models.storage_policy module

class models.storage_policy.StoragePolicy(app_marker_detection=None, cloud_spill_vault_id=None, compression_policy=None, deduplicate_compress_delay_secs=None, deduplication_enabled=None, encryption_policy=None, erasure_coding_info=None, inline_compress=None, inline_deduplicate=None, num_failures_tolerated=None, num_node_failures_tolerated=None)

Bases: object

Implementation of the ‘StoragePolicy’ model.

Specifies the storage options applied to a Storage Domain (View Box).

Attributes:

app_marker_detection (bool): Specifies Whether to support app marker

detection. When this is set to true, app markers (like commvault markers) will be removed from data and put in separate chunks. This way deduplication is improved as it is done on data that has no app markers.

cloud_spill_vault_id (long|int): Specifies the vault id assigned for

an external Storage Target to facilitate cloud spill.

compression_policy (CompressionPolicyEnum): Specifies the compression

setting to be applied to a Storage Domain (View Box). ‘kCompressionNone’ indicates that data is not compressed. ‘kCompressionLow’ indicates that data is compressed using LZ4 or Snappy. ‘kCompressionHigh’ indicates that data is compressed in Gzip.

deduplicate_compress_delay_secs (int): Specifies the time in seconds

when deduplication and compression of data on the Storage Domain (View Box) starts. If set to 0, deduplication and compression is done inline (as the data is being written). Otherwise, post-process deduplication and compression is done after the specified delay.

deduplication_enabled (bool): Specifies if deduplication is enabled

for the Storage Domain (View Box). If deduplication is enabled, the Cohesity Cluster eliminates duplicate blocks of repeating data stored on the Cluster thus reducing the amount of storage space needed to store data.

encryption_policy (EncryptionPolicyEnum): Specifies the encryption

setting for the Storage Domain (View Box). ‘kEncryptionNone’ indicates the data is not encrypted. ‘kEncryptionStrong’ indicates the data is encrypted.

erasure_coding_info (ErasureCodingInfo): Specifies information for

erasure coding.

inline_compress (bool): Specifies if compression should occur inline

(as the data is being written). This field is only relevant if compression is enabled. If deduplication is set to inline, Cohesity recommends setting compression to inline.

inline_deduplicate (bool): Specifies if deduplication should occur

inline (as the data is being written). This field is only relevant if deduplication is enabled.

num_failures_tolerated (int): Number of disk failures to tolerate.

This is an optional field. Default value is 1 for cluster having 3 or more nodes. If erasure coding is not enabled, then this specifies the replication factor for the Storage Domain (View Box). For RF=2, number of failures to tolerate should be specified as 1. If erasure coding is enabled, then this value will be same as number of coded stripes.

num_node_failures_tolerated (int): Number of node failures to

tolerate. If NumNodeFailuresTolerated is set to 2, then we would tolerate up to two node failures. If the following is not set, then the number of node failures tolerated would be same as replication factor - 1 for replicated chunk files or number of coded stripes for erasure coding chunk files.

classmethod from_dictionary(dictionary)

Creates an instance of this model from a dictionary

Args:

dictionary (dictionary): A dictionary representation of the object as obtained from the deserialization of the server’s response. The keys MUST match property names in the API description.

Returns:

object: An instance of this structure class.