This document lists the quotas and system limits that apply to Google Cloud Managed Lustre.
- Quotas specify the amount of a countable, shared resource that you can use. Quotas are defined by Google Cloud services such as Google Cloud Managed Lustre.
- System limits are fixed values that cannot be changed.
Google Cloud uses quotas to help ensure fairness and reduce spikes in resource use and availability. A quota restricts how much of a Google Cloud resource your Google Cloud project can use. Quotas apply to a range of resource types, including hardware, software, and network components. For example, quotas can restrict the number of API calls to a service, the number of load balancers used concurrently by your project, or the number of projects that you can create. Quotas protect the community of Google Cloud users by preventing the overloading of services. Quotas also help you to manage your own Google Cloud resources.
The Cloud Quotas system does the following:
- Monitors your consumption of Google Cloud products and services
- Restricts your consumption of those resources
- Provides a way to request changes to the quota value and automate quota adjustments
In most cases, when you attempt to consume more of a resource than its quota allows, the system blocks access to the resource, and the task that you're trying to perform fails.
Quotas generally apply at the Google Cloud project level. Your use of a resource in one project doesn't affect your available quota in another project. Within a Google Cloud project, quotas are shared across all applications and IP addresses.
There are also system limits on Managed Lustre resources. System limits can't be changed.
System limits
Managed Lustre enforces the following system limits:
| System limit | Value |
|---|---|
| Minimum storage capacity per Managed Lustre instance | Defined by performance tier:
|
| Maximum storage capacity per Managed Lustre instance | Defined by performance tier:
|
| Maximum file size | 0.5 PiB |
| Maximum number of instances per project | 20 |
Quotas
Available storage capacity quota depends on many factors, including the location of your instance and the performance tier requested. If your project and location have available quota, it is by default applied to the 500 MBps per TiB performance tier.
The quota for Managed Lustre capacity is per Virtual Private Cloud (VPC) network per zone. Any quota increase that has been requested and granted for a specific VPC cannot be used to create a Managed Lustre instance in another VPC.
Quota details
Managed Lustre supports the following quotas:
| Item | Description |
|---|---|
| Read limit per minute | The maximum number of API requests that an IAM user can make to the Google Cloud Managed Lustre API within a one-minute time period. This quota is only for API calls. |
| Storage capacity (GiB) for a throughput of 1000 MBps per TiB per zone per VPC | Storage capacity in GiB for a throughput of 1000 MBps per TiB. |
| Storage capacity (GiB) for a throughput of 500 MBps per TiB per zone per VPC | Storage capacity in GiB for a throughput of 500 MBps per TiB. |
| Storage capacity (GiB) for a throughput of 250 MBps per TiB per zone per VPC | Storage capacity in GiB for a throughput of 250 MBps per TiB. |
| Storage capacity (GiB) for a throughput of 125 MBps per TiB per zone per VPC | Storage capacity in GiB for a throughput of 125 MBps per TiB. |
Request additional quota
Managed Lustre does not support requesting changes to the quota values through the Google Cloud console. Instead, you need to create a Cloud Quotas adjustment requests. This can be done using Google Cloud CLI to call the Cloud Quotas API to create and update quota preferences.
The Cloud Quotas API requires a quota-id. The
following are the quota IDs for each performance tier:
| Performance Tier | Quota ID |
|---|---|
| 1000 MBps per TiB | StorageFor1000MBpThroughputPerTiB |
| 500 MBps per TiB | StorageFor500MBpThroughputPerTiB |
| 250 MBps per TiB | StorageFor250MBpThroughputPerTiB |
| 125 MBps per TiB | StorageFor125MBpThroughputPerTiB |
Create Preference
To create a new quota preference use the
gcloud alpha quotas preferences create command:
gcloud alpha quotas preferences create \
--preferred-value=PREFERRED_VALUE_GiB \
--quota-id=QUOTA_ID \
--service=lustre.googleapis.com \
--project=PROJECT_ID \
--dimensions=zone=ZONE,network_name=NETWORK_NAME \
--email=EMAIL \
--justification=JUSTIFICATION \
--preference-id=PREFERENCE_ID
Update Preference
To update existing quota preference use the
gcloud alpha quotas preferences update command:
gcloud alpha quotas preferences update PREFERENCE_ID \
--preferred-value=PREFERRED_VALUE_GiB \
--quota-id=QUOTA_ID \
--service=lustre.googleapis.com \
--project=PROJECT_ID \
--dimensions=zone=ZONE,network_name=NETWORK_NAME \
--email=EMAIL \
--justification=JUSTIFICATION
The Cloud Quotas adjustment requests are subject to review. You will receive an email acknowledging receipt of your request. If you need further assistance, respond to the email. After reviewing your request, you receive an email notification indicating whether your request was approved.