# Racks and elevations

> Cablefolio draws each rack as the real cabinet — front and back elevations at true U scale — so anyone can see what is mounted where before they open the door.

- Front and back elevations, every device at one 19-inch width with its ports drawn on it
- Drag a device type or a saved preset onto the rack, or add one in a free space
- Reserve units for planned gear and number from the top or the bottom
- Several racks side by side, switch stacks, shelves, blanks, and cable managers

## A rack you can read at a glance

A rack page draws the cabinet as it hangs, each device labelled with the units it covers. Every range of units is written one way, such as **U33–32**, on the drawing, the device page, the labels, the reservations, the history, and the report, so a technician on site and an engineer in the office talk about the same space.

The back face shows the PDUs and full-depth gear. Half-unit heights, depth, and mount type are recorded per device, and a rack can count its units from the top or the bottom to match the stencil on the rails.

## Build it fast, keep it right

Drag a device type or a saved preset from the palette onto the rack, then drag a device by its grip to reorder it. **Undo** and **Redo** step through reorders. A preset fills the type, make, model, height, and details, and draws the model’s front and back faces, so a forty-device build is minutes, not an afternoon.

**Reserve units** keeps space for planned gear: placing a device there asks first. **Swap device** replaces the hardware but keeps the place, the name, the port labels, and the links.

## Part of the whole site

A rack lives in a room of a property of a client, so its devices carry their links, power feeds, credentials, photos, and history. The same rack prints in the property’s report and opens from the QR label on its door. See [ports and cable runs](https://cablefolio.com/features/ports-and-cable-runs/) for what connects to it.

## Questions and answers

### Can Cablefolio draw both the front and the back of a rack?

Yes. Every rack has a front and a back elevation at true U scale; full-depth devices and PDUs show on the back face, and the choice of face is one press on the rack page.

### Does Cablefolio support device presets for common hardware?

Yes. Any device can be saved as a preset with its type, make, model, height, details, and drawn front and back faces. Presets can be imported and downloaded as a file, and changing a preset never changes devices already made from it.

### Can I reserve rack units for equipment that has not arrived?

Yes. Reserve units keeps a range for planned gear; anyone placing a device there is asked to confirm, so the space is not taken by accident.

## How-to guides

- [Places and devices](https://cablefolio.com/help/places-and-devices/)
- [Ports and links](https://cablefolio.com/help/ports-and-links/)

## Related features

- [Ports and cable runs](https://cablefolio.com/features/ports-and-cable-runs/): Faceplates, patch panels, end-to-end trace, cable IDs, pathways, and tester readings.
- [Labels, QR codes and NFC](https://cablefolio.com/features/labels-qr-and-nfc/): QR labels and wire flags on sheets, tape, or thermal rolls; camera and NFC lookup (beta).
- [Reports and handover](https://cablefolio.com/features/reports/): Customer sign-off on site, and branded HTML, PDF, and Word as-builts from the live record.