You can buy a 1TB disk for less than $100. A 10TB backup would cost less than $1000. I backup to an external USB disk. If I required more than 1 I would create a RAID5 with USB disks. If I was really careful, I would have 2 or more disks and rotate them off site. Maybe my Mom's house. No, my car would do just fine. Fact: I don't think you read the archives. If you did, you would remove the failed drive from the array and add it back. And you would have included some debugging info in 1 of your first 5 posts. But you just spammed the list with noise. } -----Original Message----- } From: linux-raid-owner@xxxxxxxxxxxxxxx [mailto:linux-raid- } owner@xxxxxxxxxxxxxxx] On Behalf Of adfas asd } Sent: Friday, October 23, 2009 5:56 PM } To: linux-raid@xxxxxxxxxxxxxxx } Subject: Re: Is My Data DESTROYED?! } } For those of you who don't follow the list closely, we have gone over this } same old ground several times already. } } - Of course I know that RAID is not quite as good as backup. } - Of course I wish that backing up could save many terabytes of data for } less than $10,000. But that is not practical today. } } Fact: I have terabytes of data that I want to keep from losing. } Fact: Disk drives have never been cheaper. } Fact: It is most cost-effective to save terabytes of data on disk drives, } if the proper regimen can be determined for safety. } Fact: After one month's use mdadm RAID has resulted in a failure which } could have been catastrophic had I not determined that somehow JFS } functionality was destroyed. } Fact: Now one of my arrays has gone into degraded mode for mysterious } reasons, and we are so busy arguing about backups that no one can advise } on what to do about this. } } } --- On Fri, 10/23/09, Mattias Wadenstein <maswan@xxxxxxxxxx> wrote: } } > From: Mattias Wadenstein <maswan@xxxxxxxxxx> } > Subject: Re: Is My Data DESTROYED?! } > To: "Christian Pernegger" <pernegger@xxxxxxxxx> } > Cc: linux-raid@xxxxxxxxxxxxxxx, "adfas asd" <chimera_god@xxxxxxxxx> } > Date: Friday, October 23, 2009, 1:57 PM } > On Fri, 23 Oct 2009, Christian } > Pernegger wrote: } > } > >> I believe you are confusing raid with backup. } > > } > > For lots of people the primary role of RAID is as a } > protection against } > > data-loss nowadays. Backups just aren't } > feasible/cost-effective } > > anymore for the amounts of data involved. Sticking } > your head in the } > > sand and repeating that mantra doesn't change that and } > it isn't } > > helping. } > } > Well, claiming that RAID will protect your data under all } > circumstances isn't helping either. Backups will actually } > protect against such things as rm -rf:ing the wrong } > directory or mkfs:ing the wrong device, etc. Things that } > RAID will never protect against. } > } > And I don't see how backups aren't feasable, USB/network } > harddrives keep pace with in-box harddrive sizes just fine. } > Offsite backup might be trickier/costlier, so you might } > constrain those to just the data that you would be really } > sad to see gone if the house burns down (photo album, own } > creations, etc). } > } > /Mattias Wadenstein } > -- } > To unsubscribe from this list: send the line "unsubscribe } > linux-raid" in } > the body of a message to majordomo@xxxxxxxxxxxxxxx } > More majordomo info at http://vger.kernel.org/majordomo-info.html } > } } } } -- } To unsubscribe from this list: send the line "unsubscribe linux-raid" in } the body of a message to majordomo@xxxxxxxxxxxxxxx } More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
