Comment by ggm
6 years ago
I've lost more data in hardware RAID than in ZFS but I have lost data in both.
Hardware RAID has very poor longevity. Vendor support and battery backup replacement collide in BIOS and host management badly.
Disclaimer: I work on Dell rackmounts, which means rather than native SAS I am 'Dells hack on SAS' which is a problem and I know its possible to 'downgrade' back to native.
Yeah we started ordering the ones with the supercap so we didn’t have to replace batteries anymore.
Somewhat recently I dealt with LSI and Dell cards. Longevity seemed just fine for a normal 3 year server lifecycle. The only time we had an issue is when the power went down in the data center. The power spike fried a few of the cards. Luckily we had spares.
Way way back I dealt with the Compaq/hp smartarrays. Those were awful. Also anything consumer grade is awful.