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.
Questions tagged [raid]
3585 questions
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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 Jordan
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Intel Optane 900P SSD - Windows Raid
Currently am trying to upgrade an iSCSI shared storage server for a SQL Server cluster (server is running Windows Server 2012, I plan on upgrading that at a later time). After looking at where to get big wins in hardware I was excited to see the…
Jarrod Christman
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