Virtual Machine Sprawl is becoming what Physical Machine Sprawl was a few years ago when everyone thought that VM's were the answer to phsyical machine sprawl. The VM solution is now creating new challenges for efficiency & management.
Its all about what is right for each datacenter's needs - there are tons of great tools out in the market to help make informed decisions. For example take a look at the Sun/Intel x86 Server Refresh (http://www.sunintelroitool.com) that allows for physical & virtual consolidation ROI scenarios from older x86 servers to new Sun servers.
Devin - Solid-State Drives provide more value than just the fact that they don't have moving parts like HDDs for higher reliability. That is only the starting poitns - there are additional points such as improved energy efficiency, faster performance and lower costs per IOPs than HDDs.
There are many different solid state (flash) technlogies being introduced into the market today. If you aren't familar with the Intel X25-E Extreme SATA Solid-State Drives (SSD), I'd recommend you evaluating them for your data center deployments for hybrid storage pools. This is a huge change from existing HDD technology.
Intel SSDs are available in every Sun server based on Intel Xeon processor. www.sun.com/intel
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