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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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RAID 10 + bcache + LVM

I'm planning to setup a new RAID 10 array using Linux mdadm with bcache and LVM. The way I think about it is that first I create the RAID 10 array then I use the array as a backing device for bcache then the resulting device is used to create a PV.…
sysmodder
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RAID 10 on Centos 7

I've just set up a RAID 10 on an old server with 4 hard drives with the centos7 installer, but I am very confused about the result Here's the output of /proc/mdstat Personalities : [raid10] [raid1] md123 : active raid1 sda4[0] sdb4[1] sdc4[3]…
Clément F.
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RAID 1+0 with odd number of drives

Recently I set up a Dell R720 to be a file server. 2 of the 16 drives were used for the OS (RAID 1) while the other 14 were used for RAID 10, or so I thought. I opened up OpenManage today and saw that there are 6 spans of drives but in one of those…
Vinny
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mdadm assemble ignoring --force? Raid10 minimal difference in 'Actions' between Harddisks

My server Is runnIng a 4 dIsk software raId 10 based on mdadm. EarlIer today a small power outage shut down the server and now It only boots to the InItrd emergency system (ubuntu 16.04), complaInIng about two of the four dIsks beIng 'possIbly out…
Kotwarrior
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Avoiding same batch of drives being mirrored in a mdraid 10 Linux array

root@RS3617RPxs:~# cat /proc/mdstat Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [raidF1] md3 : active raid10 sde3[8] sdl3[7] sdk3[6] sdj3[5] sdi3[4] sdh3[3] sdg3[2] sdf3[1] 15608786176 blocks super 1.2 64K chunks…
ujjain
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How RAID 1 and RAID 10 become different when there are 8 logical disk?

RAID level 01 is the hybrid version of RAID 1 and 0 and this is illustrated below. Source: Wikipedia.org In COMPUTER ORGANIZATION AND ARCHITECTURE DESIGNING FOR PERFORMANCE (NINTH EDITION), by William Stallings, the RAID level 1 for 8 disk is…
Tharindu Sathischandra
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Single disk failure on RAID10 making data unavailable

I have an odd situation here. I have a Dell R620 with the PERC H310 mini controller. There are 2 RAID arrays, a 2 disk mirror for the OS and a 6 disk RAID 10 for the DATA drive. When a single disk fails in the RAID10 my data becomes unavailable…
Fr0ntSight
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Dell PowerEdge R710 with 6 450GB SAS Drives Only sees 5?

I have this weird issue that I've been trying to figure out but been stuck for a week.. Issue Summary below: 6 BRAND NEW SAS Cheetah drives 450gb on Poweredge R710. Configured Raid 10 with result of 900 GB of storage. When I go to BIOs, it only…
user3571153
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POST event error with IBM x3550 ServeRAID setup

I lean toward software RAID instead of the hardware RAID for recovery concerns. I've read about disasters when a RAID card fails and heard many with success stories restoring with Linux RAID on different RAID controller. My server is IBM x3550 with…
rwfitzy
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Which disks in an mdadm-managed RAID-10 near-layout array mirror each other? How to distribute it on multiple SATA controllers?

I'm running a small raid10 mdadm array that looks like follows: # cat /proc/mdstat Personalities : [raid10] md0 : active raid10 sdd[3] sdc[2] sda2[0] sdb2[1] 5859211264 blocks super 1.2 512K chunks 2 near-copies [4/4] [UUUU] First off, I am…
Natanji
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megaraid storage manager doesn't see localhost raid

we have linux red hat 6 on ibm server and we had raid 10 on it which we monitored with megaraid storagemanager and everything was fine. but on 3 days ago we restarted server (poweroff, pressed button ) and after that we realised that megaraid…
user402258
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lsi megaraid convert raid 0 to raid 10 without data loss?

I am using a lsi megaraid controller with firmware version 2.130.353-1819 (aug 09 2012). There I had a raid 5 with 4x4tb disks. What I wanted to do is to migrate from raid 5 to raid 10. The megaraid storage manager gave me only the opportunity to…
trashbox2k
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Is It Bad Practice to Run 3 Copy MD Raid10 Array in Degraded State?

Is it bad practice to run a 3 copy MD RAID10 array on two drives with a missing drive in place of a 2 copy MD RAID10 array on two drives to allow for the addition of a third drive in the future? We are migrating servers and I will build a new array…
Damon
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RAID data integrity issue [ RocketRAID 3522 Controller using RAID 1/0 Windows ]

I need some advice on how to proceed with an issue that I realized I had with data corruption on a 4TB RAID 1/0 array using the RocketRAID 3522 Controller. I'm noticing that the SHA1 file hash does not match locally vs when copied to the RAID array.…
Exocomp
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RAID 10 - 2 Disk Failure, how to know which drives are mirrored and if data is safe?

The server is currently experiencing a 2 disk failure and was looking for a way to know if my data is lost or not. I tried searching everyone but I didn't find an answer (I'm sorry - new to this). I ran (cat /proc/mdstat): Personalities : [raid10]…
Mohamed Ebrahim
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