Lately we’ve been hearing a lot about Solid State Disk (SSD) AKA Flash or NAND chips. Flash technology that make solid state disks possible is increasing both the speed and density of conventional storage. Every day a new article or press release comes out in which a vendor pushes the speed envelope. This is done by either using SSD as cache for regular hard drives (sometimes by incorporating SSD on the hard drive itself), or creating a larger SSD array. So is SSD practical for backup? In my opinion: Only for for those who
need vibration free and high performance storage. An example might be a military plane where video needs to be streamed to onboard storage. We sell both SSD and HDD for our backup removable disk trays. I don’t have a bias, although the vast majority of what we sell is hard drive based. If you want to use SSD our sales reps are happy to do a price quote for you.
SSD is arguably faster than rotating media. But recent articles point out the trade offs: Solid State drives are good for increasing random I/O as measured by IOPS. But as manufacturers push the size envelope, reliability drops off.