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During the past two to three years,  many organisations started migrating their Server storage from Old legacy SAN devices ( e.g. EMC Clariion )  to new  powerful SAN storage ( e.g. EMC Symetrix VMAX) because of the low performance and maintenance costs involved with legacy storage.  Depending on the budget allocated for the Storage Migration projects, some organisations  prefer the migration by “direct storage level data replication  using expensive migration tools”,  while the other companies ( who are with limited budget) prefer to do the migrations by host level data replication. In the later method,  the success rate of the migration project directly depends on the skill level and expertise of the  unix administrator who is implementing the migration project.  I believe this hands-on post will give some idea for the solaris admins whoever responsible for the Storage migrations. Before going to this post you might want to refer this post for the pre-planning tasks.

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We all know that storage is key requirement for any server environment and the requirement for storage is always dynamic in nature. When we talk about the cost, providing highly redundant storage to each server is most expensive task for any organization and no company want to waste the storage with fixed allocation to each server. And  Companies  had huge requirement for the applications which has capability to dynamically add or reduce storage to the servers without affecting the operations.  And this requirement increased the demand for user friendly and effective volume manager tools.  Both the Operating System Vendors and third party vendors started providing volume manager tools to the industry, and below are some of the major Volume manager tools in place right now:

• Solaris native Volume manager tools – SVM  and ZFS
• Linux  native volume manager tools – LVM
• Symantic native volume manager tools  – VxVM Full Story