This site (ftp://snapshots.rcsb.org) contains yearly snapshots of the PDB archive. At the top level, this FTP archive will accumulate dated directories for each yearly snapshot. Within each dated directory (e.g. 20120102), pub/pdb contains the full directory structure of the FTP archive. In addition, symbolic links lead directly to the sets of experimentally determined coordinate files in PDB, mmCIF, and XML format, e.g. all_pdb_files_20120102, all_mmcif_files_20120102, and all_xml_files_20120102. At the time of the first snapshot (20050106), ftp.rcsb.org did not contain files in XML format. In each case, the coordinate files are contained in subdirectories named after the two middle characters of the PDB ID. For example, 100d is found in the directory '00'. This is the historical directory structure. The date and time stamp of each file indicates the last time the file was modified. 20050106 contains the frozen content of the FTP archive as of 06-Jan-2005. This includes 29040 experimentally determined coordinate files that were current (i.e. not obsolete) as of 06-Jan-2005. 20060103 contains the frozen content of the FTP archive as of 03-Jan-2006. This includes 34421 experimentally determined coordinate files that were current (i.e. not obsolete) as of 03-Jan-2006. 20070102 contains the frozen content of the FTP archive as of 02-Jan-2007. This includes 40933 experimentally determined coordinate files that were current (i.e. not obsolete) as of 02-Jan-2007. 20070731 contains the frozen content of the FTP archive before the 31-Jul-2007 release of remediated data. This includes 44840 experimentally determined coordinate files that were current (i.e. not obsolete) as of 31-Jul-2007. ftp.rcsb.org will remain frozen from this point on. Effective 31-Jul-2007, the production FTP archive will be updated regularly at ftp://ftp.wwpdb.org. 20080107 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 07-Jan-2008. This includes 48161 experimentally determined coordinate files that were current (i.e. not obsolete) as of 07-Jan-2008. 20090105 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 05-Jan-2009. This includes 55072 experimentally determined coordinate files that were current (i.e. not obsolete) as of 05-Jan-2009. 20090316 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 16-Mar-2009, prior to the 17-Mar-2009 release of remediated data. This includes 56366 experimentally determined coordinate files that were current (i.e. not obsolete) as of 16-Mar-2009. 20100104 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 04-Jan-2010. This includes 62388 experimentally determined coordinate files that were current (i.e. not obsolete) as of 04-Jan-2010. 20110103 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 03-Jan-2011. This includes 70231 experimentally determined coordinate files that were current (i.e. not obsolete) as of 03-Jan-2011. 20110707 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 07-Jul-2011, prior to the 13-Jul-2011 release of remediated data. This includes 74297 experimentally determined coordinate files that were current (i.e. not obsolete) as of 07-Jul-2011. 20120102 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 02-Jan-2012. This includes 78237 experimentally determined coordinate files that were current (i.e. not obsolete) as of 02-Jan-2012. 20130101 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 01-Jan-2013. This includes 87090 experimentally determined coordinate files that were current (i.e. not obsolete) as of 01-Jan-2013. 20140102 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 02-Jan-2014. This includes 96692 experimentally determined coordinate files that were current (i.e. not obsolete) as of 02-Jan-2014. 20141203 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 03-Dec-2014. This includes 105383 experimentally determined coordinate files that were current (i.e. not obsolete) as of 03-Dec-2014. This non-annual snapshot was taken prior to the inclusion of large structures in the PDB FTP Archive. 20150102 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 02-Jan-2015. This includes 105499 experimentally determined coordinate files that were current (i.e. not obsolete) as of 02-Jan-2015. 20160101 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 01-Jan-2016. This includes 555GB of 114697 experimentally determined coordinate files that were current (i.e. not obsolete) as of 01-Jan-2016. 20160302 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 02-Mar-2016. This only includes 70GB of PDB validation reports, before they were updated with the following weeks update. 20170101 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 01-Jan-2017. This includes 757GB of 125463 experimentally determined coordinate files that were current (i.e. not obsolete) as of 01-Jan-2017. 20170308 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 08-Mar-2017. This only includes 108GB of PDB validation reports, before they were updated with the following weeks update. 20170710 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 10-Jul-2017. This includes 869GB of 131693 experimentally determined coordinate files that were current (i.e. not obsolete) as of 10-Jul-2017. This is the final snapshot of the FTP archive while it served v4 mmCIF files. 20180101 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 01-Jan-2018. This includes 1034GB of 136472 experimentally determined coordinate files that were current (i.e. not obsolete) as of 01-Jan-2018. 20180321 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 21-Mar-2018. This only includes 137GB of PDB validation reports, before they were updated with the following weeks update. 20190101 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 01-Jan-2019. This includes 1529GB of 147610 experimentally determined coordinate files that were current (i.e. not obsolete) as of 01-Jan-2019. 20200101 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 01-Jan-2020. This includes 577GB of 159140 experimentally determined coordinate files that were current (i.e. not obsolete) as of 01-Jan-2020. 20200610 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 10-Jun-2020. This only includes 215GB of PDB validation reports, before they were updated with the following weeks update. 20200610 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 10-Jun-2020. This only includes 215GB of PDB validation reports, before they were updated with the following weeks update. 20200722 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 22-Jul-2020. This includes 635GB of 166891 experimentally determined coordinate files that were current (i.e. not obsolete) as of 22-Jul-2020. 20200916 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 16-Sep-2020. This only includes 252GB of PDB validation reports, before they were updated with the following weeks update. 20210105 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 05-Jan-2021. This includes 822GB of 173005 experimentally determined coordinate files that were current (i.e. not obsolete) as of 05-Jan-2021. 20220103 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 03-Jan-2022. This includes 911GB of 185541 experimentally determined coordinate files that were current (i.e. not obsolete) as of 03-Jan-2022. 20240101 contains the frozen content of the FTP archive (ftp://ftp.wwpdb.org) as of 01-Jan-2024. This includes 1242GB of 214121 experimentally determined coordinate files that were current (i.e. not obsolete) as of 01-Jan-2024.