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Questions tagged [raid0]

RAID 0 or Striped Set splits data across two or more disks, without redundancy.

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I moved a RAID1 disk pair to a new system. It's decided that it is RAID0

I tried to mount and the OS responded that I needed to run xfs_repair. Not knowing that the RAID1 was now seen as RAID0, I kicked it off and it's been running all day. That seemed weird as I had ...
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So...an LSI SAS9211-8I, ARECA AR-1882IX-12 and some 12TB Hitachis walk into a bar

By the title of this I hope it's obvious that I'm trying to console myself with humor after the idiotic mistake I made last night. And I'm hoping that someone out might be able to verify a few things ...
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How to make one volume with maximal capacity out of the two disks in a 2-bay NAS without striping

I have a Synology NAS with two disks which I want to combine to one large volume for backing up an other system. I don't need redundancy, so something like RAID 0 would do. However I don't need the ...
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Is the sum of IOPS for individual physical disks not equal to the raid0 logical disk?

I have a raid0 set up consisting of 2 physical disks: bash-4.2$ lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT xvda 202:0 0 100G 0 disk `-xvda1 202:1 0 100G 0 part / nvme0n1 259:...
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-1 votes
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Can RAID 5 be made, when one or more of the disk is actually RAID 0?

I have this question since (I think) 3 years ago, but since I was never actually planning to build server, I just shrug it off. But tonight, I literally can't sleep because of this burning question. ...
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How to change size of RAID0 software array by resizing partition?

I've RAID 0 built with mdadm on two disk partition on two separate disks. Is it possible to resize (enlarge) this array by resizing the underlying partition, i.e. do something like stop array->...
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High iowait with RAID0. CPU 100%. Static data is not cached in RAM

I ask for your help. I myself can no longer see the way out. I have a server 1x Xeon E-2236 32RAM 4 x 10TB disks (WDC WD101KRYZ-01) - collected in RAID-0. The disks are fast. Each individually ...
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Convert single-drive BTRFS with LUKS to raid0 using new drive

I have a single drive with BTRFS in a LUKS container. It contains /boot and all the standard btrfs subvolumes. I have a second drive I would like to add while at the same time combining drive1 and the ...
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How do I maximize nvme raid0(md) performance (in linux)?

Nvme raid0 read(and write) performance is sometimes worse than the performance of one individual underlying drive. hdparm -t /dev/md0 : Timing buffered disk reads: 7054 MB in 3.00 seconds = ...
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Dell Poweredge 710 Server amber flashing light

I have Dell PowerEdge R710 with PERC 6i and I am trying to install HP 512 HB SSD in RAID 0 and for some reason, it is constantly blinking flashing amber instead of green. I am running Hyper-V on ...
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mix SAS and SATA HDDs in RAID 0

Specs for some RAID controllers (for instance LSI 9261-8i) say that it's possible to mix SAS and SATA disks in the same RAID array but such practice is discouraged (but without explanations why). ...
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desperate attempt to head off RAID 0 failure, can i copy a disk with dd?

A colleague has been using a 10TB RAID 0 array to edit a film. He suddenly realized it's 98% full. The array has started seriously acting up, but cooperates grudgingly if you shut down all processes ...
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2 disk raid0, move all data to one disk, so the other can be removed

I have a raid0 md disk made up of 2 equalized disks. I would like to remove & replace one of the disks (with a disk of the same capacity), without losing any data. Since the md filesystem is only ...
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-1 votes
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Lsi MegaRaid sas 9271-8i raid-0 crash

I have 8 hhd , all of it have RAID-0. Yesterday one disk change status to configurate good, it's disk with OS. And now I can't start my server , import foreign configuration not work, and I can not ...
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1 answer
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Few questions about creating RAID0 with LVM

I'm little confused, because I found two different instructions about creating RAID0 with LVM. First resource shows way of creating RAID0 wit this pattern: lvcreate -i[num drives] -I[strip size] -...
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3 answers
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ZFS on top of a bunch of Raid0 (1 disk) volumes with battery backed write-cache

I'm reinstalling a workstation (not a headless server) with an Intel RAID card with BBU and 4GB internal cache. My current setup uses ZFS on a pair of mechanical disks and a partition on an SSD for ...
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What is the risk of RAID 0 for a *single* disk versus no RAID on that disk?

