RAID - Redundant Array of Independent Disks. A Storage technology to provide redundancy and performance, to reduce I/O bottlenecks involved in using multiple disks for large storage.

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1answer
400 views

curious soft raid 5 setting inconsistency

Lately I bit the bullet and upgrade my OS from Fedora 11 to Fedora 15, and I've been trying very hard to figure out why Fedora 15 can't see the Raid setup that I created in Fedora 11. I think I must ...
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3answers
2k views

Linux + how to verify mirror configuration on linux red-hat

I have an IBM blade server and we've installed RedHat Linux on the machine. How can we check if we have both disks running as a mirror, or if everything is only running on a single disk? What ...
2
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0answers
670 views

Linux Mint installer does not see fakeraid drive

I have a computer with a fakeraid 0 array (the computer came with it, and I don't want to remove my other OS to get rid of it), and I am trying to install Linux Mint. When I first boot up from the ...
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0answers
443 views

Intel Z68 chipset raid5 disappeared

I have this motherboard, it's a gigabyte Intel Z68 chipset. I used the Intel chipset configuration (between BIOS and OS) to configure a 3 disk Raid5 array which I formatted as NTFS (Linux already has ...
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6answers
3k views

Pros and cons of software Parity-RAID (e.g. RAID5)

I was recently told about some problems concerning Parity-RAIDs without a non-volatile cache. More exspensive HW-controllers do have battery-powered caches to finish write-operations in case of power ...
9
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2answers
975 views

Choosing filesystem for a 16TB Raid

I'm just putting together a machine with eight 2TB disks. I will be using Raid 6 (12TB of usable capacity) on top of them, but I'm not sure whether I should make LVM on top of the RAID, or what ...
0
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1answer
501 views

In my Dell R310 server, i would like to install CentOS, but for RAID1 what special care i need?

I have my Dell R310 server to install CentOS latest version, it has 2 hot plug disk drive, about 250GB of each. - But i need to install RAID1 on it. My question is for RAID1 installation with ...
1
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0answers
238 views

Using device node of host bus adapter to send ioctl calls to monitor RAID status

I am interested in determining the status of a RAID array on my system (using Debian, and Intel ICH10R sata RAID controller = fakeRAID). What I have learned so far is that: I can use CSMI I/O ...
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5answers
905 views

Consumer Level software RAID5 and LVM

Hi I am going to build a 6 drive consumer level RAID 5 (10TB) with Ubuntu10.10 and using EXT4 as filesystem, and OS on another drive. Question: Should you use LVM on top of the RAID5 or should just ...
6
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1answer
2k views

mdadm Raid5 gives spares missing events

I succesfully builded up a raid5 array on debian testing (Wheezy). As the manpages and further tell, the array would be created as an out of sync array with just a new spare injected to be repaired. ...
0
votes
1answer
198 views

If there's no /dev/md* and not /proc/mdstat, is it safe to use a second disk as a second disk?

There's two HDs in this server. I don't see an md device (see title) or an mdstat file. So, can I be safe that the second disk is currently unused? Yes, I do want/need the second disk as space much ...
4
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3answers
352 views

What would be a good choice for an elastic file system (for adding storage at a later date)?

I'm currently running a Debian 6.0 server with EXT3, but I'd like to move over to Arch. It's being used as a file server right now with a 1TB drive in it (of which 650GB in it is used). What I'd like ...
6
votes
2answers
2k views

Will the system make sure that mdadm is sync-ed before completing a reboot?

This is a follow up to my crazy mdadm problem. I'm trying to figure out what might have caused sda to get out of sync in the first place. The only thing I can think of is that I had just run a bunch ...
3
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1answer
1k views

installing grub 2 on mdadm, which device?

when installing grub(2) to mdadm devices are you supposed to install it to /dev/sdX or /dev/mdX?
2
votes
1answer
356 views

Drive was unable to assemble into the array

I ran mdadm -A /dev/md0 /dev/sda1 /dev/sdb1 Only /dev/sdb1 was loaded into the array though. I have a few more arrays on the same two drives too. Each time the partition on sda failed. dmesg told ...
7
votes
2answers
531 views

In place upgrade of a software raid 5 array

I run a software raid array for my backups, but my data has outgrown capacity. considering I have a full 2.4TB array with 5*600GB drives and also have 5*2TB drives I would like to swap in. What ...
1
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2answers
393 views

Is their a 'friction free' way to convert RAID1 to RAID5?

What's the best way to convert Linux software RAID 1 array to RAID 5? ( I have already bought the 3rd Hard Disc !)