How to reduce performance of storage server?


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I want the storage server to reduce performance after the licence expired, instead of powering it off which seems too violent. I have considered limiting net speed, however some customers may just use Fibre Channel to communicate. As a storage server, it mainly accesses data through disk, so how do I limit the disk I/O speed? Any other better choice to reduce server performance aside from stopping cpu cores?


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To improve the performance of this operation I paralyzed it by creating a thread on application side (I use the Java driver) for each Map/Reduce (note that I don't use sharding mode).

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How to reduce performance of storage server?
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I want the storage server to reduce performance after the licence expired, instead of powering it off which seems too violent. I have considered limiting net speed, however some customers may just use Fibre Channel to communicate. As a storage server, it mainly accesses data through disk, so how do I limit the disk I/O speed? Any other better choice to reduce server performance aside from stopping cpu cores?



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