While they are sometimes used interchangeably, Hot Swapping and Hot Plugging are technically very different. Here are the links for a Dell PowerEdge server and an HPE ProLiant server. MORE RESOURCES! Our popular RAID configuration tutorials on our YouTube channel explain step-by-step setting up a hot spare when building a RAID array. The system would automatically engage the swapped drive to take over the functions of the failed drive. If we go back to our example of the RAID virtual disk, the server admin would need to manually insert the new drive to replace that failed drive. Should one of the drives within the disk fail, that hot spare is ready to go, seamlessly taking over the functions of the failed drive without any action or intervention by the server’s administrator.Ī Cold Spare is a spare part that will require physical intervention by the user to engage the device. In the world of Enterprise servers, hot spares almost always refer to a hard drive in a RAID virtual disk (although it can technically include printers, switches, and power supply units – more on PSU’s later!). Cold Spar eĪ Hot Spare is a component on constant standby should a primary part fail, go offline or work less than optimally. It’s TechMike’s suggestions to avoid getting caught with your digital pants down! Hot Spare vs. cold spares.Īfter all, nobody wants to have a data loss or a server crash because a spare part was unavailable. To that end, we thought it would be helpful to share what we suggest to keep on hand in terms of spares and the basics of hot-swapping vs. When you consider data mirroring through RAID, Hot-Pluggable PSUs, and Hot Swappable hard drives, there is no question that Enterprise servers – with their mission-critical applications – are built with redundancy in mind.

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