Hello RajDias, You can add the 2 new drives to the MD and expand the virtual disk.  The only issue is that when you expand the virtual disk it will probably take 2-3weeks to complete. With having 10x500GB drives changing to 10x1TB you can change them one at a time and let the san rebuild and it will see the new drives.  The bad part about this is that the 1TB drives in the virtual disk group will still be seen as 500GB drives.  There isn’t an option to expand the virtual disk from MDSM or SMCLI.  So what you will need to do is to back up the data and then destroy the virtual disk & recreate it.  Once the disk has been recreated then restore the data to the new virtual disk & it will now have the correct size.  Also I recommend that before you swap the 500GB drives to the 1TB drives that you upgrade the firmware to the latest if haven’t done it already.  The reason is that the 1TB drives can have issues being seen correctly on older firmware.    Let us know if have any other questions.
Hi All,   I am looking to get an expert opinion on the work effort required to upgrade disks in a RAID 5 configuration.  Our ‘SAN’ consists of a MD3000i with a MD1000 expansion.  This SAN has 10, 500GB SATA disks in a RAID 5 configuration.  If we were to change these disks to 1TB each, what is the actual work effort required to do this?  What are the options?  Also we have two empty slots, what is the work effort required to add these two drives to an existing RAID 5?   Current config       Name:                        DG_500GB_SATA                            Status:                     Optimal                                  Capacity                    3.635 TB                                 RAID level:                 5                                        Physical Disk type:         Serial ATA (SATA)                         Enclosure loss protection:  No                                       Current owner:              RAID Controller Module in slot 1         Associated virtual disks and free capacity          Virtual Disk                               Capacity                     USERDATA_01             1.234 TB                 USERDATA_02             1.234 TB                 PROD_SAN01_14                          544.375 GB               VM_TEMPLATES                           200.000 GB               PROD_SAN01_15                          300.000 GB               Free Capacity                        150.094 GB                                                                 Associated physical disks - present (in piece order)           Enclosure     Slot                 1             5                1             6                1             7                1             8                1             9                1             10               1             11               1             12               1             13     Thanks Raj
MD3000i - Increase Disk Size on RAID 5 with 9 Disks