RAID Mirroring Without data loss

Question

How can one save data from being lost while configuring RAID 1 mirroring on X 3550 M5 lenovo/IBM server having M1215 RAID controller?

What makes you think data will be lost when you set up RAID 1? — D34DM347, Nov 08 '16 at 12:25
When you try to set-up RAID, it warns you the disk data will be lost. — Capkrypt, Nov 22 '16 at 08:23

score 1 · Answer 1 · answered Oct 16 '16 at 12:05

1

The only guarantee that you won't lose data is up-to-date, tested backups taken before you start work.

The raid controller you're talking about might well have its own mechanism for 'safely' converting a populated jbod disk to a raid member whose content is then replicated to a new disk in the new array but I bet it will extol the virtues of backups before starting.

answered Oct 16 '16 at 12:05

Rob Moir

31,884
6
58
89

The problem is M1215 RAID controller doesn't have any resources available online which could confirm if the RAID controller has that mechanism. I couldn't find that mechanism when I tried the RAID configuration. Doing any changes to the RAID configuration would erase whole data. Can't take risk with the data. – Capkrypt Oct 16 '16 at 13:31
Which kinda brings us back to 'take backup, do drive install, restore backup if necessary', doesn't it? – Rob Moir Oct 16 '16 at 14:00
Of course it does!! That's a basic. Isn't it? – Capkrypt Oct 16 '16 at 14:15

RAID Mirroring Without data loss

1 Answers1