My Mdadm Raid5 array of 4 drives failed during synchronization after replacement of one failed drive. It threw me to RamFS where after a while I couldn't mount the array any more (don't know what I did...
After a restart which stalled, I did a hard reboot and now mdadm can't see the RAID 6 array anymore, LVM can't find the volume which was on that raid array.
Hello all and thanks for reading.
up until yesterday I had a RAID5 array with 5 devices.
Today I added another 2TB devices (dame size as the others), first i formattted it right then added it to the raid (it showed up as a spare) then I grew the array.
So my experience with RAID is minimal. So I figured I'd come and ask here. We have a 16 drive RAID system that have 15 drives in RAID 5 with a hot spare left over. Recently one of the drives in the RAID was giving errors so I cloned it over to the hot spare and put a new drive in it's spot. I made the new drive the hot spare as I was told.
Hello,
I have 3 x 1.5TB drives is a raid 5 array, at the moment the storage capacity is enough, but soon I will need to expand this. I have a spare 1.5TB drive that I am thinking about adding to the array.
So far I have read mixed articles/posts, some saying it can be done, others say it can't.
From what I understand I use:
I have 6 1tb drives in a RAID5. 1 drive went down. On the RAID was 2 virtual machines that I really need back up and running. The spare drive I have to put in the server is a 1.5tb drive, which exceeds the physical per drive limit of the 2020SA. The drive is found in the disk utility, but it is not found in the array management section. I cannot add the drive to the array to have it rebuild.
I'm using Intrepid and mdadm 2.6.7.
I had a clean stable raid5 array, 5x1tb, before I started. I decided to add another 1tb drive to the array because space was getting low.
I connected the new drive and issued the following commands:
Code:
sudo mdadm --add /dev/md0 /dev/sdg
Hi All, I'm having a bit of a time with MDADM. Basically I have a RAID6 system setup w/ 10 hard drives (1.5GB). Last night I had a failed drive and i accidentally failed out the wrong drive trying to fix it. Right now I can get the array to assemble successfully but I cant read anything off of md0, it can't mount either.
We have 8 300GB SAS drives in a RAID5 + Spare configuration. It seems data capacity planning came up a bit short and I need more disk space. Instead of replacing drives with 600 GB models, I would like to take the Spare drive and add back to the array. Is this posible with the HP ACU without reconfiguring the entire awway and losing data?