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OverviewDeploymentManagementOperationReferenceGlossary
    AFS 1.2.1
  • Deploying Arcfra File Storage>
  • Requirements

Configuration and specifications

File storage cluster configuration

Item Maximum specification
Number of file controllers 16

File storage cluster management capabilities

Item Maximum specification Note
Number of file systems

16*n/(n+1), the result is rounded down.

n is the number of file controllers.

The actual number of file systems that can be created is determined both by the capacity of each file system and the number of available disk slots. For details, refer to the explanation below the table.
Capacity of a single file system 1 PiB
Number of files in a single file system 1 billion -
Size of a single file in the file system 4 TiB -
Sum of the number of subdirectories and files in a single directory 1 million -

Information:

Since the file system needs to occupy disk slots of file controllers, and the number of slots occupied depends on the capacity of the file system, the actual number of file systems that can be created is determined both by the capacity of each file system and the number of available disk slots. Details are as follows:

  • Each file controller can provide 32 disk slots, thus allowing for a total of 32*n slots in one file storage cluster, where n is the number of controllers.
  • The number of required disk slots (denoted as "required_slot") for a single file system is determined by its capacity (denoted as "capacity") and the number of file controllers (denoted as "n"), which are as follows:
    • When n ≤ capacity / 32 TiB, required_slot = (⌈capacity / 32 TiB⌉ + 1) * 2, where "⌈⌉" represents rounding up.
    • When n > capacity / 32 TiB, required_slot = (n + 1) * 2
  • When the number of available disk slots in the file storage cluster is insufficient, new file systems cannot be created. In this case, deploy another file storage cluster and create the required file system on it.