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E-Series Storage Pool

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Terms applying to objects or references that you might find on NetApp E-Series storage pool asset landing pages.

E-Series Storage Pool Terminology

The following terms apply to objects or references that you might find on NetApp E-Series storage pool asset landing pages. Many of these terms apply to other data collectors as well.

  • Storage — what storage array this pool lives on. Mandatory.

  • Type — a descriptive value from a list of an enumerated list of possibilities. Most commonly will be “Thin Provisioning” or “RAID Group”.

  • Node — if this storage array's architecture is such that pools belong to a specific storage node, its name will be seen here as a hyperlink to its own landing page.

  • Uses Flash Pool — Yes/No value.

  • Redundancy — RAID level or protection scheme. E-Series reports “RAID 7” for DDP pools.

  • Capacity — the values here are the logical used, usable capacity and the logical total capacity, and the percentage used across these. These value both include E-Series “preservation” capacity, resulting both in numbers and the percentage being higher than what the E-Series own user interface may show.

  • Over-committed capacity — If by using efficiency technologies you have allocated a sum total of volume capacities larger than the logical capacity of the storage pool, the percentage value here will be greater than 0%.

  • Snapshot — snapshot capacities used and total, if your storage pool architecture dedicates part of its capacity to segments areas exclusively for snapshots.

  • Utilization — a percentage value showing the highest disk-busy percentage of any disk contributing capacity to this storage pool. Disk utilization does not necessarily have a strong correlation with array performance — utilization may be high due to disk rebuilds, deduplication activities, etc in the absence of host-driven workloads. Also, many arrays' replication implementations may drive disk utilization while not showing as volume workload.

  • IOPS — the sum IOPs of all the disks contributing capacity to this storage pool.

  • Throughput — the sum throughput of all the disks contributing capacity to this storage pool.