CompTIA Server+ (SK0-005)Server Hardware Installation and ManagementEasy
A server administrator is deploying a new server that will host a critical database requiring extremely low latency and high I/O operations per second (IOPS) for its primary storage. The administrator wants to use direct-attached storage (DAS) for this purpose. Which of the following storage technologies would best meet these requirements?
- ANVMe SSD
- BSAS HDD
- CSATA HDD
- DSATA SSD
Show answer & explanationAnswer & explanation
Correct answer: A. NVMe SSD
NVMe SSDs offer significantly higher performance and lower latency compared to other direct-attached storage options, making them ideal for critical database applications.
Why the other options are wrong
- B. SAS HDDs offer better performance than SATA HDDs but are still significantly slower than SSDs.
- C. SATA HDDs are slow and have high latency, unsuitable for critical databases.
- D. SATA SSDs are faster than HDDs but are limited by the SATA interface's bandwidth compared to NVMe.
NVMe (Non-Volatile Memory Express)
A communication interface and protocol developed specifically for SSDs to take advantage of their high speeds, connecting directly to the PCIe bus.
- Utilizes PCIe lanes for direct CPU access.
- Offers significantly lower latency and higher throughput than SATA or SAS.
- Ideal for high-performance applications like databases and virtualization.
Memory trick: NVMe is the Nitro for your Virtual Memory Express.