An Effective Cache Algorithm for Heterogeneous Storage Systems

Table 2

We model different performance of disks based on IBM 9LZX manufactured in progressively order years.

Age (years)	Bandwidth (MB/s)	Seek avg. (ms)	Rotation avg. (ms)
0	20.0	5.30	3.00
1	14.3	5.89	3.33
2	10.2	6.54	3.69
3	7.29	7.27	4.11
4	5.21	8.08	4.56
5	3.72	8.98	5.07
6	2.66	9.97	5.63
7	1.90	11.1	6.26
8	1.36	12.3	6.96
9	0.97	13.7	7.73
10	0.69	15.2	8.59