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i have server with raid card support 8 disk drive and and created raid. but to to large data storage getting full. so i want to know if i add another raid card with same model and capacity. and create same raid like raid 10 or 5 on both raid drives. is possible i will merge both raid storage as one drive. server del T630 internal sotrage bay 8 with 8tbx8 external storage bay 8 with 8tbx8 and use same raid cards for both raids and same raid type like raid 5 or 10

Owais Maqsood
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One possible solution is to use entirely software approach via LVM.

Let suppose you see from OS the hardware arrays as /dev/sda and /dev/sdb. You do not have LVM configured. Have two partitions /dev/sda1 and /dev/sda2 for boot and /.

  1. create new partition in /dev/sda, for example /dev/sda3

  2. create PV on this partition and second disk

    pvcreate /dev/sda3 /dev/sdb

  3. Create VG

    vgcreate bigvolume /dev/sda3 /dev/sdb

  4. create LV

    lvcreate -L 20GB -n bigdata1 bigvolume

  5. create filesystem

    mkfs.ext4 /dev/mapper/bigvolume-bigdata1

  6. Mount is somewhere:

    mount /dev/mapper/bigvolume-bigdata1 /somewhere

In above example type of filesystem and mountpoint are just examples

Romeo Ninov
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  • It's ok . But other question. Is it's harful for raid actual work or not. I mean of use lvm for murge two partions belongs to two different raid group.. will effect raid or not. Is raid will work as normal or not? – Owais Maqsood Apr 06 '23 at 06:46
  • What do you mean by "Is it's harful for raid actual work or not"? And if you have new question please use https://serverfault.com/questions/ask – Romeo Ninov Apr 06 '23 at 06:49
  • I mean raid backup feature will if we use above method? – Owais Maqsood Apr 06 '23 at 08:23
  • @OwaisMaqsood, do you tail about snapshots? And RAID is not a backup – Romeo Ninov Apr 06 '23 at 10:13
  • No sir, I mean raid actual work. If we merge two raids and any drive from one raid got problem. And we replace bad drive. Then data will work or not? – Owais Maqsood Apr 06 '23 at 11:33
  • @OwaisMaqsood, you do not merge RAIDs on hardware level. They continue to be independent. You represent then to the OS as one drive via kind of virtualisation. So if you repair one RAID and start computer the recovery of information on this drive will happen on controller level. And OS will continue to see the same volume – Romeo Ninov Apr 06 '23 at 12:05