I have a server with 8x SAS drives attached to hardware LSI RAID controller (MegaCli64) and all 8 drives are configured as single RAID 10 array.
I now want to remove 2 drives and replace them with bigger drives. Result should be one RAID 10 array of 6 drives and second RAID 1 array of 2 drives.
OS : CentOS 6
How can I reduce LSI raid array and remove 2 drives without data loss so that 2 drives could be removed? Server downtime is no problem.
From Google I see that MegaCli64 -LDRecon could help but I have never used it and don't have a test server at present to experiment.
UPDATE 1
[root@n ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda2 49G 8.9G 37G 20% /
/dev/sda5 2.1T 1.6T 457G 78% /backup
/dev/sda1 388M 93M 275M 26% /boot
All drives are of type ext4 in Linux.
/backup is not important, I can easily copy data and copy it back but I certainly do not want to reinstall OS and all configurations and setups of various softwares. It would demand too much time.
UPDATE 2
All current disks (8 in number) are of 600GB in size type SCSI 15k RPM. I want to replace 2 drives with new 4TB drives type SATA 7K RPM.
This is an Supermicro F627R3-R72B+ server with LSI 2208 controller.