D2-310 best practice: Drive replacement | Drive with data

[chrischarles2002]

Hello, I am about to purchase a new D2-310 on Amazon.

I will be putting in 2x WD 4TB RED drives.

Would like to know what the best practices for the following use cases:

• Drive 1 (with existing Data)
  Drive 2 (new)
  >
  • How do you make (create) a RAID 1 without losing data in Drive 1?

• Drive 1 damaged
  Drive 2 (with existing Data)
  >
  • How do you maintain an existing RAID 1, replacing Drive 1 with new hard drive, and without losing data in Drive 2?

• Drive 1 empty
  Drive 2 (with existing Data)
  >
  • How do you create a RAID 1, adding a new hard drive into Drive 1, with a DIFFERENT model and / or DIFFERENT size, and without losing data in Drive 2?

Are there manuals for each of these scenarios?

Most important obviously is when adding 2 drives into new D2-310 (one WITH data and other which would be new drive = blank), creating a RAID 1, but without losing ZERO data (family photos).

[TMS]

The hard disk will be formatted when using DAS to make raid1.

[chrischarles2002]

Sorry, could you provide a little more clarity.

WHICH hard disk will be formatted?
In WHICH use case?

If I purchase the D2-310 and use it for RAID 1= if ever there is a hard drive failure (one drive out of two) > How do I replace just the 1 damaged drive, without any data loss?

When I first get the D2-310 = how do I RAID 1 with one drive that currently hosts the data, and a second new drive being used in the RAID array, without any risk in losing data from original host drive?

Do you have step-by-step guides for each of these use cases on your website?

[TMzethar]

Hi. Please keep the hard drive with data installed, keep your DAS power on, and Stay connected to the computer when you want to replace the damaged drive to fix raid1, or increase a new hard dive to create new raid1. This will keep data of your first hard drive while format and Synchronize the new hard drive. One thing to note is that it is not recommended to write data during synchronization.