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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Upgrade from SATA to SAS: Expected speedup?
My current setup is this:
Megaraid 9361-16i
12 x 12 TB SATA disks WD DC HC520
Connected to the controller via 3 of the 4 SAS ports
Configured either Raid-10 or Raid-6 without spares. Raid-6 in write-...
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HP DL385p G8 p420i not detecting additional drives
I have a dl385 g8 with the p420i radi controller. I went through a lot of steps upgrading the server firmware to the latest, rapid controller and iLo. After a lot of work I was able to boot the the ...
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Dell PERC H710 Mini: missing volume; drives now show as unconfigured
After power-cycling a Dell R720 with PERC H710 Mini RAID controller, it lost one of 2 RAID volumes I had configured. The RAID configuration utility now shows the drives as "unconfigured", ...
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RAID how to clone?
We had a server with 2 disks in RAID
But it is not work anymore
one disk died, now we need to recover data from a live disk.
The disks were 1 TB each, when opening acronis image backup
The disk size ...
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Disk pair not usable after moving from hardware RAID (Windows) to software RAID (Linux)
A long time ago I created a RAID1 pair from the boot menu of a JMicron JMB363 card. All was working fine under Windows and the RAID1 array was recognized as a single disk. I don't remember exactly how ...
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Two LSI-controllers in one host
I have a machine (Supermicro X11SPL-F, Xeon Gold 6210U) with a Megaraid/LSI 9361 RAID-controller. Two volumes, RAID 1 and 6. VMWare ESX 8 on RAID 1. Everthing is working fine.
When I add a second ...
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Repair hardware RAID 50 with two failing drives Poweredge R720xd
I have a Poweredge R720xd with a PERC H710 Mini controller that is hosting a 8-disk RAID 50 array. I have a situation where two drives are marked as 'predictive failure'. One of the affected drives ...
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RAID + LUKS + LVM + BCACHE + BTRFS
I want build new structure for my data store (NAS - Ubuntu). Data storage will be 4TB at first. Then up to 8TB.
My old structure is simple:
RAID 1 -> LUKS -> FS
I need some wishes to new ...
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Adaptec ASR-6805T can create raid from ssd only?
I'm about to move my Proxmox home server from NAS to RAID 10. I'm a hardware RAID fan, so I chose a solution among inexpensive old controllers. In the course of studying budget solutions for the home, ...
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Is Software RAID1 faster on a larger SSD?
I am evaluating 2 CentOS servers, in terms of performance of reading and writing to the database. The database sits on an SSD RAID1 pair, with MySQL 5.7 on each server. Server 2's specs are a bit ...
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Rainmeter doesn't show disk performance for disk arrays, but performance monitor does
RainMeter is making me scratch my head. My understanding is that to make any kind of meter for any purpose, one needs to use the same Category/Counter as are selectable in Performance Meter (perfmon)
...
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Penguin server won't boot after swapping failed hard drive in RAID 6
So I have a Penguin Relion 1900 1U rack mounted server running CentOS 7 that recently had a hard disk failure. It had 4 hard drives configured in RAID 6. To replace the failed HDD, I powered off the ...
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Why is existing RAID1 boot array not working in new PC
This question maybe related to this: https://askubuntu.com/questions/1347710/disappeared-raid-1-array-after-replacing-motherboard
I created a software RAID1 array with 2 SSDs on an HP Z800 and ...
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Transferring RAID1 to a new motherboard after HDD failure, and no "Superblock" found
First an OS SDD failure followed by a mobo failure, new mobo/cpu/ram later, and I have a RAID1 with a single working disk, and I am trying to get it remounted so that I can add in a new replacement ...
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Extend RAID volume size with storcli
I have RAID1 on 2*240GB HDD , witch i changed with 480GB SSD's.
I changed disk 1 , wait for RAID to rebuild, and then change the other. Now I have 240GB RAID over 480GB disks, and cant find a way to ...
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Raid6 mdadm reshape operation interrupted - now cannot mount or examine
Edit: Once the reshape finished the drive became fully accessible again.