I have a server that I'm having trouble with getting the drive to show up without using RAID. However, that's different question. This question is about the problems running a RAID 0 on a root drive ...
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3 votes
1 answer
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Drive allocation in a RAID 50 array on a HPE DL380 G9

I have a DL380 G9 with 12x8TB 3.5" disks: | 1 | 4 | 7 | 10 | | 2 | 5 | 8 | 11 | | 3 | 6 | 9 | 12 | In the Smart Array Controller GUI, if I select all 12 disks and assign them to a RAID 50 array, how ...
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Debian10 , RAID : did it changed since Debian9?

I'm installing a backup server with a Debian10 installed and running on its NVMe disks. It also has 4x6TB SATA hard drives, and I'm trying to set these up as a RAID0 array. I'm usually following the ...
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Linux RAID0 creation with existing data disk and an empty disk

I have a CentOS 7.7 server which has a vhd /dev/sdc mounted (format-type= btrfs); it contains data. I attached a empty vhd to the VM, /dev/sdd (I didn't partition this disk using fdisk) lsblk ...
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Ubuntu GRUB installation failed

I am currently in the process of setting up an Ubuntu server but I ran into a few problems... after setting up RAID 0 (two 160GB drives) I tried to install Ubuntu server 18.04.3 LTS but it failed ...
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Ubuntu Not Starting Second RAID Array

Before I start let me say that I am by no means an expert with this stuff, if you see something that you would have done differently let me know. Ok, so I have a Ubuntu 18.04 server with a boot drive ...
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How to setup bootable RAID 0 on remote server

I have a remote server with 2 identical 500Gb SSD, sda and sdb. A rescue mode is also available from the cloud provider's interface. How to get Debian installed on a bootable RAID 0? I understand I ...
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SSD NVME RAID0 MDADM

My goal is to obtain good writing performances on SSD NVME Disks (benchmarking tools seem to give performances in specific optimized context but far from what we can obtained in real life) My server:...
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Adapted ASR-6405E controller losses raid array0 array

I've goit a Dell R200 server with an adaptec ASR-6405E RAID controller and 2 WD red 4TB drives in a raid-0 array. The harddisks replaced 2 Seagate 3TB drives 2 years ago because of the same issue. ...
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RAID0 mount fault: how to restore/recover data (disks do not seems faulty, superblock issue)

This morning, when I arrived at work I found my calculation server was not responding: I ran some calcultations this week-end on it and this morning it did not want to respond. Screens stayed off and ...
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4 votes
1 answer
3k views

BTRFS single data FS still striped?

UPDATE So after a long time of research in the official documentation, I found out that btrfs allocates space in chunks each 1Gb and when using single mode, these chunks are allocated on the disk ...
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1 vote
1 answer
435 views

JBOD (spanned volume) on top of RAID 0 in Windows Server

I currently have a Windows Server 2008 R2 setup with a RAID 0 drive (2x2TB SSD) which is getting out of space. I want to increase de available space adding more drives (probably another 2x2TB SSD) ...
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2 votes
2 answers
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Migrate regular SATA in HP Raid Controller P812 (Linux, DL580 G7)

I am trying to add existing HDD to HP P812 Array Controller. I connected hard disks using mini-sas to SATA cable and configured each of them as logical (RAID 0) volumes individually. They appeared on ...
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1 answer
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RAID10 and RAID0 partitions

Actually I have this kind of configuration: 4 HDDs and 1 SSD linked via SATA 1 SSD (8GB) linked via eSATA RAID 10 of the 4 HDD partitioned as [ / ] and [ swap ] SSD1 as [ /boot] SSD as [swap] Now ...
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2 votes
1 answer
253 views

Transfer Speed Sudden Drop on Intel Raid Card between (2) 4 SSD Raid 0 Arrays

Preface; I have done hours of trouble shooting on this issue and simply cannot find out what the sudden "bottleneck" is. I have (2) 4 SSD Disk Raid 0 Arrays (3.8TB Each). They are run off a single ...
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1 vote
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Elasticsearch: fine-tuning for RAID0 HDD array storage

It is usually recommended to have the following index settings in case spinning disks are used for Elasticsearch data storage: index.store.throttle.type: none index.merge.scheduler.max_thread_count: ...
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1 vote
1 answer
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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 ...
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-3 votes
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Windows 10 Installation Failure New Server [closed]

Bought a Brand New Server with windows 10 installed. The initial boot up was fine. Added a new hard drive and put the system in a raid 0 setup. Ran the install CD, installation went fine. On ...
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HP Microserver Gen8 RAID0 rebuild loss data

I have 2 WD HDD on gen8 and built as RAID0 on slot1 and slot2, and I have unplugged this two disk and install seagate disk on slot 1 and slot 2. and SmartArray report there are no raid found. then I ...
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-1 votes
2 answers
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Install Windows Server 2012 on separate disk or in RAID 5?

