Network Storage

Overview

External storage is made available to VMs via IP addresses and according to the protocols chosen by the customer. Network storage is systematically provided in dedicated mode.

The technology used provides, for each Tenant, an SVM (Storage Virtual Machine) which constitutes a dedicated and secure context for the Customer.

Classes des services

Classe of service	Performance	Minimum size	Classe de disponibilité
			One site	Dual site asynchron
Silver	600 IOPS/To	500 Go	▲	▲
Gold	1000 IOPS/To	500 Go	▲	▲
Platinium 3k	3000 IOPS/To	500 Go	▲	▲

The quantity of IOPS actually supplied corresponds to the storage volume ordered times the number of IOPS/GB of the subscribed class of service.

Dual site asynchron means a RPO minimum of 15 minutes.

Example:

500 GB of Platinum 3K network storage enables 1500 IOPS to be used permanently, regardless of the number of VMs using this storage.

Backup

Generally speaking, the customer sets up his own snapshot policy for his network storage.

“One-site” network storage

In this configuration, local storage is used to store snapshots.

The space used for “snapshots” is deducted from the quota subscribed by the customer. Depending on the policy chosen, the customer can reserve between 5% and 20% of the total storage quota for “snapshots”. However, “snapshots” can be activated even without reserved space.

“Replicated dual-site” network storage

In this configuration, remote storage is used to replicate source data.

Replication between the customer’s 2 SVMs takes place via the inter-site link between VDR and CHA.

Replication and retention time are applied on the basis of a list of predefined backup policies.

Restoration is performed by read-only mounting of the replicated (backup) volume from a VM hosted on the backup site.

Management interface

• A self-service portal is provided to the customer for network storage management. Using the portal, the customer can :
• Create NFS v3 shares
• Create SMB/CIFS shares
• Adjust share quotas
• Set rights, manage the list of VMs (NFS) or users (CIFS) with access to a share
• Manage access rights from local accounts and locally-managed rights
• Manage access rights by connecting an LDAP (Active Directory) directory to the SVM, if the customer already has an AD on his infrastructure
• Restore all or part of a backup snapshot (copy files from a client VM)

Link to the shared storage management portal user manual.

Billing

The storage taken into account is the average storage reserved by the customer during the reference month. The quantity of IOPS actually provided corresponds to the volume of storage ordered times the number of IOPS/Gb of the class of service subscribed.

Example: 500 GB of Platinum 3K network storage enables 1500 IOPS to be used permanently, regardless of the number of VMs using this storage.

A flat-rate monthly fee is applied as soon as the first SVM is created.

Principles and limitations

• iSCSI is not yet available directly on the shared storage portal.
• Volumes can be either Unix or Windows (no mix mode).
• Customers can self-create up to 6 volumes per SVM, from 500 GB to 10 TB. For additional volumes or volumes larger than 10 TB, the request must be made via a ticket. Volumes larger than 10 TB will have the same QOS policy as 10 TB (capping).
• Sharing/exporting is done at tree level.
• A share (Windows) is created on a Windows qtree on a Windows volume.
• An export is created in a Unix qtree on a Unix volume.
• APIs are REST API compatible.

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