# Upload to aws s3 fails

**URL:** <https://community.seqera.io/t/upload-to-aws-s3-fails/1913>\
**Category:** Ask for help\
**Tags:** aws, nf-core\
**Created:** [March 8, 2025, 8:10am UTC](https://community.seqera.io/t/upload-to-aws-s3-fails/1913 "2025-03-08T08:10:01Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![user5](https://dub1.discourse-cdn.com/flex013/user_avatar/community.seqera.io/user5/32/1612_2.png) [@user5](https://community.seqera.io/u/user5)\
**Post date:** [March 8, 2025, 8:10am UTC](https://community.seqera.io/t/upload-to-aws-s3-fails/1913/1 "2025-03-08T08:10:01Z")

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Dear all,  
new to the forum, new to using AWS cloud, and sorry for a very basic question. Got a basic plan on aws, an instance EC2 with 300gb storage on s3, installed an linux 2 AMI, installed java, conda, nextflow, can run the ‘nextflow run nf-core/sarek -r 3.2.3 -profile test,docker --outdir results’ no issues. No I am trying to upload my sample-fastQ files into s3. Upload speed is miserable 1-5MiB/s, upload crashes, when using the AWS CLI or the s3 dashboard in a browser. Tried the s3-accelerate option, moved s3 to closest location (Frankfurt), tried multipart upload with 64MB chunksize already. Local internet connection is at 40-50MiB/s, LAN no wifi. Help appreciated - Kai