Can I has a write hole?..
in a RAID 6? Actually, yes. All it takes is large number of disks in array, intensive I/O, a power failure, and some bad luck.
Posts
RAID 5 vs RAID 6
I'm getting tired of people advocating RAID 5 vs. RAID 6. They go on like oh, in a RAID 5 a bit error URE will get you one day! We spent 10,000s dollars sending our RAID5s to OnTrack. Yes, that's tens of thousands of Uncle Sam Dollars. Single bit error in a RAID 5 is much cheaper to recover from than a RAID 6 controller failure or an operator accidentally deleting the array. Ever asked for a quote on RAID 6 recovery?
Test runs
Did a RAID 6 test on an Intel SRCSASBB8I controller (LSI 1078 chipset, also used in Dell PERC 6/i), and it was successful save for a couple minor issues. First we got the R-Studio RAID matrix rendered wrong (data blocks are off by one), and also under the hood it looks like the analysis can use some more noise reduction. Still, the output image is OK. This applies to ReclaiMe Free RAID Recovery build 397 at www.freeraidrecovery.com .