This i just a different term used.most people would say that the HDD or storage unit is rebuilding the data. This is BS.nobody will restore the RAID config if they want data intact.but it is always good to backup the config.Ģ. Its just like you writing a book, but you are worried that the main manuscript gets lost or destroyed.so you write page 1 on book A and copy it to book B & book X, write page 2 on book A and copy to book C & Book Y.so no matter what, you have each page on at least 3 book (you may have many books books A, B, C, D.X, Y, Z).ġ. In very layman terms.what RAID does is to store while copy the data into more that one storage unit. Please do help I am very new to this stuff.ģ. what is raid6 doing? If that disk will lose our data then, we have that data on other drives? as we have 15 arrays of drives, and slot 7 is failed.

and hot swap will not harm any other thing.Ģ: You need to resync the RAID and it will take hours, how you can Resync the RAID?ģ. I hope this helps and again this is a very simple overview of RAID5 and RAID6.ġ Backup raid configuration and then restore it, as we will give you a blank disk now. Smaller hard drive rebuilds usually take hours (gigabytes) while larger hard drive rebuilds can take days (terabytes). In most cases, that I'm aware of, the RAID controller will automatically perform this function without any extra user intervention.Ī rebuild time depends on the size of the hard drive, speed of the hard drive, and how heavily the hard drives are being used by users. On the user side you will not see any data loss as long as the hard drive is replaced and rebuilt by the RAID controller card. The RAID controller card then initialized the new drive and begins to rebuild the data. When a hard drive fails and needs to be replaced it is, typically, hot-swapped out with a new hard drive. RAID5 groups the hard drives with the ability to lose 1 hard drive while RAID6 groups the hard drives with the ability to lose 2 hard drives. I'm sure that someone could explain this better but here is a simple explanation.

Raidrive down