kcenon::pacs::storage::tier_policy Struct Reference

Tier migration policy configuration. More...

#include <hsm_types.h>

Collaboration diagram for kcenon::pacs::storage::tier_policy:

Public Member Functions
auto	operator== (const tier_policy &other) const noexcept -> bool=default
	Check if two policies are equal.

Public Attributes
std::chrono::days	hot_to_warm {30}
	Time threshold for migrating from hot to warm tier Default: 30 days.
std::chrono::days	warm_to_cold {365}
	Time threshold for migrating from warm to cold tier Default: 365 days (1 year)
bool	auto_migrate {true}
	Enable automatic background migration When false, migration must be triggered manually.
std::size_t	min_migration_size {0}
	Minimum size in bytes for an instance to be considered for migration Smaller instances may not be worth the overhead of migration Default: 0 (no minimum)
std::size_t	max_instances_per_cycle {100}
	Maximum number of instances to migrate per cycle Prevents overwhelming the storage system Default: 100.
std::size_t	max_bytes_per_cycle {10ULL * 1024 * 1024 * 1024}
	Maximum bytes to migrate per cycle Default: 10 GB.

Detailed Description

Tier migration policy configuration.

Defines the rules for automatic migration between storage tiers. Instances are migrated based on their age (time since last access or storage).

Example:

tier_policy policy;
policy.hot_to_warm = std::chrono::days{30};   // Move to warm after 30 days
policy.warm_to_cold = std::chrono::days{365}; // Move to cold after 1 year
policy.auto_migrate = true;                    // Enable automatic migration
 
hsm_storage storage{hot, warm, cold};
storage.set_tier_policy(policy);

Definition at line 102 of file hsm_types.h.

Member Function Documentation

operator==()

auto kcenon::pacs::storage::tier_policy::operator== ( const tier_policy & other ) const -> bool=default

nodiscarddefaultnoexcept

Check if two policies are equal.

Member Data Documentation

auto_migrate

bool kcenon::pacs::storage::tier_policy::auto_migrate {true}

Enable automatic background migration When false, migration must be triggered manually.

Definition at line 113 of file hsm_types.h.

{true};

hot_to_warm

std::chrono::days kcenon::pacs::storage::tier_policy::hot_to_warm {30}

Time threshold for migrating from hot to warm tier Default: 30 days.

Definition at line 105 of file hsm_types.h.

{30};

max_bytes_per_cycle

std::size_t kcenon::pacs::storage::tier_policy::max_bytes_per_cycle {10ULL * 1024 * 1024 * 1024}

Maximum bytes to migrate per cycle Default: 10 GB.

Definition at line 127 of file hsm_types.h.

{10ULL * 1024 * 1024 * 1024};

max_instances_per_cycle

std::size_t kcenon::pacs::storage::tier_policy::max_instances_per_cycle {100}

Maximum number of instances to migrate per cycle Prevents overwhelming the storage system Default: 100.

Definition at line 123 of file hsm_types.h.

{100};

min_migration_size

std::size_t kcenon::pacs::storage::tier_policy::min_migration_size {0}

Minimum size in bytes for an instance to be considered for migration Smaller instances may not be worth the overhead of migration Default: 0 (no minimum)

Definition at line 118 of file hsm_types.h.

{0};

warm_to_cold

std::chrono::days kcenon::pacs::storage::tier_policy::warm_to_cold {365}

Time threshold for migrating from warm to cold tier Default: 365 days (1 year)

Definition at line 109 of file hsm_types.h.

{365};

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The documentation for this struct was generated from the following file:

• include/kcenon/pacs/storage/hsm_types.h