Datacenter & Hosting · page 18

Totals workload IOPS with read and write mix into a combined requirement.

Converts target IOPS into disk count per drive type with write penalty applied.

Recommends stripe size from workload block size and access pattern.

Computes capacity overhead and fault tolerance from k and m values.

Compares erasure coding and replication on overhead, durability and rebuild cost.

Sizes object storage nodes from object count, average size and replication factor.

Sizes NAS from a share list with growth rates and dedup assumptions.

Builds a user and group quota table from usage and policy inputs.

Projects NAS usage from pasted monthly share usage with linear or percent growth.

Assigns data to hot, warm and cold tiers from an access pattern list.

Computes annual cost per tiering policy from tier prices and data ages.

Flags archive candidates from pasted last access dates and size data.

Projects capacity savings from dedup ratio and data type inputs.

Estimates compression ratio from a data type mix with floor and ceiling ranges.

Computes snapshot reserve from change rate, frequency and retention count.

Builds a zone matrix from host and array port lists.

Builds a LUN to host mapping table from host and volume lists.

Recommends a multipath policy from array family and path count inputs.

Recommends HBA queue depth from workload concurrency and latency targets.

Projects cache hit ratio from workload working set and cache size inputs.

Distributes volumes across array controllers from a pasted volume load list.

Groups volumes into migration waves with downtime and cutover notes.

Builds a GFS tape rotation schedule from tape count and policy inputs.

Builds an offsite media vault register from a tape list and locations.