HDDs up, this is a RAID!
Handy admin tips for locating those many drives in your redundant arrays.
Sometimes novice administrators don’t S understand that cloud disk performance management and optimisation can be an art form. Some cloud providers limit individual disk I/O performance to ensure decent performance is available to all.
As an example, in Azure, as disk sizes increase, I/O allowances don’t scale linearly. Those cloud vendors want you to buy the much more expensive SSD rather than the cheaper HDD. Disks can get very expensive as performance and size increase.
Fear not – there is a way around this issue that keeps performance up and costs down: using the Linux mdadm command (software RAID). This enables the administrator to stripe a group of less performant disks together and get the performance of those individual disks combined without affecting availability (loss of one disk). In effect, it creates a RAID 1 disk stripe using software RAID.