Do you know what kind of RAID technology is suitable for you? Do you know whether RAID 0 is fault tolerant or not? What kind of raid duobles, triples your read performance or write performance?

This is just a tip of the iceberg. To know these parameters and memorizing them is hard, so there is an online tool just for this purpose:

http://www.raid-calculator.com/

#hardware #raid #disk #raid_calculator

For optimal performance in terms of the storage layer, use disks backed by RAID-10. RAID-5 and RAID-6 do not typically provide sufficient performance to support a MongoDB deployment.

Avoid RAID-0 with MongoDB deployments. While RAID-0 provides good write performance, it also provides limited availability and can lead to reduced performance on read operations, particularly when using Amazon’s EBS volumes.


#mongodb #mongo #disk #raid #SSD