What is Thin Provision and Thin Reclamation in Storage Industry

vmwang

于 2009-11-18 17:31:00 发布

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文章标签： vmware disk file

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本文探讨了存储行业中Thin Provision（精简配置）的概念，它允许从自由存储池中仅在真正需要时分配存储资源给应用程序，以解决存储容量利用率不足的问题。此外，还介绍了Thin Reclamation（精简回收），即从文件系统或磁盘中回收未使用的存储空间并将其释放回自由存储池的过程。

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This document discusses the concepts of "Thin Provision" and "Thin Reclamation" in Storage industry.

Thin Provision

Thin Provision is an array vendor solution for allocating storage to applications only when the storage is truly needed, from a pool of free storage. The thin storage solution tries to solve the problem of under utilization of available array capacity. In VMware product ESX, its virtual machine disk can be format 'Thin Provision' so that the disk space for the virtual machine can be allocated dynamically according to the real requirements.

Thin Reclamation

Thin Reclamation means reclaiming free storage from the file systems or disks in the LUN or array so that this storage is released to the free storage pool. It is an opposite concept to 'Thin Provision'. Veritas Storage Foundation supports both Thin Provision and Thin Reclamation.

Regards,

edward @ 17:46:50, 2009-11-18