I have a RAID controller with 4 1TB disks and first I put them all in a RAID 5 array, partitioned 1TB for OS and 2TB for data. Then I noticed that the raid array was never idle. It was constantly ...
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-2 votes
2 answers
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Ubuntu 16.04 with software RAID 1 questions

I've purchased a new dedicated server with 2 x 240GB SSD drive, and installed Ubuntu 16.04 image from the provider's control panel which by default creates the software RAID 1. I also installed ...
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2 answers
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lsi megaraid 9260 single raid0 disk went unconfigured bad, please help recover data

I had some problem with my server with lsi megaraid 9260 chip(no JBOD support). I cannot recall exactly but I think I had a single drive as r0, and it failed. I need to recover data from it, if ...
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0 votes
1 answer
194 views

Drop in write performance when mirroring two RAID 0 arrays

On a CentOS 7 server with 4 SSDs, I created two RAID 0 arrays with mdadm. Both were formatted with ext4 and mounted on separate directories. I benchmarked them using fio and got the following results ...
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Windows Striped Vs Single Hard Drive

I do video production and thus have a lot of large files. I ran out of room on my 4tb storage drive so I bought two 5tb WD Black drives. I installed them and set it up as a windows striped volume. ...
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SSD + HDD RAID 0 Performance? [closed]

the purpose is to get the max space and the best performance is it possible to merge two drives one is hdd and the other is ssd into one partition using raid 0 ? and do it provide good ...
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3 votes
3 answers
6k views

mdadm not assemble after restart

I have 2 disk with the next structure: lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 3,7T 0 disk ├─sda1 8:1 0 2,7T 0 part └─sda2 8:2 0 931,5G ...
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32 votes
6 answers
5k views

Why is RAID 0 classed as RAID when it's not redundant?

I've worked in IT quite a number of years, so I know what a RAID array is, what RAID 0 is, RAID 1, 5, 6, 10, 50, 60, etc., but something sprung to mind in a recent conversation at work; if ...
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0 votes
2 answers
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Does data get bottlenecked when copying from one server to another when the two servers have different RAID configurations?

Suppose Server 1 is configured with 8 1TB disks in RAID 5. Server 2 is configured with 8 1TB disks in RAID 0. There is a link between the two servers but for the purpose of this question, lets suppose ...
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2 votes
1 answer
7k views

Linux- Convert 2 disk raid1 to raid0

I have a linux server (3.19.0) which has raid setup with md (v3.2.5). / is a raid1 device with 2 disks. There was a mistake when installing this machine, instead we need those 2 disks to be in raid0 ...
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2 votes
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How to recover an Intel RAID 0 on a Rocks cluster distribution

We had a Rocks 5.5 distribution on our cluster and wanted to upgrade to 6.2. The "/export" partition was mounted on a Intel software RAID 0 array of 2 identical hard drives (HD) (/dev/sdb and /dev/sdc)...
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Slow read speed. Raid 10 + H700 (1GB RAM + battery) + 4x 450 Hitachi 15K

So I have installed 4x 450GB Hitachi 15K in Raid 10 (Dell T610 + H700 + mem + battery). I have very simple issue. Read speed is terrible, I have also installed Raid 0 (2x 3TB WD Red) and speeds are ...
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Recover data from 1 disk after broken raid 5

in a bit of an emergency. I am taking control of some servers that someone else had setup. One of them has crashed and it was critical. Here is what I found: The server (Dell r710) was operating with ...
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2 answers
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Will lvm raid0 lose data after linux system crash?

We want to use lvm to build raid0 array using amazon ebs, and we are worrying about the data safety. We have known that we need to halt the vm to backup. But we still want to know what will happen ...
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3 votes
1 answer
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Rotate entire disk set in RAID0 array?

We have a Lenovo RD430 with a RAID 500 controller. Installed in the server are 6x 4TB drives configured as 2x RAID0 arrays of 3x 4TB each, however, we also have another 3x identical 4TB drives and ...
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