On Mon, 4 Jan 2016 16:29:52 -0500 (EST), bitrex Gave us:
RAID is made so that nothing "craps out" dufus. It can handle up to two failed "drive" segments and still "give" all of the data. The two replacements get brought back in and updated and then it is fault tolerant all over again. You should research failure rates on modern microSD chips before you go actually "trying" to get it to fail.
The SATA is actually the slow part of it. He should have made it for a PCIe (4x) interface. Much faster and closer to the CPU and memory.
Depends what you want to do. These days a decent fast SSD or RAID pair of them will pretty much saturate the available IO bandwidth of SATA3.
I suspect in regular use provided you don't put the swap file on it it will be fine. If like me you want write once read many small lookups then solid state disks are a tremendous improvement over spinning rust.
RAID0 is striped for speed and zero fault tolerance you clueless muppet!
Everything in an array of N has to work perfectly or you lose 1/N th of your data splashed across every file.
It probably isn't worth the effort as RAID0 array of matched SSDs will ace it and are designed with wear levelling. I suspect at about 4 drives the SATA to memory transfer bandwidth will become the limiting factor for performance. I find an SSD plenty fast enough as a scratch.
No harm in trying it if you think it will do what you want more cost effectively but I suspect you may be disappointed.
Fault tolerant RAID configurations seem like theyre fairly useless for consumer applications - if one is keeping anything important on a RAID disk at home it should be being imaged to a separate drive and cloud storage regularly anyway...
On Fri, 8 Jan 2016 11:07:15 -0500 (EST), bitrex Gave us:
The benefit of those same systems is faster operation as well. Of course hard, full backups should be done on any system. The fault tolerance means that if one did NOT perform a recent backup, the data will not be lost.
Oops. I guess the question is also one of cost, all things being equal for the same amount of storage you need to pay out double in RAID1. Instead of buying the second HD you could pay for a year of off site cloud backup storage, and one should really have both.