Amazon S3 Glacier

I notice you're asking about Amazon S3 Glacier, but your question seems incomplete. Let me provide some general information about Amazon S3 Glacier that might be helpful.

Amazon S3 Glacier offers several storage classes designed for long-term, low-cost data archiving:

1. S3 Glacier Instant Retrieval: Provides up to 68% lower cost than standard S3 for long-lived data that requires milliseconds retrieval. This is suitable for data accessed approximately once per quarter.

2. S3 Glacier Flexible Retrieval (formerly known as S3 Glacier): Delivers low-cost storage for archive data accessed 1-2 times per year with asynchronous retrieval. The retrieval time varies depending on the type of retrieval you choose.

3. S3 Glacier Deep Archive: The lowest-cost storage class, designed for long-term retention and digital preservation of data that may be accessed once or twice a year. Retrieval times range from 12 to 48 hours.

For most users, especially those backing up from systems like Synology NAS, it's recommended to use S3 with Glacier storage classes rather than using Glacier directly. This approach provides the cost benefits of Glacier with the easier management capabilities of S3.

If you're experiencing issues with Glacier or have a specific question about its functionality, please provide more details so I can offer more targeted assistance.
Sources
Total novice, who likes helping beginners get started? | AWS re:Post
Migrate and Archive data for ADAS workloads on AWS | AWS for Industries