An administrator is troubleshooting vDisk performance issues in a Nutanix cluster with hybrid disks. The VMs all have Flash Mode enabled, but users are reporting disk latency.
What could cause these performance issues?
An administrator is troubleshooting vDisk performance issues in a Nutanix cluster with hybrid disks. The VMs all have Flash Mode enabled, but users are reporting disk latency.
What could cause these performance issues?
Data size for flash mode exceeding 25% of the SSD capacity can cause performance issues in a Nutanix cluster with hybrid disks. When the data size for flash mode exceeds this limit, the SSDs may become overloaded, leading to increased disk latency despite having flash mode enabled.
Asnwer A is correct
Flash Mode Considerations: Flash mode is disabled when a node fails. Ensure that the data size for flash mode doesn’t exceed 25% of the SSD capacity. Compression settings on the vDisk storage container can also impact performance.
Answer is A for certain, researched link listed.
I'm pretty sure the right answer is A. This article talks all about the reduction of performance once the data size goes over 25%: https://portal.nutanix.com/page/documents/details?targetId=Web-Console-Guide-Prism-v6_7:wc-vm-flash-mode-c.html
I think B is the answer as In a Nutanix environment, flash mode (also known as "flash acceleration") is designed to improve the performance of VMs by leveraging SSDs for hot data. It allows frequently accessed data to be cached on SSDs, reducing latency. If the VMs' vDisks are spread across multiple storage containers, and some of these containers are not utilizing flash mode effectively, it can lead to latency issues for the VMs whose vDisks are not benefiting from flash acceleration.