Questions tagged [raid10]

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

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mdadm raid10 recovery after failed reshape

I had raid1 and tried top convert it to raid10 with 6 drive. I coverted it to raid0 then to raid10 with 4 disks. After reshaping was done i added other 2 disks and fs crashed and i assumed that reboot ...
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Expand existing RAID1 zpool into RAID10 zpool

I'd like to expand/convert my existing RAID1 (2x 3TB mirror) zpool to RAID10 zpool by adding 2 more 3TB HDDs without losing (or moving) data stored on my existing pool. The final result will look ...
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LSI HostRAID 2008 - Can't Create RAID 10 With More Than 10 Drives

I've got a Quanta Stratos server with an LSI HostRaid 2008 controller. I've got 24 SAS drives in it. No matter what I do I cannot get configure RAID 10 across all 24 drives. I've no experience with ...
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Very Low IOPs on Array of 16x 15K SAS Drives

I'm having issues with one of our servers that is running 16x 900GB 15K SAS drives in a RAID 1+0 Array on a PERC H710P, under normal load its doing ~450 IOPs (almost all writes) and has a backlog of ~...
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Rebuild Linux Software Raid 10 Adding Replacement Disk

I have a CentOS 6.10 Server with 4 x 2TB Drives. One was failing (bad sectors and causing major disk IO bottlenecks). This is a headless server in a remote data center. Technician is going to replace ...
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Storcli - migrate from RAID1 to RAID10

I have a system with two hard drives set up in RAID1. I've purchased another two - same model/size etc. - and now I want to reconfigure them to RAID10. I have storcli installed in VMWare and is ...
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RAID - What happens if I import foreign configuration from newly inserted disk into an exisitng raid

Does the existing RAID fail if I import the foreign configuration from newly insert disk? Say I have a RAID 10 with 4 drives and I insert the 5th drive and its in Foreign state. Does it destroy my ...
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Raid Status - Online vs Ready vs Foreign

What does Raid state Online, Ready or Foreign means? What other state can it be? What needs to be done in such state? I think Online is the only safe state. What are the DO's and Don't during ...
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RAID 50 vs RAID 10 for performance?

I have a server with 6 SSD's and a raid controller card that supports both RAID 10 and RAID 50 the plan is to use this as our Build server. It will be pulling in NPM Packages and many small code files,...
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What a benefit of RAID 1,5,10 vs every night simple diff backup

Given: 2 HDD in RAID and case when we lose 1 of them after 3 years: If we use RAID 0, we lost data If we use RAID 1, we have a copy on possible also bad-health disk, any restore may cause failure ...
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Hardware Raid 1 vs Raid 10

What are the advantages/disadvantages of raid 1+0 vs raid 1 regarding the following: Recoverability. How easy is it to recover data from a raid 1+0 array if the raid array controller fails and you ...
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HP ProLiant ML110 G7 Difficulty Loading OpenSUSE Leap [closed]

I am having a problem with the HP Proliant ML110 G7. I am trying to load OPenSUSE Leap. I go through the whole installation. It is supposed to detect and load all drivers required. The ML100 G7 has ...
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Compare disk performance between machines that built from RAID10

we have kafka cluster with 10 machines each kafka have RAID10 configuration , RAID10 is built from 22 disks so from kafka linux side we can see only sdb by lsblk that built from 22 disks now we ...
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RAID 10 Single drive is showing up as multiple drives in Windows Server 2016

I installed a Windows Server 2016 in a physical server with RAID 10 (LSI card), whose configuration is shown below: Even though the RAID configuration shows one 3.725 TB drive, this shows up as 2 ...
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How to force spare disk activation on HP Storage Administrator? (Spare did not activate)

I have a HP Storage Adminstrator on a machine, B120i controller. The drive failed today, and the spare did not activate. It is set to Predictive mode - how can I force it replace the failed drive?
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Backup volume and Data on the same raid array?

I have to setup a server with three VMs. It must also act as first backup storage location. The server is equipped with 8x1,8TB HDDs. I'm not sure if it's a good choice to have one big raid10 with ...
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379 views

Adding disks to existing RAID array

We want to increase disk space of one of our server. Currently it has 8 physical disks(4 x 480 GB, 4 x 1.9 TB) and 3 virtual disks(RAID 1 (2 x 480GB), RAID 1 (2 x 480 GB), RAID 10(4 x 1.9TB)). We want ...
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6 Samsung 860 EVO SSDs running RAID-10 with an LSI-9260 controller TBW

I am getting ready to implement a RAID-10 config with 6 Samsung 860 EVO 500gb SSDs. They will be attached to an LSI 9260-8i controller. The specs for the SSDs lifespan read 300TBW. Q1 - Can ...
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New RAID10 4x 12TB array, long resync time

I just got a CENTOS new machine setup. It has 2x SSD drives for linux, and 4x 12TB SAS drives for extra storage. I setup a software RAID10 array on the 4x 12TB drives, file system ext4. Obviously it ...
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ZFS Recover from 2 dead drives on Raidz1-0

I've got a ZFS pool I'm trying to import to a new install, and I have what looks like 2 dead drives out of 4. Considering I have no back up (I know, this array was my backups) is there a chance of ...
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2 Volume RAID 10 on a single RAID controller

Motherboards Supermicro X10DRH-CT Onboard Raid Broadcom Mega Raid SLI 3108, Motherboard has 2 mini SAS port for an other 4 SAS Drives. Question, Can I create Second Raid 10 Volume without interfering ...
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Replace non-existent drive in array with unassigned drive

I have a P420 card in a Gen 8 dl360e server and I've been having some problems with my RAID 10 array. The drive in bay 1 has appeared to fail. I say appeared, because on taking the drive out and ...
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RAID 10 Configured in Smart Array Administrator but after install centos 7 show all disks

I have an HP ProLiant DL320e Gen8 with 4 disks. I have configured the disks as a single RAID10 array in the HP Smart Array Administrator. After configuring Smart Array Administrator I can see 1 ...
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RAID 10 Configuration Settings with different disks

I have just started configuring a server with 4 SSD drives. Each drive pair has the same capacity, but not the same throughout the 4 disks. I want to use RAID 10, and I have tried different ...
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271 views

How to recover from drive failure on lvm software raid 10 in Linux?

