| Publisher | Cisco Systems | ||
|---|---|---|---|
| Format | 325.3KB PDF | Date added | 23 Aug 2007 |
| Topics | Removable Storage, Storage Management, Hard Drives | ||
| Downloads | 65 | ||
Reducing energy consumption is an important issue for data centers. Among the various components of a data center, storage is one of the biggest consumers of energy. Previous studies have shown that the average idle period for a server disk in a data center is very small compared to the time taken to spin down and spin up. This significantly limits the effectiveness of disk power management schemes. This paper proposes several power-aware storage cache management algorithms that provide more opportunities for the underlying disk power management schemes to save energy. More specifically, the paper presents an off-line power-aware greedy algorithm that is more energy-efficient than Belady's off-line algorithm (which minimizes cache misses only).
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