I had a power failure while a raid6 array was being reshaped, and now certain operations cannot be run against it, including ...
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Can i convert RAID 5 to RAID 0 on HPE?
I have RAID5 with 4 disks on HPE dl380p with p420i controller.
now i need to convert it to RAID0.
conversion from RAIOD0 to RAID5 without reboot was simple.
ssacli ctrl slot=0 ld 1 modify raid=5
but ...
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RAID6 REBUILD - Virtual Drive not importable
Good morning,
Last week, the heatsink of our LSI9271-8i Raid card dropped off from the card and the card is dead. It is an 8 disk x 10TB (Slot7 is hot spare) RAID6.
Well, we have another LSI9271-8i, ...
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Can't connect to other volumes (Dell Equal Logic SAN Headquarters)
Investigating an older server and disk array (Dell EqualLogic PS4100). The server has Dell EqualLogic SAN Headquarters onit. In Group Manager on the server I can see 5 out of 7 volumes as online/...
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RAID Disk shows foreign status after being removed and inserted into the wrong slot
First of all forgive me that my understanding of Dell RAID system is limited. I have a dell PowerEdge server with PREC H330 Mini controller with 6 of the 8 slot having a physical drive (each 2.182TB) ...
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How to set "mode" in mdadm
Want to "activate" RAID5 spare by using spare-devices=0
nov25-1@nov251-desktop:~$ sudo mdadm --detail /dev/md122 --spare-devices=0
getting this response:
mdadm: :option --spare-devices not ...
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Server Drive issue
My server was not working at all since yesterday, when DC intervention complete they told that one of the drive is defected.
I am using 4x 2To HDD SATA Soft RAID
After they checked and online the ...
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Disk performance issues exclusively with RAID 10 (LVM RAID)
For some reason, I am suffering very poor disk performance on RAID 10, but normal performance on RAID 5.
For context, I have 4 x 1 TB hard drives in a server. They are the physical volumes within the ...
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Diagnosing **very** slow write speed on RAID / Fedora 14
We have a Dell PowerEdge T110 running Fedora 14 which operates as our build server for Embedded Linux and as our Subversion server.
Recently it has become very slow, failing to complete nightly ...
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mdadm resync slows down to 0K/s over time
I have a problem with resyncing my raid1. Everything worked fine until now and I don't know what the problem is.
When I reboot my machine the speed of the resync is at about 100000K/sec but over the ...
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storcli: A proper way to replace a drive in RAID0 or How to migrate virtual drive WITH data loss?
I have a RAID0 where I need to replace a drive and can lose the data. In order to replace it, I do:
storcli64 /c0/e1/sX set offline
storcli64 /c0/e1/sX set missing
storcli64 /c0/e1/sX spindown
then ...
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recovering raid5 from 3 working drives, one has a read error
i had 4 drives, lost one drive before, and now another drive was reported by the qnap web gui as having a read error (i did a bad block scan).
now i want to insert a new drive, in the lost drive's ...
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System failure shortly after md raid growth and no md superblocks on added disks
tl;dr; I tried to grow my raid array by adding 2 10 tb disks to an exsistant 4x4TB raid 5 array, had a failure with the system disk (not part of the raid) shortly after the growth finished and after ...
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Recovering RAID5 - using Linux "mdadm"
Using Linux mdadm to recover from failed disk / partition.
Here are titles of the steps I took so far - I can post detailed copy if it helps.
( I am not sure how to post file link here...)
The last ...
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How to create RAID5 with existing data? EFDITED [closed]
Here is the original post
There is very ancient post on this forum about adding / creating new RAID5 using EXISTING data on non RAID5 partition. I ASSUME the discussion was pertaining to HARDWARE ...
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Is there a way to add a drive which has a mismatched txg in a ZFS zpool?
I've got a raidz2 that should be finding one more drive, that is physically there, only its txg # is out of sync, so I think that is causing it not to be added. (Disk 4 did indeed fail and is missing)....
