NyxBackup

Amazon S3

1. Set up the storage

  1. Sign in to the AWS Management Console and open S3.
  2. Create bucket. Pick a globally unique name and a region close to you, and leave Block all public access on - your backups are private.
  3. Open IAM > Users > Create user (programmatic access), or create an access key for an existing user.
  4. Attach a policy limited to this one bucket. A minimal policy allows s3:ListBucket on the bucket and s3:GetObject, s3:PutObject, s3:DeleteObject on arn:aws:s3:::YOUR-BUCKET/*.
  5. Copy the Access key ID and Secret access key - the secret is shown only once.

2. Connect it in Nyx Backup

New backup set > destination Amazon S3, then enter:

  • Bucket - the bucket name.
  • Region - the bucket’s region (for example us-east-1).
  • Access key ID and Secret access key - from step 5.
  • Storage class (optional) - leave as the default, or pick a cheaper cold tier. See Cold storage tiers below.

Once Test connection succeeds, set a schedule and retention, save the set, and choose Run now. Nyx Backup encrypts everything on your machine before upload, so this destination only ever holds encrypted blobs. Give each machine its own bucket or folder - see Connecting storage.

Tip: scope the key to just this bucket.

Cold storage tiers

S3 offers cheaper tiers for data you rarely restore. Set one in the Storage class field:

  • Instant-access cold - Standard-IA and Glacier Instant Retrieval. Cheaper to store, read immediately, with a small per-GB retrieval fee and a minimum storage duration. A good default for backups.
  • Deep archive - Glacier Flexible Retrieval and Glacier Deep Archive. Cheapest to store, but objects are offline and must be warmed before they can be read. When you restore, Nyx Backup requests the warm-up and waits for it, then downloads - you choose the retrieval speed (Standard, Bulk, or Expedited) and how long the warmed copy stays available. Warming takes minutes to hours depending on the tier and speed, and AWS charges a retrieval fee.

Cold tiers bill a minimum storage duration, so data that changes constantly can cost more than its live size suggests. They suit archives you keep and rarely touch, not fast-churning folders.