試験3V0-23.25 トピック1 問題39 スレッド

A. In OSA, data must be compressed, deduped, and encrypted synchronously in the data path.
Ingesting new data requires the CPU to execute SHA-1 hashing against the massive in-memory hash tables to find duplicates, consuming extreme amounts of CPU cycles.

B. Disabling Deduplication and Compression on this specific cluster would immediately relieve the CPU bottleneck, allowing the data to stream to the NVMe drives as raw blocks.

C. The integration of Deduplication and Encryption is natively incompatible in OSA; the hypervisor must decrypt the data first, dedup it, and then re-encrypt it, causing a double-tax on the CPU.

D. If the CPU is pegged at 100% processing the Dedup hashes, the storage subsystem slows down, triggering DOM client congestion and causing the VM latency the end users are experiencing.

E. Deduplication hash tables are offloaded to the physical Top-of-Rack switches in VCF, meaning the ESXi CPU is a false indicator of the storage bottleneck.