StorNext Limits

While the limits listed below are accurate as of the publish date in the footer of this page, Quantum continues to test performance, so the numbers change over time. Quantum updates the limits listed below on an as-needed basis in each release, depending on new features and hardware supported.

For overall StorNext requirements and compatibility, see the StorNext 6 Compatibility Guide.

StorNext Software Limits

Note: The values are tested limits and not architectural limits.

Description Limit

The maximum supported file name.

255 bytes

The maximum supported path length.

1023 bytes

Note: This number is subject to the Operating System limitations.

Note: In Linux, paths may be longer than 1023 bytes, but such paths are not compatible with certain StorNext features including Storage Manager, Directory Quotas.

The maximum number of LUNs per file system.

512

The maximum number of LUNs per data stripe group.

127

The maximum number of stripe groups per file system.

256

The maximum number of tape drives.

256

The maximum number of SAN and LAN clients.

1500

The maximum number of LAN Gateways.

64

Note: This number represents the number of DLC servers supported, not the number of StorNext clients running as NAS gateways. For NAS limits, see StorNext NAS Limits.

The maximum number of files in a non-managed file system.

5 billion

The maximum number of files in a managed file system.

1 billion

The maximum number of managed files on a single MDC.

3.5 billion

The maximum number of file system managers (FSMs) per MDC.

64

Note: The maximum of 64 is for an Xcellis when it is configured with a dedicated metadata array using 24 drives.

Note: The M-series metadata appliance limit varies based on the appliance model.

Note: The maximum of 64 also applies to software-only StorNext solutions.

The maximum number of StorNext mount points on a host.

16

The maximum size of a single file.

2 petabytes

The maximum (default) file size for Storage Manager stores.

2 tebibytes

Note: To adjust the default maximum file size, see System Parameters, and also refer to the MAX_STORE_SIZE system parameter in the fs_sysparm.README file.

StorNext NAS Limits

Description Limit

The maximum number of supported nodes in a StorNext NAS cluster.

8

Note: The number of nodes in a cluster can be higher than 8 in special cases where the number of connected clients is low but the resource requirement per clients is high. In most other cases, exceeding this limit will gate performance on additional nodes due to additional cluster synchronization operations.

The maximum number of connected users on StorNext MDC appliances (per node).

100

Note: Supported StorNext MDC appliances:

  • Xcellis Workflow Director
  • Xcellis Foundation
  • Artico
  • StorNext M660 and M440 Metadata Appliances
  • StorNext Pro Foundation

The maximum number of connected users per StorNext Gateway appliance.

1200

Note: Supported StorNext Gateway appliances:

  • Xcellis Workflow Extender
  • G300 Gateway