Add two 3TB disks to your server. In OpenManage (OMSA), go to Storage, Virtual Disks and select Reconfigure from the dropdown menu of Available Tasks for your RAID 5.

What I would STRONGLY recommend is that you add ONE disk to your server and convert it from a 5-disk 15TB RAID 5 to a 6-disk 15TB RAID 6. Once complete, add two new disks to your RAID 6 to expand it out to 21TB. With the size of your storage, running RAID 5 pretty much guarantees you will experience data loss during a rebuild when you lose a drive. Your chances of data loss are 10-20 times higher if you are using desktop or NAS drives - drives not certified for this server.

Hi,

OK, There is chance of data loss.

So, its better to configure 6TB in new array.

Thanks for answer.

Shiju Chacko

HI,

Is converting RAID 5 to RAID6 have data loss.

Current HDD Size : 3TB (6 Nos) hdd in Raid 5 and 250GB (2 Nos) HDD in RAID 1.

New HDD Size : 6TB (4 Nos)

No, that's not what I said. What I'm saying is that you should not be using RAID 5 with disks that large at all. Whether you put them all in the same VD or separate VD's, you should convert to RAiD 6 and not use RAID 5 at all.

Is converting RAID 5 to RAID6 have data loss.

No, migrating from RAID 5 to RAID 6 will not cause data loss.

Current HDD Size : 3TB (6 Nos) hdd in Raid 5 and 250GB (2 Nos) HDD in RAID 1. New HDD Size : 6TB (4 Nos)

Then you better create a second/separate Virtual Disk with your new disks. If you use them in your current RAID 5 array, only 3TB of the 6TB will be usable from each disk. Put them in a separate 12TB RAID 6.