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How to backup virtual servers. As server virtualisation assumes a greater
role in the enterprise, administrators face a proliferation ...
... Inc.” Virtual Tape allows companies to backup data faster. ... is expected to be a series
of virtual tape libraries ... for Unix- and Intel-based servers that connect ...
... Perform and monitor daily server backup and weekly ... administration of campus-wide
Linux and Windows servers. ... Area Network (SAN) and virtual server infrastructure ...
... the cluster are left idle to take over the applications (virtual servers) of the ...
passive nodes can also take on additional administrative or backup duties in ...
... Virtual backup servers, hot standby servers and other servers that would require
physical resources in distributed environments require minimal resources when ...
Submitted by zhangn on May 17, 2008
Category: Technology
Words: 1982 | Pages: 8
Views: 55
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As server virtualisation assumes a greater role in the enterprise, administrators face a proliferation of virtual machines residing on the same physical server. Each virtual machine uses a portion of the physical machine's processing, memory and I/O resources. Ideally, server virtualisation provides a means of increasing hardware utilisation.
But as more "logical" servers are consolidated into fewer "physical" computer systems, it's important to protect each virtual machine's data against failure or loss. Virtual servers are the key to providing this protection. This article examines how virtual server backup can be achieved using a mix of traditional backup techniques and specialised virtualisation tools. It also highlights important deployment issues.
What is virtual server backup?
A virtual machine is a complete logical environment existing as a separate entity on a physical server. Each virtual machine is treated and perceived as if it is physical. In fact, a user cannot tell the difference between a real and virtual machine. A data centre may host thousands of virtual machines running on only a fraction of that much hardware, and this presents a serious problem for storage or backup administrators. Data loss on a virtual server can be just as catastrophic as data loss on a physical server, so every virtual server must be backed up as part of a company's backup regimen.
Virtual server backups can be accomplished using a traditional approach with conventional backup software. The backup software is simply installed and configured on each virtual machine, and backups will run normally to any conventional backup target, including tape drives, virtual tape libraries (VTL) or disk storage. "That's probably the most popular way that people do it today because it's familiar," says Lauren Whitehouse, analyst with the Enterprise Strategy Group (ESG). "It ensures a consistent backup; it will give you the granular recovery that you're looking...
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