Questions tagged [raid0]

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

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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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3answers
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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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1answer
120 views

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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1answer
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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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1answer
101 views

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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2answers
430 views

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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1answer
61 views

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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1answer
773 views

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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1answer
514 views

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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1answer
1k 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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1answer
321 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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2answers
219 views

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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1answer
37 views

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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1answer
138 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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0answers
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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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1answer
1k views

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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1answer
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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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1answer
551 views

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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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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398 views

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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2answers
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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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112 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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1answer
134 views

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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1answer
1k views

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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3answers
4k 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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6answers
4k 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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41 views

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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1answer
5k 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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0answers
252 views

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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1answer
2k views

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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1answer
300 views

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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2answers
79 views

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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1answer
417 views

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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3answers
998 views

PERC H310 Raid 5 - Fault - Turn array into RAID 0

Yesterday one of the three Raid 5 disks I have configured into my DELL Server PERC H310 controller cannot be found anymore. I cannot replace the faulty driver now, so the thing I actually would like ...
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2answers
23k views

Trouble Installing Windows Server 2008 R2 on a Dell PowerEdge R220

I'm trying to install Windows Server 2008 R2 64-bit for the first time in a Dell PowerEdge R220, using UEFI. At first the installation wouldn't see any disks. Then, I found this: Trouble Installing ...
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mdadm: add new device failed for /dev/xvdl as 2: Invalid argument

I have existing RAID0 setup with two disks. I have to add a new drive to it. But when I try to run the following command: mdadm --add /dev/md/customer_upload /dev/xvdl I get an error: mdadm: add ...
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2answers
3k views

HP G8 migrate RAID0 to RAID1 with CLI commands

This is a Dynamic Smart Array B120i. The SSA (Smart Storage Administrator) is ver 1.50.4.0 The OS was installed into a single hard disc (bay 1), the SSA reports like RAID 0. Then I add a new hard disc ...
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178 views

RAID0 : best chunk size for fileserver with average 650KB files

I found out that my server(linux Ubuntu Server 14.04) has probably a to high chunk size for the RAID0, or atleast I think this is an performance issue... The current chunk size is 512K with 4 disk of ...
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2answers
1k views

LSI MegaRaid - Image Drive from Failed RAID

I had a power failure and my LSI MegaRaid 3 disk SAS RAID 0 failed. My attempts to recover the RAID have also failed. I plan to rebuild the array and go with RAID 5 and add another SAS disk. ...
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1answer
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What to do when raid 0 errer: Following Arrays have missing required members and cannot be … Array#0-RAID-0 [closed]

here are the tried status: It is a raid 0 configuration and have 2 disks. When using IBM ServeRAID Configuration Utility, there are three options: 1. Array Configuration Utility : see below 2. ...
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3answers
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mdadm - Remove disk from RAID0

So, I'd like to know, is is possible to do the following with mdadm: I start with RAID0 configuration on 2 disks: sda and sdb. I would like to add one more disk to array, sdc and move all data from ...
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1answer
2k views

DELL FS12-SC PERC 6/i replacement with JBOD support? [closed]

I have 3 DELL FS12-SC servers with a bunch of 3TB drives (issue number 1, the perc 6/i doesn't appear to support 3TB drives). I'm setting up a ceph cluster and need to run the drives in JBOD mode. The ...
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2answers
1k views

Check badblocks on RAID-0

Without RAID-0, I usually check bad sectors using this command: fsck -yvckfC -E fragcheck /dev/sdX How to check bad sectors when the harddisk was using RAID-0? should I run it for each drive? /dev/...
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2answers
3k views

Is it possible to enable RAID 1 on an already in-use HP Proliant DL380 G5

I have a HP Proliant DL380 G5 with two HDDs in RAID 0 (Stripe)(72GB+72GB). It has been running Windows Server for quite a while now and has 30GB of occupied space on a stripted volume. I've now ...
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1answer
962 views

Upgrade to 3x Samsung SSD EVO in RAID-0 — what type of RAID controller to search for? [closed]

My current configuration is a RAID-0 with three conventional 2TB hard drives. I want to upgrade to three 1TB SSD EVO disks, also in a RAID-0 configuration. Using SiSoftware Sandra, I found out that ...
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1answer
49 views

linux raid0 array size

I made linux raid0 with 4 disks (1TB each). mdadm --misc --detail /dev/md0 shows Array Size to be 4TB. But when I mount this shared folder in a windows PC, it says that it has 105 GB size. How can I ...
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0answers
104 views

Why are bad superblocks happening

I have Dell MD1000 storage that has 3x 2TB sata hdds (RAID 0, will move to RAID 6 soon) and 90% of time I am reading from it 40-60MBps via webserver. When I want to restart machine I simply stop ...