1
vote
1answer
30 views

Should I enable my Mobo Raid controller or leave it at AHCI?

I am setting up a raid storage volume, should I leave the sata controller on AHCI or switch it to raid when using Ubuntu's software side raid?
1
vote
1answer
14 views

Extending RAID-1 with two more disk (RAID-1 => RAID 1+0)

I have a Ubuntu 12.10 installation with (software) RAID-1 - only for data (root-system and swap are on another drive). Now I would like to add two more drives to the existing RAID 1 (basically to have ...
0
votes
1answer
67 views

When I mount my RAID5, there is constant activity; how can I figure out what it is?

there. I'm using Ubuntu 13.10 64bit. I have a 4-disk RAID5 (3 disks, 1 spare) setup, and it's completely synced/built, and the ext4 filesystem it contains is clean. When I assemble the RAID, all is ...
0
votes
0answers
32 views

How to make ubuntu see my raid1 setup?

I have raid1 setup that i was using in windows. Now I want to see it under ubuntu. Under Disks>Devices I see the 2 x 500gb hard disks as sdb and sdc (on sda is ubuntu) and Contents says "Intel matrix ...
0
votes
1answer
76 views

what is the difference between installing raid form bios and from disk utility in installing system?

what is the difference in configuring raid in Idrak bios and configuring raid in installing Ubuntu or any other system?? is it faster in configuring raid from bios and more good performance and can i ...
0
votes
1answer
65 views

Create partition on new raid1 hardware

In future, I'll need to add more 2 disks over RAID1 on my ubuntu server. I already has a RAID1, but I have more 2 slots in my server and I'll put there more 2 disks to create another RAID1. I never ...
2
votes
0answers
39 views

Strange RAID disk volume usage

I have Ubuntu Server 12.04, and my disk is full. I don't know why; my files don't use more than 5GB. Filesystem Size Used Avail Use% Mounted on ...
1
vote
3answers
62 views

Deleting contents of a disc

I need to completely delete the contents of the folder /data Obviously I launched rm-rf * but it's been running from a long time (I have many large files for a total of nearly 1 TB). Given that the ...
2
votes
2answers
671 views

Activate spare for RAID-5 in Disk Utility

I have a RAID-5. I'm trying to replace a failing drive in Disk Utility GUI. I added a new drive as a spare, then did "Remove Component" for the failing drive. How do I tell it to actually use the ...
3
votes
1answer
408 views

Diagnose complete hang of Ubuntu 12.04.1 Server when starting an I/O intense operation?

At the moment I am trying to migrate data from a software RAID5 (6 disks) over to a software RAID1. The command of choice was: rsync -avxHACPX /mnt/old/ /mnt/new/ However, after the first few files ...
2
votes
3answers
4k views

raid advice with SSD and two HDD

I have a new machine with one 128GB SSD and two 1TB HDD. On the SSD is the OS and my initial thought was to put the two HDD in RAID 1 for user data. After some more thought I came up with two other ...
2
votes
0answers
655 views

12.04 does not boot from the disk after installation

Installed Ubuntu on HP xw4600 workstation using CD not USB. But after installation it does not boot from hard drive. During installation it showed: The entire disk will be used: ...
0
votes
2answers
587 views

Ubuntu raid configuration lost after reboot

I have a JMicron raid controller on the motherboard, and I have a menu in which I can set RAID arrays when the system boots. I've set it to RAID-1 and added my two identical 2TB disks (the OS disk is ...
2
votes
1answer
10k views

How to modify/fix incorrectly detected dmraid (FakeRaid) RAID 10 array

I'm trying to get dmraid to properly detect an existing RAID 10 array, which is working fine within windows 7. In summary, the drive setup and bios partitioning is as following: 2 x SSD (120 GB), ...
1
vote
2answers
333 views

What is Ubuntu's software raid controller partition size limitation?

Does anyone know what the partition size limitation is for the Ubuntu software raid controller? If its 2TB, does anyone know how to increase that limitation to 3TB? This is in regards to a question I ...
2
votes
3answers
3k views

What should the total space be for 4 3TB Drives in RAID10 configuration?

I just configured 4 3TB drives in a RAID-10 configuration but the total disk space in the RAID is 4TB. I used the following guide to setup the RAID-10, RAID-10 Intall. Shouldn't the size if the ...
0
votes
1answer
87 views

View Files from mirrored RAID outside the device

The Product I have is a Western Digital My Book The device has stopped working but there is nothing wrong with either of the two mirrored drives. I would like to take out the two mirrored hard ...
10
votes
1answer
3k views

How do I improve my server disk performance

I have an HP Microserver running Ubuntu 10.04 LTS. It's a low power server with 5 internal drive bays. I use it to backup my remote servers, VPSs and local laptops over the network. I want to get the ...
3
votes
1answer
2k views

How do I unmark a “failed” md device?

In an effort to clean up from a software bug in md, I marked half of a RAID (/dev/sda1 and /dev/sdb1 in RAID1) as faulty using: mdadm /dev/md2 --fail /dev/sdb1 mdadm /dev/md2 --remove /dev/sdb1 But ...
10
votes
7answers
17k views

How can I physically identify a single drive in a RAID array?

I have an external drive bay with 4 eSATA disks in it. My system has a 4-port eSATA card, as well as a pair of internal hardware RAID1 drives. The external drives are in software RAID1 pairs as ...