> ## Documentation Index
> Fetch the complete documentation index at: https://docs.rafftechnologies.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Object Storage features and limits
> Object Storage features, S3 endpoint, pricing tiers, storage class, and platform limits
Updated May 8, 2026
## Features
### Storage class
* **Single class today: NVMe SSD** — every bucket is backed by NVMe SSDs, tuned for high-performance access (low latency, high IOPS, parallel reads/writes)
* **HDD class coming** — a cost-effective tier for cold or archival workloads is on the roadmap; pricing and SDK semantics will land here when it ships
### S3 compatibility
* **Endpoint:** `https://.s3.raffusercloud.com` (virtual-hosted style)
* **Signature version:** AWS SigV4
* **SDK support:** any AWS S3 SDK — boto3 (Python), AWS SDK for Go / Java / JavaScript / .NET, the `aws-cli`, and tools like `mc` / `rclone` / `s3cmd` / Cyberduck
* See [S3 compatibility](/products/store/object-storage/concepts/s3-compatibility) for the full feature matrix
### Bucket and object operations
* Bucket CRUD, list, ACL (private / public-read)
* Object PUT / GET / DELETE / HEAD
* Multipart upload (automatic for files ≥ 10 MB via dashboard)
* Presigned URLs (SigV4)
* CORS configuration
* Custom metadata on objects
### Encryption
* **Encryption at rest** — enabled by default at the platform level
### Bandwidth
* **Free** between Raff VMs / Kubernetes and Object Storage in the same region (private network)
* **Inbound (uploads)** is free, never metered
* **Public internet egress** — first **1 TB / month free**, then **\$0.01/GB** (measured by the Ceph RGW usage API and settled month-end)
## Pricing
Object Storage uses the **same dual-mode billing** as VMs and volumes: subscription by default, PAYG on request — both at the same effective per-GB rate.
### Subscription (default)
A starter package covers most workloads:
| Item | Rate |
| ---------------- | ---------------------------------------------------- |
| **First 100 GB** | \$7 / month flat (included in the base subscription) |
| **Above 100 GB** | \$0.07 / GB / month (pro-rated) |
The first \$7/month covers up to 100 GB across all your buckets in the account. As your usage grows past 100 GB, the additional storage is billed at \$0.07/GB/month, accruing continuously and settled month-end on the 1st against your account balance.
### Pay-as-you-go (enterprise / SMB on request)
PAYG is available for enterprise and SMB customers — contact [support](mailto:support@rafftechnologies.com) to enable.
| Item | Rate |
| -------------- | ------------------------------------------------- |
| Per-GB storage | \$0.07 / GB / month |
| Settlement | Month-end on the 1st against your account balance |
PAYG has **no monthly minimum** — you only pay for what you store, billed at the same per-GB rate as the subscription overage.
### Subscription vs PAYG
| | Subscription | PAYG |
| ------------------------ | ------------------------- | ------------------------------------- |
| Default for new accounts | ✅ | Enable on request |
| Monthly minimum | \$7 (covers first 100 GB) | None |
| Rate above 100 GB | \$0.07 / GB / month | \$0.07 / GB / month |
| Rate at 0 - 100 GB | Included in the \$7 base | \$0.07 / GB / month (no flat package) |
| When you pay | Up front, monthly | At cycle close, month-end |
If you reliably store 100+ GB, **subscription is cheaper** (the first 100 GB costs \$7 instead of \$7/month at the PAYG per-GB rate, which works out the same — but subscription locks the price). If you store much less than 100 GB on average, **PAYG is cheaper** (you skip the flat \$7).
For the wider money flow (balance, cards, credit-on-delete, billing date rotation), see [Billing model](/products/build/virtual-machines/concepts/billing-model).
## Limits
| Item | Limit |
| -------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Multipart upload threshold (dashboard)** | **10 MB** — files at or above this size automatically use multipart upload |
| **Default multipart part size (dashboard)** | **16 MB** (AWS SDK v3 default) |
| **Max parts per multipart upload** | **10,000** (Ceph RGW / S3 standard) |
| **Max object size** | **5 TiB** (Ceph RGW limit) |
| **Max upload via dashboard** | Up to **5 TiB** in theory — the dashboard auto-scales chunk size as `fileSize / 10000` to stay under the 10,000-part cap; practical browser memory limits will hit before this |
| **Max single PUT (under the multipart threshold)** | \~10 MB — anything larger is automatically chunked |
| **Concurrent file uploads (dashboard)** | 3 files at a time |
| **Concurrent chunks per file (dashboard)** | 10 in parallel |
| **Buckets per account** | No hard cap published; subject to overall account capacity |
| **Bucket name length** | **3 - 54 characters** (lowercase letters / digits / `-` / `.`; must start and end with a letter or digit; **globally unique** across all Raff accounts) |
| **Region scope** | Each bucket lives in one region — **`us-east` is the only region today** |
| **Access keys** | Two scopes: **Full Access** (every bucket) or **Limited** (specific buckets via auto-generated bucket policy) — see [Generate access keys](/products/store/object-storage/quickstart-guides/generate-access-keys) |
The dashboard upload dialog says "Large files (100 MB+) use multipart upload automatically" — that's a simplification. The actual switch happens at **10 MB**. Anything above that is multipart; anything below is a single signed PUT.
For SDK access (boto3, aws-cli, etc.), the [standard S3 multipart limits](/products/store/object-storage/concepts/s3-compatibility) apply — minimum 5 MiB per part except the last, maximum 5 GiB per part, up to 10,000 parts per upload.
## Bandwidth
| Item | Cost |
| ------------------------------------------------------ | ------------------------ |
| **Inbound (uploads)** | **Free** — never metered |
| **VM ↔ Object Storage** (same region, private) | **Free** |
| **Kubernetes ↔ Object Storage** (same region, private) | **Free** |
| **Public internet egress** — first **1 TB / month** | **Free** (included tier) |
| **Public internet egress** — above 1 TB | **\$0.01 / GB** |
The first **1 TB of public-internet egress per month is included free**. Beyond 1 TB, egress is billed at **\$0.01/GB** and measured by the Ceph RGW usage API. Inbound and same-region private traffic (between Raff VMs / Kubernetes and Object Storage) are always free.
For most workloads — application backups, ML artifacts, internal data lakes — same-region traffic dominates and the public-egress meter never moves. Public-bucket workloads (static sites, CDN origins, asset distribution) consume the 1 TB free tier first, then start paying \$0.01/GB. At Raff's rate, that's a fraction of major-cloud egress charges; budget for it on heavy public traffic.
Egress accrues continuously and settles month-end on the 1st against your account balance, the same way storage does.
## See also
What S3 features are supported and how to point an SDK.
Account balance, cards, credit-on-delete model.
How money moves across VMs, volumes, and Object Storage.