Enum StorageTier 

pub enum StorageTier {
    Hot,
    Warm,
    Cold,
    Archive,
}

Four-level storage tier hierarchy, ordered from fastest/most-expensive to slowest/cheapest.

Variants

Hot

Hot tier: NVMe / memory cache — target for blocks accessed >1 /s.

Warm

Warm tier: fast SSD — blocks accessed >0.1 /s.

Cold

Cold tier: HDD / object store — blocks accessed >0.01 /s.

Archive

Archive tier: tape / deep cold storage — everything else.

Implementations

impl StorageTier

pub fn tier_latency_ms_estimate(&self) -> u64

Representative one-way latency estimate in milliseconds for each tier.

pub fn name(&self) -> &'static str

Human-readable tier name (used as key in tier_summary).

Trait Implementations

impl Clone for StorageTier

fn clone(&self) -> StorageTier

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for StorageTier

impl Debug for StorageTier

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for StorageTier

impl Hash for StorageTier

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for StorageTier

fn eq(&self, other: &StorageTier) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for StorageTier