We have one storage IBM DS3512 direct connected to our file server. I view in the storage management software group 1 is using 1TB X 5pcs configure as raid 5 and represent to OS as d:\data and group 2 is using 2 TB X 5 Pcs configured as raid 5 also and represent to OS is e:\backup.
Basically the e:\ for us to use as backup destination for all the server. Recently we have 2 new servers setup and we ate facing insufficient storage space for us to hold all the server backup data and causing the backup job failed.
In the physical panel of storage I can see we still have two empty slot ,so we are intend to add in n new HDD to increase the capacity for backup drive.
Based from scenario above please advice question below:
1.Can i add-in only one 2 TB HDD extend the array without any data lost if can, please guide me what is the proper procedure
2.Is that better is we Purchase 2 X 2 TB HDD configure using Raid 1 and represent new drive to OS and all the new server backup destination will be in new drive.
3.I had discuss with the management before the suggest they want adding only OK me hdd and extend the group 2 because they want to reserve one empty slot for group 1 .May I know which method should I apply ?