Below is how I created lvm software raid10. Create Physical Volumes pvcreate /dev/nvme0n1 /dev/nvme1n1 /dev/nvme2n1 /dev/nvme3n1 Create Volume Group vgcreate my_vol_grp /dev/nvme0n1 /dev/nvme1n1 /...
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388 views

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] [...
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RAID 10 only show half array size

I setup RAID 10 with 4 hdd (4x 2TB), but after raid process I can only see 2TB space. Please advice how to fix regarding space problem? Below result from df -h only show 2TB harddisk rather than 4 TB ...
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517 views

Add btrfs devices to raid1 array, increasing total size

I have a btrfs array comprising of two 2TB disks in raid 1. I am running out of space, and I want to add two 3TB disks that I have lying around. The final setup will be 2x2TB+2x3TB drives. One drive ...
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Online capacity expansion of RAID10 on PERC H830 Unavailable

Per updates notes on Firmware ver 25.3.0.0016 (link), the PERC H830 now supports online capacity expansion (OCE) of RAID10 volumes with less than 32 disks. Our card is at firmware 25.5.x. We have ...
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HP Smart Array P410: Convert RAID10 to RAID1 OR remove disks from RAID10

I have a server with two RAID10 arrays of 146GB disks. I'm trying to replace one RAID10 array of 146GB disks with RAID1 of two 2TB disks. Since there are no free ports, I took out two disks from the ...
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Difference between software and hardware RAID 10 if the server suddenly shut down

today I have a question that I can not answer. Our servers are dual power and battery. The operating system never crashes. (thanks linux) Now, I wonder what happens if the server suddenly shuts down?...
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Marvell 9230 - RAID 10 3 disks suddenly appear as unconfigured

I was rebooting my NAS running Open Media Vault, and noticed that the RAID controller (Marvell 9230) reported degraded RAID operation since one disk wasn't found. I shut down the box to investigate. ...
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Persistent multiple medium errors on LSI RAID array

One of our SuperMicro servers with an onboard LSI 2308 RAID controller has been having issues with our main RAID10 array consisting of 4 Seagate 600 PRO SSD drives (in slots 0,1,2,3). It started with ...
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Extending RAID 10 on MegaRAID

So I had a few servers with 8 drives configured in RAID 10. Four pairs of two drives in the RAID1 level. One of the drives went bad and the RAID controller removed one pair from the set, so it now ...
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HP P410 offline RAID expansion and migration

I have a 2 x 146GB SAS in RAID1. I bought 2 more, same specs drive. I am on a production server. I have a P410 with 512MB cache, but no battery. I can afford a downtime. My questions are: Can I load ...
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RAID 10 with SSDs on LSI 9260-8i has bad performance

I am trying to get a raid 10 running with LSI 9260-8i (IBM M5015) and 4 x Samsung 850 Pro 512GB SSDs. The problem is, that the resulting sequential write performance is really bad (< 100MB/s). ...
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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 ...
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515 views

MegaRAID storage manager update and now tons of media errors

I was just poking around a 5 year old server and noticed the MegaRAID storage manager (14.08.01) appeared to be not responding. The server has been running for something like 400 days without ...
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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] ...
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Is it possible to extract Raid Controller configuration index from on to another?

We have a Fujitsu server with this specific RAID Controller (FUJITSU PRAID EP400i / EP420i). We want to export the configuration of that RAID Controller to a new one, so in case that RAID controller ...
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603 views

3ware 9550SX RAID-10, one degraded drive, rebuild and initialization stuck

Question: Is there a way to force this to rebuild? I'm also toying with the idea of turning the system off and attempting to rebuild it in the 3ware controller BIOS. If I turn this system off in ...
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3k views

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 ...
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Mount a hardware RAID in Ubuntu 16.04 LTS

I added a hardware RAID to my server. It was configured with the LSI-MR9361-8i as a 87TiB RAID 10. sudo fdisk -l returns: Disk /dev/sda: 87.3 TiB, 96009698934784 bytes, 23439867904 sectors Units: ...
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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 ...
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897 views

What are RAID 1/10 mismatch_cnt > 0 causes except for swap file?

Two of four of my servers currently have mismatch_cnt about 40000 and that worries me. We are using RAID10 setup. Manual states, that However on RAID1 and RAID10 it is possible for software issues ...
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330 views

How to fix zpool detach hanging the entire pool?

When trying to replace a disk in a zpool on a FreeBSD 10.3-RELEASE-p20 system yesterday, the zfs filesystems became unresponsive after issuing the zpool detach srv gpt/d0 command. The server acts as ...
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517 views

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 ...
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367 views

Degraded RAID10 Array?

Earlier today I received an automated email from mdadm monitor with the following: This is an automatically generated mail message from mdadm running on server This is an automatically generated ...
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350 views

RAID 6 array much faster than my RAID 10 array?

How come my RAID-6 outperforms my RAID-10? Docker container on Synology with 8x4TB RAID-10: [root@centos Files]# bonnie++ -d /Files/tmp -r 16G -s 32G -n 1 -f -b -u root Using uid:0, gid:0. Writing ...
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514 views

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 ...

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