I have a new server, that has 6 SATA HDs with 1TB each.
I am using a Hardware Raid
01:00.0 RAID bus controller: LSI Logic / Symbios Logic LSI MegaSAS 9260 (rev 03)
The server came preconfigured with RAID 6 only using 3 Harddrives.
Now I would like to migrate from the current to a Raid 10 using all 6 Harddrives. I have installed MegaCli. The OS is Debian Squeeze.
I understood, that live migration is supported. As the server is new, and does not carry any data, I am not concerned about backup. I just want to migrate to Raid Level 10 before starting to work with the server.
I understood, that I might need to use a syntax similar to
MegaCli –LDRecon -CfgSpanAdd -r10 -Array0[62:0,62:1] -Array1[62:2,62:3] -Array3[62:2,62:3] -a1
This should define a raid 10 with 3 units a 2 drives.
Will this liv- migrate everything without trouble?
My current raid config:
Adapter 0 -- Virtual Drive Information: Virtual Drive: 0 (Target Id: 0) Name : RAID Level : Primary-6, Secondary-0, RAID Level Qualifier-3 Size : 1.816 TB Sector Size : 512 Parity Size : 3.633 TB State : Optimal Strip Size : 256 KB Number Of Drives per span:3 Span Depth : 2 Default Cache Policy: WriteBack, ReadAdaptive, Direct, No Write Cache if Bad BBU Current Cache Policy: WriteBack, ReadAdaptive, Direct, No Write Cache if Bad BBU Default Access Policy: Read/Write Current Access Policy: Read/Write Disk Cache Policy : Disk's Default Encryption Type : None Is VD Cached: No
SOLUTION: I learned, that a migration from 6 to 10 is simple not supported - so I am going to go through the webbios and setting up the raid from the beginning.