Got a RAID question. My PC has 2 identical 500gb HDs. My BIOS setup does not show anything related to RAID, I've checked every entry, every option, yet the 9.10 installer "sees" RAID.
So, is my hardware physically set up as RAID? How can I check? I'd like to have it as 2 separate drives, and screw RAID. What do I do?
I have 4 2TB hard drives and I was thinking about using Raid 10. This would give me 4TB correct? My next question is would it be easy to add more hard drives to the raid array. For example if I bought another hard drive can I add it to the array without backing up any data?
Basically I want to be able to start off with 4TB and when the space becomes full add more space as needed.
I am considering implementing an iSCSI shared storage array using SATA SSDs instead of the 15k RPM SAS drives we normally purchase.
We normally use RAID 10 because of spindle contention with the random IO produced by virtualized workloads.
I was wondering if we could switch to RAID 5 or RAID 6 to have more usuable space now that spindle contention is less of an issue.
Hi all,
I have three 1 TB drives on my Ubuntu machine that I was using in a RAID 5 array. I had 50 GB on each that I arranged in a logical partition that I used for the base installation. The other 950 GB I used for the RAID 5 array. Sadly, I managed to format the section that had the base installation. Silly me.
Now I want to get the data off the raid piece.
Hi all,
I'm setting up a backup server (yes, I know raid isn't a backup).
I purchased 4 3TB drives, and I was thinking, is there any point to the performance boost Raid 10 gives over Raid 6? All the accesses will be remote, so even with Gigabit ethernet, I'll max out at 125 MB/s (theoretical).
Before my installation of 12.04 server I read a lot on the forum about raid install and problems with Grub not being able to boot from anything other than a raid 1 array. However I had no problem at all with installation on a raid 6 array (5 disks) using mdadm.
What I did using Alternate 12.04 CD:
1. Choose Manual partion
2. Wipe all 5 drives
3. Assign all drives to a Raid 6 array
4.
So here is what I have currently:
8 SAS Drives total
6 Drives setup as RAID 5 as Virtual 1.
1 Drive setup as Hot Spare.
1 Drive in Ready state that is not part of the RAID and is not set as a hot spare.
Basically, everything on this server is setup on the RAID 5 as one virtual disk (OS, data, etc) and partitioned out. I want to separate things out a bit.
I have an Asus Sabertooth 990FX R2 motherboard which uses the AMD SB950 chipset to create a fakeRAID array (setup for RAID 5 in my case). It is recognized as a RAID array in Windows after install of the appropriate driver.
My understanding of RAID 0 is that the data is split and striped across all of the drives in the array.
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