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The Web Lab:
A Joint Project of Cornell University and the Internet Archive

• Researchers' Area
• Crawl Sizes Statistics

The Web Laboratory: Crawl Sizes Statistics

This is a partial list of the the web crawls in the collection of the Internet Archive and the progress in downloading them to Cornell.  All sizes are in terabytes (TB)

Web pages are stored in compressed files, known as ARC files, with associated metadata files, known as DAT files.  Many web pages are stored in a single ARC file.  The columns "Total Files" are a count of the ARC and DAT files in the corresponding collections.

The two final columns give the order of priority in downloading the crawls to Cornell and the completed dates.

Crawl Name	Time Period	Total Files per Internet Archive	Total ARC Size	Total DAT Size	Total Crawl Size	Total Files per Crawl as Recorded	Download Order	Completed Date
DD	Feb-April 2001	124,433	1.9	0.306	2.2	187,538	5th	unknown
DE	March-June 2001	55,809	4.3	0.419	4.7	95,328	n/a
DF	May-August 2001	97,472	6.8	0.442	7.2	148,402	n/a
DG	July-Oct 2001	97,304	6.2	0.324	6.5	134,872	n/a
DH	Sept-Dec 2001	60,485	3.9	0.251	4.1	84,286	n/a
DI	Nov 2001-Feb 2002	130,966	7.5	0.485	8	162,130	n/a
DJ	Jan-April 2002	161,734	9.2	0.602	9.8	204,560	2nd	06/11/2006
DK	March-June 2002	124,079	5.5	0.361	5.9	120,622	n/a
DL	Jan-July 2002	205,090	11.2	0.661	11.9	249,568	n/a
DM	July-Oct 2002	80,601	10.1	0.66	10.8	220,002	n/a
DN	Sept-Dec 2002	185,006	11.5	0.814	12.3	250,614	n/a
DO	Nov 2002-Feb 2003	232,666	13.3	0.793	14.1	289,636	n/a
DP	Jan-April 2003	187,130	12.7	0.714	13.4	276,112	3rd	07/03/2007
DQ	March-May 2003	87,353	24.1	1.3	25.4	522,466	n/a
DR	May-August 2003	28,131	20.7	1.2	21.9	448,582	n/a
DS	July-Oct 2003	38,029	24.7	1.4	26.1	535,780	n/a
DT	Sept-Dec 2003	49,246	21.4	1.3	22.7	464,550	n/a
DU	Nov 2003-Feb 2004	86,859	24.6	1.4	26.1	533,316	n/a
DV	Jan-April 2004	126,266	23.7	1.9	25.6	515,260	4th	unknown
DW	March-June 2004	72,050	26	2.2	28.2	563,766	n/a
DX	May-August 2004	662,525	39.5	3.6	43.1	856,164	n/a
DY	July-Oct 2004	714,041	35	3.8	38.7	761,410	n/a
DZ	Sept-Dec 2004	681,237	32.3	3.3	35.5	705,370	n/a
EA	Nov 2004-Feb 2005	766,220	36.2	3.8	40	791,934	n/a
EB	Jan-March 2005	392,875	18.1	2.2	20.3	393,760	1st	unknown
EC	March-April 2005	304,660	13.8	1.8	15.6	301,268	n/a
ED	March-August 2005	714,120	35.6	4.3	39.9	769,948	n/a
EE	n/a	0	13.5	1.7	15.2	309,110	n/a
EF	n/a	0	26.6	1.8	28.4	617,400	n/a
EG	n/a	0	46	2.2	48.2	1,020,064	n/a

 

Legend:

• Total Files IA - The number of files for the crawl as per the Internet Archive
• Total ARC Size - ARC size of the crawl as per the database
• Total DAT Size - DAT size of the crawl as per the database
• Total Crawl Size - equals Total ARC Size + Total DAT Size
• Total Files by RC - This is the count of the total number of files per crawl as recorded in the WebLibraryTracking Databas.
• Download Order - The order in which crawls have to be downloaded
  - 1st - Crawls in 2005
  - 2nd - Crawls in 2002
  - 3rd - Crawls in 2003
  - 4th - Crawls in 2004
  - 5th - Crawls in 2001
  
• Completed Date - Date on which a crawl download is completed

 

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