E-Series Storage Pool
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.
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Storage — what storage array this pool lives on. Mandatory.
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Type — a descriptive value from a list of an enumerated list of possibilities. Most commonly will be “Thin Provisioning” or “RAID Group”.
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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.
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Uses Flash Pool — Yes/No value.
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Redundancy — RAID level or protection scheme. E-Series reports “RAID 7” for DDP pools.
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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.
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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%.
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Snapshot — snapshot capacities used and total, if your storage pool architecture dedicates part of its capacity to segments areas exclusively for snapshots.
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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.
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IOPS — the sum IOPs of all the disks contributing capacity to this storage pool.
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Throughput — the sum throughput of all the disks contributing capacity to this storage pool.