NS0-157 · Question #124
Which NetApp Virtual Storage Tier component works at the host level?
The correct answer is D. Flash Accel. NetApp Flash Accel is the host-level component of the Virtual Storage Tier, using PCIe flash installed in the application server to cache hot data close to the CPU.
Question
Which NetApp Virtual Storage Tier component works at the host level?
Options
- AFlash Pool
- BFlash IO
- CFlash Disk
- DFlash Accel
- EFlash Cache
How the community answered
(50 responses)- A2% (1)
- C4% (2)
- D92% (46)
- E2% (1)
Why each option
NetApp Flash Accel is the host-level component of the Virtual Storage Tier, using PCIe flash installed in the application server to cache hot data close to the CPU.
Flash Pool is an aggregate-level feature within the NetApp storage controller that uses SSDs to create a hybrid aggregate - it operates at the array level, not the host level.
Flash IO is not a recognized component of the NetApp Virtual Storage Tier product family.
Flash Disk is not a defined component within the NetApp Virtual Storage Tier architecture.
Flash Accel is a host-side caching product that installs as a PCIe flash card with accompanying software in the application server itself, caching frequently read data at the host layer to minimize latency without consuming storage controller resources.
Flash Cache is a PCIe read-cache card that resides inside the NetApp storage controller, operating at the controller level rather than the host level.
Concept tested: NetApp Virtual Storage Tier host-level caching component
Source: https://www.netapp.com/pdf.html?item=/media/16906-ds-3761.pdf
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