued Day. "Our retrieval times for critical medical information are faster, which facilitates clinicians making more responsive and educated decisions. Our infrastructure is easier to manage and protect because we can view all of our SANs from a single screen as opposed to jumping from server to server. We use EMC software to automate a range of storage administration, replication and backup and recovery functions, helping DCHS to become more efficient. Even though our storage has increased from 45 to 150 terabytes in just two years, we still have the equivalent of one full-time employee managing it all."
To further consolidate and protect its infrastructure, DCHS has deployed VMware(R) ESX Server virtualization software so that individual physical servers are able to run multiple "virtual machines." DCHS has been able to avoid purchasing 30 physical servers for new projects by recycling existing servers. DCHS also believes it will save over 500,000 kilowatt hours per year. In 2009, DCHS expects to consolidate from 187 physical servers to 19 VMware ESX servers. If a virtual machine needs more resources than is being provided, DCHS uses VMware's VMotion(TM) to move the virtual machine from one physical server to other - online, and without service interruption. In addition, if a physical server fails, VMware HA automatically fails over virtual machines to operational servers. VMware Consolidated Backup (VCB), which is integrated with its EMC NetWorker(R) solution, is used to centralize backup of virtual machines.
"Fewer servers to manage in a virtualized environment have contributed to a more resilient infrastructure," said Day. "With VMware
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