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Historical Section

The Historical Section includes all traces that are older than 10 years.

The following traces are free to download under the terms of the SNIA Trace Data Files Download License. Please note that cookies must be enabled within your browser in order to download traces.
For questions about downloading using a shell script, see Using Shell Scripts, and for more information about downloading using a Windows batch script, see Using Batch Scripts.

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Trace Name	Details	Related Tools	Year Recorded	Timespan	Record Count	File Size
MSR Cambridge Traces	1-week block I/O traces of enterprise servers at Microsoft Long Description 1-week block I/O traces of enterprise servers at Microsoft Research Cambridge. The citation for the MSRC traces can be found here. Short Description		2007	7 days	434 Million	4.94 GB
TraceFS Sample Traces	Sample traces collected with the TraceFS system. Long Description Sample traces of three benchmark runs collected with the TraceFS tracing system. Additional information about TraceFS can be found at the following URL: http://www.filesystems.org/project-tracefs.html Short Description	This traces are stored in a binary format. The code for opening them can be found at http://www.filesystems.org/project-tracefs.html.	2007	13 days	1 Million	57.7 MB
Animation Dataset	NFS traces from an animation company, taken at a number of different points. Long Description Each set of data is a single contiguous trace from a single network location. Each set has been broken into downloadable ~4 GB chunks by iotta. Download the index.html file for more information. Short Description	All of the traces have been stored in DataSeries (ds) format; a tool to read the traces can be found on this Github page.	2003-2004	6 months	55 Billion	506 GB
Harvard SOS Traces	Traces from Harvard campus and departmental servers Long Description Software to process the NFSdump format is available here. Further information about the traces can be found on the project page. Short Description		2001-2003	over 1 year		158 GB
Multimedia file sizes	File-size data collected on various OSes, including measurements of multimedia files. Long Description File-size data collected for the paper "A Study of Irregularities in File-Size Distributions". Short Description		2001	21 days		17.1 MB
Microsoft Longitudinal Study	The raw data used for the FAST 2007 paper "A Five Year Study Of File System Metadata" by Nitin Agarwal, William J. Bolosky, John R. Douceur, and Jacob R. Lorch. There are five years worth of snapshot data, for years from 2000 to 2004. Long Description Because of the size of the traces, they have been repackaged by IOTTA into 22 zip files. Each zip files contains information from the original snapshot, directory, and file info files, repackaged by user. More information on how the files were repackaged can be found in the readme-iotta.txt file found in each zip file. Short Description		2000-2004	over 4 years	5 Billion	91.1 GB
LASR Traces	System-call I/O traces of thirteen machines taken in 2000 and 2001. Long Description I/O traces taken at the system-call level in 2000 and 2001 as part of a security research project. The traces cover thirteen computers used for software development by CS researchers. The longest trace (machine02) runs from June 2000 to August 2001. The traces are further described in a README file. Short Description	The traces are in the SEER format; a tool to read the traces can be found here.	2000-2001	over 1 year	566 Million	3.17 GB
Cello 1999	1999 traces of Cello server at HP labs. Long Description Disk traces taken from the cello server at HP labs in January through December of 1999. Short Description	Software to process the SRT trace format can be downloaded from the tools section of this website.	1999-2000	12 months		30.7 GB
Microsoft 1998 Static Study	Static snapshot of 4800 PCs at Microsoft. Long Description Static analysis of 10,568 file systems on 4801 workstations at Microsoft. This data formed the basis for the paper "A Large-Scale Study of File-System Contents" by John R. Douceur and William J. Bolosky, published in ACM SIGMETRICS 1999. Short Description		1998	8 days	153 Million	3.73 GB
Cello 1996	1996 traces of Cello server at HP labs Long Description Disk traces take from the cello server at HP labs in September through November of 1996. Short Description	Software to process the SRT trace format can be downloaded from the tools section of this website.	1996	3 months		4.94 GB
Seer Traces (ASCII)	ASCII format of Seer Traces. System-call traces (excluding read/write) of nine laptops, taken in 1996 and 1997. Long Description I/O traces taken at the system-call level, excluding reads and writes but including opens, closes and all other I/O calls, and including process-related calls such as fork and exec. The traces cover nine laptop computers used for software development by CS researchers, some with very heavy activity. The longest trace (norgay) extends from April 2, 1996, to January 28, 1997; the shortest (crockett) is October 11 to November 19, 1996. All traces contain gaps representing times when the machines were rebooted or the trace software failed. Activity by the superuser is generally omitted. Additional information about these traces can be found here. Short Description	These traces are already in readable (ASCII) format.	1996-1997	about 1 year	72 Million	792 MB
Seer Traces	System-call traces (excluding read/write) of nine laptops, taken in 1996 and 1997. Long Description I/O traces taken at the system-call level, excluding reads and writes but including opens, closes and all other I/O calls, and including process-related calls such as fork and exec. The traces cover nine laptop computers used for software development by CS researchers, some with very heavy activity. The longest trace (norgay) extends from April 2, 1996, to January 28, 1997; the shortest (crockett) is October 11 to November 19, 1996. All traces contain gaps representing times when the machines were rebooted or the trace software failed. Activity by the superuser is generally omitted. Additional information about these traces can be found here. Short Description	A tool to read these traces is here.	1996-1997	about 1 year	72 Million	553 MB
Cello 1992	1992 traces of Cello server at HP labs Long Description Disk traces taken from the cello server at HP labs in April through June of 1992. Short Description	Software to process the SRT trace format can be downloaded from the tools section of this website.	1992	2 months		603 MB
HP LAJW	Data from the paper "UNIX disk access patterns" by Chris Ruemmler and John Wilkes Long Description OS version: HP-UX A.08.00 U Machine type: 9000/845 Short Description	Software to process the SRT trace format can be downloaded from the tools section of this website.	1992	2 months		8.08 MB
Cello 1991	1991 traces of Cello server at HP labs Long Description Disk traces taken from the cello server at HP labs in March through June of 1991. Short Description	Software to process the SRT trace format can be downloaded from the tools section of this website.	1991	3 months		357 MB
CMU DFS Traces	System-call traces from the CMU Coda project, 1991-93. Long Description This is a set of system-call traces collected for the Carnegie Mellon Online Coda Project. The traces cover 33 hosts running Mach. several different workloads are represented, including file server, workstation, and time-sharing systems. Short Description	These traces are in a binary format. Tools for processing the traces can be found here	1991-1993	almost 3 years	1 Billion	22.6 GB
Sprite Traces	May 1991 traces from multiple servers at UC Berkeley. *Note: Traces are no longer readable. Long Description The software for opening these traces no longer functions, so they are currently unreadable. Traces were collected from approximately forty workstations connected to four servers. Further information about the traces is available at the Berkeley site, including documentation, software, and sample code. Short Description	These traces are stored in a binary format, code for processing them can be found at the Berkeley site. *Note: This software will no longer compile, so the traces are now unreadable.	1991	5 months		218 MB

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