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Questions tagged [raid]

RAID, an acronym originally for Redundant Array of Inexpensive Disks (today usually interpreted as referred to as Redundant Array of Independent Disks), is a technology that provides increased storage performance and reliability through redundancy by spreading data across multiple disks using various algorithms (RAID-levels). RAID can be implemented in hardware storage controllers, or in software, usually as operating system/kernel features.

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Drive reports as failed when attempting to assemble a RAID array created on another machine

I'm working on a script to automate the process of creating a RAID array and am currently trying to figure out how to get multiple machines to recognize the array so the data can be transferred after collection. The ultimate goal is to use a set of…
Darin Beaudreau
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Resize partition using parted

There is a pretty big file-server(~85TB) running xfs file system, on Centos 6.9 which we use for our backups. We were out of space, so I added 10 new similar drives to the array and rebuilt RAID 6 using Mega Raid Manager, which took nearly a…
user8802482
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Can we add more volumes/disks to an existing mounted ext3/ext4 mountpoint?

Have a quick question on adding space via a new disk/block device to a non-root/ext3 mount-point that has data and is mounted. I Have an ext3 mountpoint '/u01', which has a device '/dev/sdb' attached. [root@vm2 ~]# findmnt -l /u01 TARGET SOURCE …
n23n23
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How can get RAID bus ID by label?

I have some problem of identify RAID adapter in Centos 6.5 I have some LSI RAID adapters in one server. For any RAID adapters I cat get bus id by lspci. Also I have list of block devs (for example /dev/sd[b,c,d,f]). How I can identify for specified…
Black S.
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RAID Arrays are not assembeling after 2nd reboot

I have an issue where i assemble RAID0 over RAID6 via mdadm as normally, after that i can create file system and mount newly made RAID60 arrays no problem. I update my mdadm.conf, update initramfs an check /proc/mdstat just to be sure. After reboot,…
J B
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RAID - Totally replace an old, semi-dying disk, or add another and wait for it to die completely?

I've currently got a 3 Hard Disk Linux Software RAID5 volume (mdadm). At least one disk is probably dying - long spin up times, and I've heard the click of death coming for a little while. I've purchased a brand new disk, but while the old disk…
xconspirisist
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Raid 0 disk outside

by mistake I run a fdisk /dev/sdb and then w to a raid 0 member, I see a message like the disk is now outside the raid but I ignored that and keep working on the machine. Then I make a reboot and pfff no system. I booted the machine from a USB and…
mijailr
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How to add disks to existing RAID-6

I'd like to double the size of an existing RAID-6. It currently contains 12 disks and I added 12 more. When I go through the IDRAC interface, I can only see options to add them as global hotspare. I thought I could just add the disks to the array…
dargaud
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Bandwidth and IO issues when running hardware raid and zfs

I've inherited a setup using Linux Ubuntu 14, a megaraid_sas, and ZFS. We're getting some performance problems (never being able to fully utilize the 6GB bandwidth from the raid) and I'm curious if it's related to the ZFS setup - which seems a…
BurningKrome
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How do I get rid of this SATARaid screen on boot?

I have a server with a SuperMicro X8SIL-V motherboard. Here's the manual. Every time it boots, it spends about three minutes at this screen: Sil 3124 SATARaid BIOS Version 6.3.18 Copyright (C) 1997-2006 Silicon Image, Inc. Press (Ctrl+S) or F4 to…
Dusda
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Is there a way to add a new drive to the windows software raid 5 volume?

Possible Duplicate: Expand Windows Server 2008 RAID 5 array Hello there! Is there any way to extend my Windows Server 2008 R2 software RAID5 volume by another drive or am I bound to recreate that volume from scratch? Thanks for your attention.
Artem Tikhomirov
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Failed 2008 server with Raid Controller

I have a customer who called us with a failed server. I believe the issue is either the motherboard or the power supply (This happened after a power outage). The server is an old 2008 server which they do not want to replace. They just want the…
Robert Dickey
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How wide (data + parity) would you go for erasure coded pools / raid 6?

I am currently doing k=8 and m=2 or in other words data = 8 + parity = 2 shards I am using an all hdd ceph cluster. I have thought about going data = 11 + parity = 2 which would save a lot of data. Theoretically, you can keep on going up but what…
Vish
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NVME vs SSD: Read/Write performance issue

We have rent some servers from Hetzner.de. A few of them have NVMe hard disks while the others have SSDs. We becnchmarked the read/write performance on 4 of our servers using the following commands: fio dd hdparm The operating system is CentOS7 and…
Sinai
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Recover from a clean, degraded RAID-5

Good morning all, I have some NAS software which - for the most part - works great, but when something happens to the Hyper-V host it often fails spectacularly. Today is one of those days. I'm not great at under the hood stuff but have Google'd…
Graham J
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