---
title: "Tutorial - Rack Storage Optimization"
slug: "tutorial-rack-storage-optimization"
updated: 2026-09-09T14:06:28Z
published: 2026-09-09T14:06:28Z
canonical: "docs.discngine.com/tutorial-rack-storage-optimization"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.discngine.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Tutorial - Rack Storage Optimization

## Introduction

Managing the content of your racks and regrouping vials can simplify rack-based workflows and reduce the storage space required.

The `Rack Storage Optimization` workflow should be used after manually reordering vials in racks, to reproduce these changes in the Sample inventory.

In this tutorial, you will create and use two racks (RSO_RACK_01 and RSO_RACK_02) containing sparse vials (see the "Prerequisites – Items" section below). All vials will be regrouped into the first rack, RSO_RACK_01.

## Prerequisites

              Required permissions and setup

              

**Sample Processing** role is required to access this workflow.

**Required system configuration:**

- Location Type: `Rack` with a location mask 96 (8x12).
- Container Type: `1 Dram Vial`.
- A location that allows storage of racks (e.g., Freezer).

These should exist by default in the Sample application.

### Items

This tutorial requires specific racks and vials as input. To create the required items, use the attached file [RSO_Tutorial_Racks_Registration.txt](https://cdn.document360.io/dde9293e-c107-4b3e-9774-9c9c296ed970/Images/Documentation/discngine-assay-rso-tutorial-racks-registration.txt?sv=2026-02-06&spr=https&st=2026-11-11T05%3A40%3A20Z&se=2026-11-11T06%3A40%3A20Z&sr=c&sp=r&sig=mRkRc3DvW%2FUjPvvAKPrYMCt36D6X5iMdl16BJj40rgk%3D) to process a Rack Registration from File workflow and a Rack Reception workflow **using external barcodes**.

              
              

For more information about registration and reception, see the [Rack Registration from File tutorial](/public/docs/tutorial-registration-from-file) and the [Rack Reception tutorial](/public/docs/tutorial-reception-from-registration-module).

## Workflow

### Job Creation

[Create a new job](/public/docs/jobs-overview#create-a-job) and select the `Rack Storage Optimization` workflow.

### Requesting

We are placing our vials in the rack `RSO_RACK_01`, so keep the option **Use existing barcode**. The `External barcode` option is useful when moving vials in a rack that is not yet registered in Sample.

- Load the file describing the vial positions in the desired racks. For this tutorial, use the attached file [RSO_Tutorial_Moves.txt](https://cdn.document360.io/dde9293e-c107-4b3e-9774-9c9c296ed970/Images/Documentation/discngine-assay-rso-tutorial-moves.txt?sv=2026-02-06&spr=https&st=2026-11-11T05%3A40%3A20Z&se=2026-11-11T06%3A40%3A20Z&sr=c&sp=r&sig=mRkRc3DvW%2FUjPvvAKPrYMCt36D6X5iMdl16BJj40rgk%3D).
- Set the file delimiter to **Tabulation**.
- Set Target Rack Type to **96 (8x12)**.
- Click `Load File`.

A file mapping region appears. The workflow will move each `VIAL_BARCODE` into the target `RACK_BARCODE` at the requested position (`ROW_ALPHA`, `COLUMN_INDEX`).

- Fill in the mapping accordingly and click `Next`.

### Sourcing

The Sourcing page will confirm that the requested operations are compatible with the source vials (see the `Sourced` column).

- Click `Next`.

### Storing

The [Storing step](/public/docs/jobs-overview#storing) allows you to assign a location to the output racks (racks created during the job).

- Click `Assign Location to Selected` to move the rack location.
- Select **Paris > HTS Lab > Freezer 1** and click `Select` to confirm your choice.
- Click `Next`.

A message box asks if you want to increment the Thawing Cycle of the racks. Click `No` to continue.

### Pipe & Close

The [Pipe & Close step](/public/docs/jobs-overview#pipe-close) provides a summary page where you can review the job and optionally pipe it to another workflow.

For this tutorial, click `Close & Quit` to finish the job.