Useful IO profiles for simulating various workloads

A buddy of mine [Liang Yang] recently shared the following table with me and I thought you might also find it useful with trying to simulate various workloads.  In particular when testing and evaluating Hyper-V. A tool like IOMeter [from www.iometer.org] can be programmed with the mixes of reads/wrtes and sequential/random IO's detailed below.

Workload Category	I/O Size	Percentage of READ vs. WRITE	Percentage of RANDOM vs. SEQUENTIAL
Web File Server	4KB	95% RD vs. 5% WR	75% RAND vs. 25%  SEQ
Web File Server	8KB	95% RD vs. 5% WR	75% RAND vs. 25%  SEQ
Web File Server	64KB	95% RD vs. 5% WR	75% RAND vs. 25%  SEQ
Decision Support System DB	1MB	READ	RANDOM
Media Streaming	64KB	98% RD vs. 2% WR	SEQUENTIAL
SQL Server Log	64KB	WRITE	SEQUENTIAL
OS Paging	64KB	90% RD vs. 10% WR	SEQUENTIAL
Web Server Log	8KB	WRITE	SEQUENTIAL
OLTP DB	8KB	70% RD vs. 30% WR	RANDOM
Exchange Server	4KB	67% RD vs. 33% WR	RANDOM
Workstation	8KB	80% RD vs. 20% WR	80% RAND vs. 20% SEQ
Video on Demand	512KB	READ	RANDOM

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