---
name: vpc-block_storage_vpc_manage_storage_limits
title: Managing volume count and capacity limits
description: Request an increase to your Block Storage for VPC volume count limit of 300 volumes per account per region. Submit a support case with details about your volume requirements, capacity needs, and usage forecast.
last-updated: 2026-07-30
---

> ## Documentation Index
> The table of contents for this documentation set is at https://cloud.ibm.com/docs/vpc?format=markdown
> The index for all IBM Cloud docs is at: https://cloud.ibm.com/docs/llms.txt
> Use these files to discover more information as needed.

# Managing volume count and capacity limits
{: #manage-storage-limit}

Request an increase to your Block Storage for VPC volume count limit of 300 volumes per account per region. Submit a [support case](https://cloud.ibm.com/unifiedsupport/cases/add){: external} with details about your volume requirements, capacity needs, and usage forecast.
{: shortdesc}

## Volume count and storage limits checklist
{: #manage-storage-limit-checklist}

Review the following checklist items and record your answers. Provide this information when you create a support case.

- **Ticket Subject**:
    >"*Request to Increase VPC Volume Count Limit*".

- **How many extra volumes do you need? Provide your account, region, and the zone where you want more volumes.**
    >*"200 volumes in US South-2"*.

- **How many volumes are primary boot volumes versus secondary data volumes?**
    >*"50% primary volumes, 50% secondary volumes" or "100 primary volumes, 100 secondary volumes".*

- **Of the secondary volumes, how many secondary volumes do you need and of what capacity?**
    >*"75% of the secondary volumes are under 250 GB and 25% are up to 16,000 GB."*

- **Which volume profiles are used: `general-purpose`, `5iops-tier`, `10iops-tier`, `custom`, or `sdp`?**
    >*We request the capacity increase for `sdp` volumes.*    

- **What is the performance level that you require for the new volumes? Provide the name of the volume profile or custom IOPS value.**
    >*"We plan to provision the smaller, 250-GB volumes with general-purpose (3 IOPS/GB) profile, and the large, 16-TB volumes with the custom profile and 48,000 IOPS."*

- **How many total volumes use customer-managed encryption?**
    >*"100 volumes (or 50%) are to use customer-managed encryption".*

- **Provide an estimate of when you expect or plan to provision all of the requested volumes.**
    >*"I expect to create these volumes within 90 days".*

- **Provide a 90-day forecast of expected average capacity usage of these volumes.**
    >*"I expect 25% of the volumes to be used in 30 days, 50% to be used in 60 days and 75% to be used in 90 days".*
    >*"For secondary volumes, I expect to create 50% of the secondary volumes at less than 250 GB within 30 days and secondary volumes greater than 250 GB within 60 days."*

Respond promptly to all questions and statements in your request. They're necessary for processing and approval. If some things are unclear, the support team contacts you to clarify your answers.
{: important}

You're notified about the update to your limits throughout the case process.

## Increasing volume capacity
{: #manage-storage-capacity}

You can increase the capacity of a second-generation volume in 1 GB increments up to 32,000 GB. The maximum capacity of first-generation volumes can be increased up to 16,000 GB. For a custom profile, you can expand the volume based on [sizing limits](https://cloud.ibm.com/docs/vpc?topic=vpc-expanding-block-storage-volumes&format=markdown#expandable-volume-limitations).