What is Netapps trying to prove to prostective buyers of storage ?
Ramsan and the likes have shown how these results gets boosted. Same with vendors publishing benchmarks on their storage with SSD only disks..
To get the results and lopsided comparison vis-a-vis other benchmarks, is at what expense
1. "Single NetApps FAS6240 Storage" Benchmark: Total 193TB storage on the Netapps (70TB unused) & 1TB Flash to assist the 123TB actual storage used in this configuration for the benchmark.
2. "Single 3PAR V800 Storage" Benchmark: Total 573TB storage on 3PAR (83TB Unused) & 0.768TB of Cache to assist 490TB actual storage used in this configuration for the benchmark.
3. "A storage Cluster of 16 IBM V7000" Benchmark: Total 281TB storage across 16 Node V7000 (81TB unused) & 0.448TB of cache (192GB on 8 SVC + 256GB across 16 V7000) to assist 200TB actual storage used in this configuration for the benchmark.
All three delivers 3-7 ms Response time, But
One uses 57% of all Raw storage (123TB Usable) with 1TB Flash to deliver under 3ms Response Time @90% Load
One uses 84% of all Raw Storage (490TB) & delivers under 7ms Response time @90% Load
One uses 70% of all Raw Storage (200TB) & delivers under 6ms Response time @90% Load
Pretty clear what are the "PAINS for the Supposed GAINS" for such performances --
1. Use all of what storage you buy & get get optimal performance ?
2. Do not use "half to third" of what storage you buy ?
3. Pay for flash assisted Performance by putting more GB of Flash & Cache per TB of Storage you intend to you?
As a buyer, I would rather compare: Cost per total Usable storage at an optimal performance of say Sub 10ms Response time
IOPS Physical Usable Capacity Price $ / U $ / P
Capacity (P) (ASU+DP) (U) $
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Netapps FAS6240 250039 193 98 1,672,602 8666 17,067
IBM V7000 520044 282 237 3,598,956 15185 15,185
3PAR V800 450212 573 528 2,965,892 5617 5,617
If I need a Sub 3ms response time for a specific application with a 5TB usable capacity need, I may consider a RAMSAN or a smaller stoarge with lots of SD & Flash/Cache.