15. A technician would like to use a cost-effective storage device in a customer's server that will be used as a VM host. This device will be used for all VMs that run from the server. Which of the following should the technician use?
Answer: B
NVM Express (NVMe) storage device is the best choice for a VM host server.
An NVMe storage device provides high-speed data transfer rates and low latency, making it ideal for running multiple virtual machines (VMs) efficiently in a server environment.
A) Optical disk drive
An optical disk drive is not suitable for a VM host server because it is significantly slower than other storage options. While it can store data, the performance limitations of optical media make it impractical for running VMs that require quick access to data.
B) NVMe storage device
An NVMe storage device is the optimal choice for a VM host server due to its superior speed and efficiency. It utilizes the PCIe interface, allowing for rapid data transfer and reduced latency, which is essential for running multiple VMs effectively.
C) 15,000rpm drive
While a 15,000rpm drive offers better performance than standard hard drives, it still cannot match the speed and efficiency of an NVMe storage device. The mechanical nature of a 15,000rpm drive introduces latency that can hinder performance when running numerous VMs.
D) RAID 10 array
A RAID 10 array can enhance redundancy and improve read/write speeds compared to single drives, but it typically relies on traditional hard drives or SSDs that do not offer the same performance level as NVMe devices. Thus, while RAID 10 is beneficial, it is not as cost-effective or efficient as using NVMe for VM hosting.
Conclusion
The NVMe storage device is clearly the best option for a VM host server due to its high speed and low latency, which are critical for optimal performance in virtualized environments. Other options, while they may offer some advantages, fail to provide the same efficiency and speed necessary for running multiple VMs effectively.