diff --git a/docs/storage-node-configuration.md b/docs/storage-node-configuration.md
index 5ac959515..7c757fdba 100644
--- a/docs/storage-node-configuration.md
+++ b/docs/storage-node-configuration.md
@@ -169,52 +169,60 @@ Contains configuration for each shard. Keys must be consecutive numbers starting
`default` subsection has the same format and specifies defaults for missing values.
The following table describes configuration for each shard.
-| Parameter | Type | Default value | Description |
-|-------------------|---------------------------------------------|---------------|-----------------------------------------------------------------------------------------------------------|
-| `mode` | `string` | `read-write` | Shard Mode.
Possible values: `read-write`, `read-only`, `degraded`, `degraded-read-only`, `disabled` |
-| `resync_metabase` | `bool` | `false` | Flag to enable metabase resync on start. |
-| `writecache` | [Writecache config](#writecache-subsection) | | Write-cache configuration. |
-| `metabase` | [Metabase config](#metabase-subsection) | | Metabase configuration. |
-| `blobstor` | [Blobstor config](#blobstor-subsection) | | Blobstor configuration. |
-| `gc` | [GC config](#gc-subsection) | | GC configuration. |
+| Parameter | Type | Default value | Description |
+|-------------------------------------|---------------------------------------------|---------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| `compress` | `bool` | `false` | Flag to enable compression. |
+| `compression_exclude_content_types` | `[]string` | | List of content-types to disable compression for. Content-type is taken from `Content-Type` object attribute. Each element can contain a star `*` as a first (last) character, which matches any prefix (suffix). |
+| `mode` | `string` | `read-write` | Shard Mode.
Possible values: `read-write`, `read-only`, `degraded`, `degraded-read-only`, `disabled` |
+| `resync_metabase` | `bool` | `false` | Flag to enable metabase resync on start. |
+| `writecache` | [Writecache config](#writecache-subsection) | | Write-cache configuration. |
+| `metabase` | [Metabase config](#metabase-subsection) | | Metabase configuration. |
+| `blobstor` | [Blobstor config](#blobstor-subsection) | | Blobstor configuration. |
+| `small_object_size` | `size` | `1M` | Maximum size of an object stored in blobovnicza tree. |
+| `gc` | [GC config](#gc-subsection) | | GC configuration. |
### `blobstor` subsection
+Contains a list of substorages each with it's own type.
+Currently only 2 types are supported: `fstree` and `blobovnicza`.
+
```yaml
blobstor:
- path: /path/to/blobstor
- perm: 0644
- compress: true
- compression_exclude_content_types:
- - audio/*
- - video/*
- depth: 5
- small_object_size: 102400
- blobovnicza:
- size: 4194304
- depth: 1
- width: 4
- opened_cache_capacity: 50
+ - type: blobovnicza
+ path: /path/to/blobstor
+ depth: 1
+ width: 4
+ - type: fstree
+ path: /path/to/blobstor/blobovnicza
+ perm: 0644
+ size: 4194304
+ depth: 1
+ width: 4
+ opened_cache_capacity: 50
```
+
+#### Common options for sub-storages
| Parameter | Type | Default value | Description |
|-------------------------------------|-----------------------------------------------|---------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `path` | `string` | | Path to the root of the blobstor. |
| `perm` | file mode | `0660` | Default permission for created files and directories. |
-| `compress` | `bool` | `false` | Flag to enable compression. |
-| `compression_exclude_content_types` | `[]string` | | List of content-types to disable compression for. Content-type is taken from `Content-Type` object attribute. Each element can contain a star `*` as a first (last) character, which matches any prefix (suffix). |
-| `depth` | `int` | `4` | Depth of the file-system tree for large objects. Must be in range 1..31. |
-| `small_object_size` | `size` | `1M` | Maximum size of an object stored in blobovnicza tree. |
-| `blobovnicza` | [Blobovnicza config](#blobovnicza-subsection) | | Blobovnicza tree configuration. |
-#### `blobovnicza` subsection
+#### `fstree` type options
+| Parameter | Type | Default value | Description |
+|---------------------|-----------|---------------|-------------------------------------------------------|
+| `path` | `string` | | Path to the root of the blobstor. |
+| `perm` | file mode | `0660` | Default permission for created files and directories. |
+| `depth` | `int` | `4` | File-system tree depth. |
-| Parameter | Type | Default value | Description |
-|-------------------------|----------|---------------|-------------------------------------------------------|
-| `path` | `string` | | Path to the root of the blobovnicza tree. |
-| `size` | `size` | `1 G` | Maximum size of a single blobovnicza |
-| `depth` | `int` | `2` | Blobovnicza tree depth. |
-| `width` | `int` | `16` | Blobovnicza tree width. |
-| `opened_cache_capacity` | `int` | `16` | Maximum number of simultaneously opened blobovniczas. |
+#### `blobovnicza` type options
+| Parameter | Type | Default value | Description |
+|-------------------------|-----------|---------------|-------------------------------------------------------|
+| `path` | `string` | | Path to the root of the blobstor. |
+| `perm` | file mode | `0660` | Default permission for created files and directories. |
+| `size` | `size` | `1 G` | Maximum size of a single blobovnicza |
+| `depth` | `int` | `2` | Blobovnicza tree depth. |
+| `width` | `int` | `16` | Blobovnicza tree width. |
+| `opened_cache_capacity` | `int` | `16` | Maximum number of simultaneously opened blobovniczas. |
### `gc` subsection