### Allowed values for STANDARD storage class

`STANDARD` storage class implies more parity than `REDUCED_REDUNDANCY` class. So, `STANDARD` parity drives should be

- Greater than or equal to 2, if `REDUCED_REDUNDANCY` parity is not set.
- Greater than `REDUCED_REDUNDANCY` parity, if it is set.

## Dependencies { #dependencies }

FastAPI depends on Pydantic and Starlette.

### `standard` Dependencies { #standard-dependencies }

When you install FastAPI with `pip install "fastapi[standard]"` it comes with the `standard` group of optional dependencies:

Used by Pydantic:

In that case, you can simply swap the standard `dataclasses` with `pydantic.dataclasses`, which is a drop-in replacement:

{* ../../docs_src/dataclasses/tutorial003.py hl[1,5,8:11,14:17,23:25,28] *}

1. We still import `field` from standard `dataclasses`.

2. `pydantic.dataclasses` is a drop-in replacement for `dataclasses`.

        assertTrue(DcerpcError.DCERPC_FAULT_CANT_PERFORM >= 0 && DcerpcError.DCERPC_FAULT_CANT_PERFORM <= 0x0000FFFF,
                "DCERPC_FAULT_CANT_PERFORM should be in standard range");
        assertTrue(DcerpcError.DCERPC_FAULT_NDR >= 0 && DcerpcError.DCERPC_FAULT_NDR <= 0x0000FFFF,
                "DCERPC_FAULT_NDR should be in standard range");

<div class="termy">

```console
$ pip install "fastapi[standard]"

---> 100%
```

</div>

/// note

        this.notificationFilter = notificationFilter;
    }

    /**
     * Get the standard lease size for encoding/decoding
     * @return the standard lease context size
     */
    protected int getStandardLeaseSize() {
        // Standard lease V2 size: LeaseKey(16) + LeaseState(4) + Flags(4) + reserved fields
        return 32;
    }

    @Override

        }
    }

    @Nested
    @DisplayName("SmbQueryFileStandardInfo Tests")
    class SmbQueryFileStandardInfoTests {

        @Test
        @DisplayName("Should create and access standard info")
        void testStandardInfoCreation() {
            Trans2QueryPathInformationResponse.SmbQueryFileStandardInfo standardInfo = response.new SmbQueryFileStandardInfo();

            assertNotNull(standardInfo);

For example, to install Uvicorn:

<div class="termy">

```console
$ pip install "uvicorn[standard]"

---> 100%
```

</div>

A similar process would apply to any other ASGI server program.

/// tip

By adding the `standard`, Uvicorn will install and use some recommended extra dependencies.

        * The generated schema will specify that the `set` values are unique (using JSON Schema's `uniqueItems`).
* `bytes`:
    * Standard Python `bytes`.
    * In requests and responses will be treated as `str`.
    * The generated schema will specify that it's a `str` with `binary` "format".
* `Decimal`:
    * Standard Python `Decimal`.
    * In requests and responses, handled the same as a `float`.

## Dependencies { #dependencies }

FastAPI depends on Pydantic and Starlette.

### `standard` Dependencies { #standard-dependencies }

When you install FastAPI with `pip install "fastapi[standard]"` it comes with the `standard` group of optional dependencies:

Used by Pydantic: