Software RAID which one mdadm or mkraid
i'm in a process of building software RAID in centOS. i'm in a learning phase currently.
i used mdadm inorder to create different RAID successfully. i could fail the drive and add in. is mdadm is more useful than mkraid? also if i would like to create multiple raids and combine one should i use assembly mode in mdadm? in general practice is it good to combine two or more raid levels in one.... ifnot in which case is it more useful combining two or more raids. would be glad to hear. thanks kernel99 |
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I've attended some Red Hat training, and they focus on mdadm. I'm sure this didn't answer you question, but hopefully it was of some help. :) |
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My distro doesn't even have mkraid, so I never considered it. And this is the first I've heard of assembly mode in mdadm, so I obviously didn't use it. When I did some research into RAID in Linux, the choices I read about were software RAID versus hardware RAID. For the purpose of this RAID (just my personal desktop machine), I didn't care to spend a lot of money on extra hardware. Plus, my ~/ and all extra software and kernels I build are backed up every night. So there's really nothing I'm risking. If I were to build RAID for a mission critical server, I'd definitely buy the much more expensive hardware and SCSI disks. I'm also not sure what you mean by "combine two or more RAID levels in one?" So here's a glance at my RAID, in case it sheds any light. And also, if a wiser man than I sees something amiss, he can enlighten me. Code:
RAID1 - /dev/md0 - swap Code:
mingdao@silas:~$ sudo /sbin/fdisk -l |
mdadm is usually recommended. mkraid is the older raidtools command.
The assemble command is used to build arrays,and there is no problem using "matrix raid" 1+0, or 1+1 or whatever it is you desire. Quote:
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