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Questions tagged [raid10]

RAID 10 is a combination of RAID 1 and RAID 0. RAID 10 can also be referred as RAID 1+0

Minimum disks needed for RAID 10 is 4.

When using RAID 10, 2 RAID 1 volumes are created and then these 2 volumes are put in RAID 0 mode.

Do not confuse this with RAID 01, which creates 2 RAID 0 volumes and then mirrors them. RAID10 layout

Linux MD RAID10 is a non-standard level that can permits setting up unusual layouts beyond what is possible with the standard RAID10. MD RAID10 requires a minimum of only two drives.

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Possible to migrate RAID 10 system from 2TB Seagate to 2TB WD?

A couple of our servers have ST32000641AS (2TB Seagate desktop drives) in RAID 10 using an Adaptec 2405 controller. I've been told by Adaptec that this is a bad idea and we have, in fact, already seen one raid system go down using these drives. …
Curtis
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How to recreate a RAID 10 array with mdadm

So our virtual machine has broken (it's actually a Linux machine in Azure) on which we were running a RAID10 array of 4 disks. It's an ubuntu box. From what I can tell the four data disks are fine, it's just the VM that is screwed. Now, I could…
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6 Disk Raid 1+0

I have an HP Smart Array P400i raid controller, with 6 disks, working in a RAID 1+0. This is what it looks like: Mirror Group 0: physicaldrive 1I:1:1 (port 1I:box 1:bay 1, SAS, 72 GB, OK) physicaldrive 1I:1:2 (port 1I:box 1:bay…
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Software Raid 10 on VirtualBox?

I want to learn how to use Software Raid 10, is it possible to use VirtualBox by adding four storage images? This is my plan: 4x 100mb partitions (1 on each drive) configured as a raid 1 for /boot in ext3. Then with the remaining space on each…
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Server cloning: is possible to clone a server using the arrays of another?

Scenario: 2 Server HP Proliant recently bought (exactly the same config), below described. EDIT:HP Proliant DL360 G7 (rack form) 4 (500Gb SATA) disks in RAID 10 configuration Array Alfa: Disks of Bays 1&2 Array Beta: Disks of Bays 3&4 I don't…
Fabricio Araujo
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Would you recommend mdadm raid10 for EC2?

I read a blog article somewhere that RAID10 on EC2 cuts down performance by half compared to RAID0. But when you have critical database data on the volumes, how else do you prevent data loss in case a volume goes bad? (I just had a case where one…
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Linux software RAID 10 implementation

I don't want to force anybody to make it on behalf of me but trust me: i've looked hundreds of sites and i can't find a good starting point for this. I have 4x500Gb HDD's which i want to set up in RAID 10. The most promising description is here, but…
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Raid 5 with hot spare or RAID 10 with no hot spare?

Yes, this is on of those "do my job for me" questions, have some pity:) I'm at the limit for what I can do with the number of hard drives in a server without spending a substantial amount of money. I have four drives left to configure, and I can…
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mdadm: Resume initial sync

I have a new md RAID10 that I created (on a Synology DS416slim, which is besides the point), which was in the process of initial sync: root@ds416slim:~# cat /proc/mdstat Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] md2 :…
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2 x RAID1 vs. RAID10 with four disks

I have a QNAP TS-412 NAS and used two disks so far. I decided to upgrade to four disks and now have options with respect to RAID. I am looking for maximum security against failure of disks (preferably the system should still survive with two disk…
RalfB
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Grow ZFS mirror

I have a ZFS pool with 6 disks in a RAID 10 configuration. I would like to upgrade the drives in one of the mirrors, from 1TB to 3TB drives. I have all the drives installed in the system. I would prefer not to do it by replacing one drive, resilver,…
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Raid 1+0 different disk sizes

I have 2 146GB(146,8 in ORCA) sas drives and 2 72GB(73,4 in ORCA) sas drives. I would like to setup raid 1+0 with these 4 drives. Is it possible to combine the 146GB and the 72GB drives so I get 218GB? When I try to setup the raid I only get…
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Can't get my RAID array out of degraded mode

I've got a 4-drive RAID 10 array that has just had a drive failure. I ignorantly have never practiced how to recover from a failure (I'm a programmer, just keeping this server as a hobbyist) so I'm having to learn this all the hard way right now. I…
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RAID 10 - many slow disks vs fewer fast disks

I am looking to buy HDDs for a single server which will be used as development server. The server will use ESXi as hypervisor and will have some but not too many virtual machines (web server, database server, file server) We have already taken a…
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linux software raid10, identical machines, wildly different results

I am having wildly different software raid10 performance and behavior on two otherwise identical machines. I have two machines which are hardware identical, bought at the same time, with the same software versions, hardware versions, and firmware…
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