What is HDD?
(Hard Disk Drive)
What is SSD?
(Solid State Drive)
HDDs (Hard Disk Drive) are a legacy storage technology that use spinning disks to read and write data. SSDs (Solid State Drive) are faster and more power efficient than HDDs.
Acess time
HDDs deliver – 6.5 ms
SSDs deliver – 0.1 ms
Performance
HDDs produce: 400 io/s
SSDs produce: 6000 io/s
Energy save
HDDs consumption: 6-15 watts
SSDs consumption: 2-5 watts
Reliability
HDDs failure: 2 %
SSDs failure: 0.5 %
Input & output request time
HDDs request time: 400 – 500 ms
SSDs request time: 20 ms
CPU Power
HDDs average wait: 1 %
SSDs average wait: 7 %
Backup rate
HDDs backup time: 12 hours
SSDs backup time: 3 hours
Price
HDDs price: 50 $
SSDs price: 100 $