HA-NAS - Frequently Asked Questions

HA-NAS is a fully managed, shared file storage service, based on OpenZFS open-source technology.

HA-NAS enables data to be centralised across different Linux workloads, as well as Windows for multiple scenarios:

• shared and external storage for IT applications (VM, DB, etc.)
• web content management
• file sharing on the network, etc.

Yes, you can access it from your OVHcloud Control Panel by going to the Bare Metal Cloud section, then NAS and CDN.

HA-NAS comes with a 99.99% availability rate.

HA-NAS supports file transfer through NFS (NFSv3) and CIFS (SMB).

HA-NAS is a service that can receive data from all existing OVHcloud services: Bare Metal Cloud (VPS, OVHcloud Dedicated Servers, So you Start, Kimsufi), Public Cloud, Hosted Private Cloud, etc.

You can configure the access control list (ACL) in your OVHcloud Control Panel. Simply enter the IP address of the service for which you want to authorise access to the HA-NAS.

No. You can only access your HA-NAS from the OVHcloud network.

Currently, HA-NAS cannot be integrated into the vRack private network. However, HA-NAS and vRack are not incompatible if you go via the public IP path of the server connected to vRack.

The minimum size of a service is 3 TB, and the maximum size is 144 TB.
We offer the following storage capacities based on 3 TB disks:

• 3 TB
• 6 TB
• 9 TB
• 18 TB
• 36 TB

We offer the following storage capacities on a 12 TB disk base:

• 12 TB
• 24 TB
• 36 TB
• 72 TB
• 144 TB

The storage capacities offered are the usable capacities.

The disks of your HA-NAS are dedicated to your services. The machine’s other resources are shared (RAM, CPU, bandwidth).

Special case: If you sign up to the 144 TB solution, all of the host server’s resources are dedicated to you (RAM, CPU, bandwidth).

There is no limit to the number of services per customer account.

You can create as many partitions as you want. The minimum size is 10 GB and the maximum size is defined by the maximum size of the service.

• Transfer: the service’s bandwidth is shared. Transfer rates cannot be guaranteed by OVHcloud.
• Availability: service availability is guaranteed, and is the subject of a service level agreement. You can view the details in our Terms of Use.

Yes. You can have your NAS interacted simultaneously with several OVHcloud services.

No, you cannot install operating systems on HA-NAS solutions.

Yes, you will need to create one or several partitions, depending on how you will use it. There are no limits to creating partitions.

Currently it is not yet possible to dynamically scale up or down our HA-NAS. To do so, you have to:

1. Order a new HA-NAS with the desired capacity, thus accessing both the new and the previous HA-NAS.
2. Migrate your data by following the guide Migrating data from one HA-NAS to another via NFS.
3. Cancel the old HA-NAS.

Snapshots are instantaneous images of your disk’s state and the data stored on it at that particular point in time. They offer you the first level of backup. You can configure and manage snapshots from your OVHcloud Control Panel.

By default, the snapshot feature is enabled when you create your partition, and the frequency is set at “once every hour” by default.

Users are responsible for managing their backups (tools and policies) inside and outside the service, as well as their business continuity and disaster recovery plans. However, for reasons of infrastructure security and resilience, OVHcloud can take snapshots of the service on a remote server, without any obligation.

In the event of an outage or attack, if OVHcloud has taken a snapshot on a remote server, we can then restore the data from the last available snapshot. Please note, however, that this is done on request and is an optional service that will be billed.

You can manage the frequency of snapshots from your OVHcloud Control Panel. You can choose the frequency from the following options:

• every hour (default)
• once every 6 hours
• once every day
• once every 2 days
• once every 3 days
• once every week

You can also create manual snapshots at any time, save them without any time limit, or delete them. This feature is available in your OVHcloud Control Panel or via the following API call:

You can configure automatic snapshots, and a selection of frequencies are available. No matter what frequency is set, the most recent snapshot taken will replace and delete the previous one. You can also create and delete snapshots on demand.

Only snapshots created “on demand” can be deleted (see previous question How often are snapshots taken?).
Snapshots with a set frequency are automatically deleted, and cannot be deleted manually.

You are allocated additional space on the same physical media to ensure that your snapshots are stored. This space corresponds to at least 15% of the primary volume. In case you exceed this limit, the snapshots will be stored on your main storage space. You cannot use the additional space for anything other than storing your snapshots.

For example, for a 3 TB service, an additional 450 GB is reserved for snapshots.

• For automatic snapshots: one per partition
• For manual snapshots: ten per partition

Snapshots are stored on the same level as your service. In addition, OVHcloud takes a daily snapshot (with a 24-hour retention) on a backup server located in a separate rack.

In the partition concerned, you will find a hidden directory called .zfs, which contains a snapshots directory. The files are available in read only.

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HA-NAS is a service billed monthly by volume (from 3 to 144 TB in stages).

The subscription periods offered are 1 month, 12 months, 24 months and 36 months. At the end of your subscription period, your subscription will be renewed automatically unless you submit a cancellation request. You can do this for the entire duration of your subscription, via the OVHcloud Control Panel.