Hardware considerations (SSD vs HDD + more RAM) I'm currently in the position to decide between two setups: 4 GB RAM + GB SSD storage. 16+ GB RAM + 2 TB HDD storage MongoDB中的大多数磁盘访问模式都没有顺序属性，因此，使用SSD可以使客户获得实质性的性能提升。 使用SATA，PCIe和NVMe SSD可以观察到良好的结果和极高的性价比。
SSD vs HDD Tested: What’s the Difference and Which Is Better?
SSD provides better performance than HDD, it is not mandatory. For more details on SDD please check below, [HOST] Probably not no - you can spend a lot of money on SSD and get broadly the same write endurance as HDD (Intel Optane is particularly good in this regard) but generally speaking you will get less endurance with SSDs than with HDDs -
SSD Disk Mongo DB - Knowledge Article - BMC Community
1 Answer. Sorted by: 3. Using NVMe or traditional HDD drives do not override the purposes of RAID, which is providing better IO rates than a single drive can, replication for increased data durability and larger storage capacity per logical drive. Of course, better performant hardware like NVMe drives fixes some use cases that were SSD provides better performance than HDD, it is not mandatory. For more details on SDD please check below, [HOST] Combining MongoDB with the ECO SSD helps with the challenge of power efficiency and response times, decreasing our MongoDB cluster environmental footprint compared Going through MongoDB's online documentation, I came across the following statement: Solid state drives (SSDs) can outperform spinning hard disks The size of WiredTiger storage engine’s internal cache is tunable through the [HOST]izeGBsetting and should be large enough to hold your entire working set. If the cache does not have enough space See more SSDs vs HDDs Make sure you are using SSD based VMs while deploying MongoDB in production. SSDs are great at random access I/O and you will definitely get better performance (as compared to HDDs) 结论. 1：SSD卡显著改善磁盘IO，io占用在50%以下. 2：SSD卡使mongodb性能稳定。. 在并发，数据量是内存5倍的情况下仍然保证每秒次插入 Storage for MongoDB® Analytics. MongoDB is a leading open source, NoSQL database tool for meeting the challenge of extracting value from Big Data. Adding Ultrastar helium-filled HelioSeal® hard disk drives (HDDs) and either Ultrastar solid-state drives (SSDs) to the solution reduces costs and accelerates business results