Ken Heard <kensli...@teksavvy.com> writes: > One of my boxes has a RAID1 using two Seagate SATA 3.0 1 tb hard drives. > I need to replace one of them, and I would like to use as a replacement > a Samsung SATA 2.0 1 tb drive which already has on it data which I do > not need to keep. > > My first question is: although both drives are the same size, can I get > away with having one drive a Seagate 3.0 and the other Samsung 2.0?
That depends on your RAID controller. > It occurred to me that if I made the change described in the first > paragraph -- but without somehow making the data already on it > unreadable -- there would be a different data set on each drive; so that > the RAID1 software would not necessarily know which drive should be the > data source to copy to the other drive. It also occurred to me that the > software could combine the data on each drive, so that both drives would > have both data sets. That depends on your RAID controller. It's probably a very good idea to "clean" the drive before plugging it in. "Clean" the drive would mean to use something like dd to overwrite the whole drive with zeroes. > I consequently assume that the data on the replacement drive must > somehow be made unreadable. Is that assumption correct? If so, do the > data have to be "shredded", or is it sufficient simply either to > "delete" them or simply reformat the drive? To actually delete all data on a disk beyond all recoverability, you basically have to melt down the drive. Modern drives usually don't allow you to format them. > Finally, once I have a "clean" new drive installed, will the RAID1 > copying process partition the new drive the same way as the other drive > and copy the files without further human intervention? That depends on your RAID controller. At least it should rebuild the RAID once you told it to use the disk as a replacement for the old one. -- Knowledge is volatile and fluid. Software is power. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/878ulddjtq....@yun.yagibdah.de
