---
title: "Create a PFS"
description: "Create a TIR Parallel File System with a name and a size in TB, and know when it is ready to mount."
content_type: "how-to"
product: "tir-pfs"
platform: "TIR"
url: "/tir/tir-pfs/how-to/create-a-pfs/"
topic: ["create-and-connect"]
---

# Create a PFS

Create a Parallel File System (PFS), ready to mount on an instance, a training cluster, or a Slurm
cluster. Create one before you start a job that needs fast, shared, parallel storage.

## Before you begin

You need a TIR project in Delhi, where PFS is available, and a role with Create
permission on the **Dataset** service in IAM. A PFS belongs to one project, so create it in the
project whose instances, training clusters, and Slurm clusters will mount it.

## Open the create form

In TIR, open your Delhi project. In the side menu, under **Storage**, select **Parallel File
System**, which sits after **Shared File System**.

Select **Create Parallel File-System**.

## Name the PFS

In **Parallel File-System Name**, type a name. It must start with a lowercase letter, end with a
letter or digit, use only lowercase letters, digits, and hyphens, and be at most 30 characters.
Each name must be unique within the project.

## Set the size

Set **PFS Size** to the number of TB you need, using the slider or the number field. You set the size
in whole TB, from a minimum of 1 TB up to the limit set for your account, 250 TB by default.

To go above your current limit, ask for a higher one from this screen. The request opens a support
ticket with E2E, and your limit stays as it is until E2E changes it.

TIR bills a PFS by the hour for the TB you set. Billing starts once the PFS reaches **OK**, runs
the whole time, mounted or unmounted, and stops when you delete it. After an increase, billing
moves to the new size once the increase completes. See [E2E's pricing
page](https://www.e2enetworks.com/pricing).

You pay for the size you set, whatever share of it you use, so choose a size close to what the
workload needs, and clear out old files.

## Create it

Select **Create**. The PFS shows **Pending** while TIR sets it up, then **initializing**. It
reaches **OK** and is ready to mount in about 80 seconds for 1 TB.

TIR emails the person who created the PFS when it reaches **OK**, and also if it is still
**Pending** five minutes after it was created. If creation fails, the PFS shows **error** and
is free. TIR emails the creator and opens a support ticket.

## When the PFS is ready

Once the new PFS's **Status** reads **OK** in **Parallel File System**, it is ready to mount on an
instance, a training cluster, or a Slurm cluster. See [Mount a PFS on an
instance](/tir/tir-pfs/how-to/mount-a-pfs-on-an-instance/) or [Mount a PFS on a training
cluster](/tir/tir-pfs/how-to/mount-a-pfs-on-a-training-cluster/). If creation stalls or ends in error, see
[Troubleshooting TIR Parallel File System](/tir/tir-pfs/troubleshooting/tir-pfs/).