Downloading read data

Sequencing reads are available for download through FTP and Aspara protocols in their original format and in an archive generated fastq formats described here.

Submitted data files

Submitted data files are organised by submission accession number under vol1/ directory in<submission accession prefix>/<submission accession>

where <submission accession prefix> contains the first 6 letters and numbers of the SRA Submission accession. For example, the files submitted in the SRA Submission ERA007448 are available at:

Archive generated fastq files

Archive generated fastq files are organised by run accession number under vol1/fastq directory in<dir1>[/<dir2>]/<run accession>

<dir1> is the first 6 letters and numbers of the run accession ( e.g. ERR000 for ERR000916 ),

<dir2> does not exist if the run accession has six digits. For example, fastq files for run ERR000916 are in directory:

If the run accession has seven digits then the <dir2> is 00 + the last digit of the run accession. For example, fastq files for run SRR1016916 are in directory:

If the run accession has eight digits then the <dir2> is 0 + the last two digits of the run accession. 

If the run accession has nine digits then the <dir2> is the last three digits of the run accession. 

Archive generated Fastq are not available for the following data formats submitted to ENA:

  • BAM files containing @PG:longranger
  • CRAM files containing @PG:longranger
  • Complete genomics native (data folder) submissions
  • PacBio native (HDF5) submissions
  • Many ONT native format submissions

Downloading files using FTP

Files can be downloaded through using any FTP client.

Example using wget:



Example using ftp:

Name: anonymous
Password: enter your e-mail address
ftp> cd vol1/ERA012/ERA012008/sff
ftp> get library08_GJ6U61T06.sff

Downloading files using Globus GridFTP

Files can be downloaded through Globus ebi#public endpoint from 'ena' subfolder:

Globus ebi#public ENA endpoint

Downloading files using ENA FTP Downloader

The ENA FTP Downloader is a standalone application that you can download here.

You can download files for a given accession, or upload an Advanced Search or portal API report to perform a bulk download of all files for a given set of criteria.


Downloading files using Aspera

Aspera ascp command line client can be downloaded here. Please select the correct operating system. The ascp command line client is distributed as part of the Aspera connect high-performance transfer browser plug-in.

Your command should look similar to this on Unix:

ascp -QT -l 300m -P33001 -i <aspera connect installation directory>/etc/asperaweb_id_dsa.openssh<file or files to download> <download location>


and on Mac OSX:

ascp -QT -l 300m -P33001 -i <aspera connect installation directory>/asperaweb_id_dsa.openssh<file or files to download> <download location>


On Windows please use quotes to avoid errors caused by spaces in file path:

"%userprofile%\AppData\Local\Programs\Aspera\Aspera Connect\bin\ascp" -QT -l 300m -i "%userprofile%\AppData\Local\Programs\Aspera\Aspera Connect\etc\asperaweb_id_dsa.openssh"<file or files to download> <download location>

Note: The asperaweb_id_dsa.openssh public key was introduced in Aspera Connect plugin 3.3.3.  Earlier versions can still use asperaweb_id_dsa.putty.

Unix Examples:

ascp -QT -l 300m -P33001 -i /etc/aperaweb_id_dsa.openssh .


ascp -QT -l 300m -P33001 -i /etc/asperaweb_id_dsa.openssh .


ascp -QT -l 300m -P33001 -i /etc/aperaweb_id_dsa.openssh .

Latest ENA news

12 Jul 2017: Submission service maintenance - 14/7/17 to 17/7/17

Webin submission services will not be available between Friday 14/7...

07 Jul 2017: Update to Aspera server

EBI has built a new Aspera server on up-dated hardware with the latest Aspera version and configuration. This should improve...

06 Jul 2017: ENA Release 132

Release 132 of ENA's assembled/annotated sequences now available

30 Jun 2017: Taxon support for sequence, WGS and assembly in ENA Browser Tools

You can now download sequence, WGS and assembly data by tax ID using ENA Browser Tools