> >you could try higher RAID levels (RAID 5) for data integrity. RAID 1 > >will only mirror disks - and that would also mean should there be > >errors in one disk it gets propagated to the mirror as well.
Indeed this is false. It also shows a complete lack of understanding the very basic principles of RAID, so please don't waste much of your time trying to figure out what the guy meant, he is seriously confused and needs to read more on RAID first. > (suposing that it does happen) does not happen with RAID5. Why? With > RAID5 you "checksum" data and in RAID1 you mirror sectors? You can detect inconsistencies in a non-degraded (and redundant) RAID regardless of RAID level (whether your RAID implementation will do it is something else entirely). RAID by itself will not be capable of detecting inconsistencies on a degraded (non-redundant) RAID. RAID does not have checksums, it has error-correction codes. You can call it "parity" if you wish (although that is not strictly correct, IMHO). But don't call it "checksum", please. It confuses those who don't know what they are talking about in the first place. > I've googled for these problems you claim in RAID1 and haven't found > nothing stating that these things could happen! Because they cannot. Oh, a particular RAID1 setup could have much worse failure tolerance than another RAID5 setup, but that's all due to bad design or bad implementation on that singular RAID1 setup in the first place. >just confirm this: There is no SCA controllers. The controllers have > 68 pins wich connect to the hot-swap rack (wich will also receive power > from a regular power cable) and the hot-swap rack will have the sca > connector to connect to a sca disk. Is that it? That is correct AFAIK. -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
