Performance of one task

The tables below show the performance which one user task can achieve without a competitive load in the case of disk accesses to the ETERNUS DX440 S2 storage system:

• I/O rate in the number of IOs per second (IOs/s)

• Throughput in Mbyte/s

The performance was measured for the standardized load types with different block sizes and a read hit rate of 100%: The Mbyte figures are rounded to 1 Mbyte/s.

Load type	Number of IOs/s for one task with block size
	2 KB	16 KB	32 KB	160 KB	480 KB
Sequential read	4,237	2,889	2,103	665	247
Seqsuential write	3,311	2,701	2,210	902	369
Random25	3,894	2,824	2,118	710	269

Load type	Throughput for one task in Mbyte/s with block size
	2 KB	16 KB	32 KB	160 KB	480 KB
Sequential read	8	45	65	103	115
Seqsuential write	6	42	69	140	173
Random25	7	44	66	111	126