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Flash Crucial SSD firmware through PERC 730P Mini RAID controller
We've got a number of Crucial drives in Dell r630 servers with PERC 730P Mini RAID controllers that need their firmware updating as they're still on version M3CR032 with the known issues.
The servers ...
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dell R730xd disk size less then total disk size after raid 0
On my R730xd, I have 6x1TB and 20x 300GB HDDs. That should give me about 12TB. But after I do the raid setup I am left with a 6.8 TB disk? I am doing raid 0 because I don't plan on storing anything ...
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Linux - RAM Disk as part of a Mirrored Logical Volume
We have a server with 64GB of total RAM, applications are using typically a maximum of 30GB of that available RAM. One of those applications deals with a lot of flat files, and we're having throughput ...
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LSI Storage Authority (Windows) losing registered ESXI after reboot
I have an issue with the RAID Monitoring Software LSA for Windows (LSI Storage Authority).
I can add an ESXI manually and manage/monitor the RAID controller fine, but as soon as im rebooting the ...
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Removed failed disk from
I have a problem with a software raid running mirror. One disk is dead and the server cannot find it. Normally I would have removed it as well.
mdadm --manage /dev/md0 --remove /dev/sda1
But after it ...
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HP Raid Controller p420i 18TB disk support on DL380 Gen8?
I have some 18TB Seagate Disks on a DL380 Gen8 HP server with p420i raid controller, with 2GB cache module.
I have created a RAID5 with 16TB disks but with 18TB disks, all disks are recognized but ...
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Which RAID is best for private use of NAS [closed]
I want to buy the DS 920+ with (4x)6TB Seagate IronWolf NAS HDD.
I definitely want some reliability. I obviously don't want to lose any data which is stored on the NAS.
Which RAID would be the best?
I ...
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Shrink one of the disks in a multi device BTRFS filesystem
My root partition is running out of space and I have no other SATA slots. I have a BTRFS raid0 and I would like to shrink one of the partitions I used for the BTRFS-raid0 and add it to the root ...
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Running xfs_repair on hardware raid while still rebuilding?
Should I allow a hardware raid5 array rebuild to complete after swapping out a drive PRIOR to running an xfs_repair on the volume?
Currently xfs_repair keeps failing in Phase 7 at the same spot:
Phase ...
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Debian 10, very slow disk i/o, related to software raid
Hey got a server here that's gotten very slow on disk i/o, mdstat mentions something about a check, but I can't find anything about that when googling for it. What is it doing here?
root@tynix /home/...
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mdadm array state not fully active - faulty device
I use 4 drives as a raid 5 on my Raspberry Pi. I shutdown my Pi every night and start the next morning. Sometimes the array appears to be faulty. Maybe the Pi doesn't properly mounts the drives ...
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Can I make hotremove/add on raid5 with mdadm?
I created and assembled software RAID5 array (mdadm), 15 SSD disks.
If I physically remove several disks and add them back, RAID doesn't assembles back. Disks stays in "spare" mode. Even ...
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mdadm RAID10 disks layout
I've been trying to understand how disks are distributed in a mdadm RAID10, but i'm not completly sure. AFAIK, a native RAID10 is similar to RAID0+RAID1, i.e. data splitted in two chunks, each one ...
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LVM "not starting" after upgrading physical disks in underlying RAID6 mdadm array
Before:
separate SSD boot drive
RAID6 4 x 2TB -> /dev/md0
LVM PV /dev/md0
LVM VG built on the PV above
LVM 2 data partitions formed in the VG
mounted at /home and /mnt/data
I upgraded from ...
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Poweredge R720 - Unrecoverable Medium Error on boot
I am running Ubuntu 22.04 on a Poweredge R720 using a hardware RAID 5 array.
Earlier today the server experienced an unexpected power cut, and upon rebooting I was met with an "unrecoverable ...
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HDD vs SSD for mongodb database server
I am setting up a physical server for an application that we have developed, the purpose of this server is to run the server's own software and store its database (mongodb).
On the server machine we ...
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Added wrong drive to raid1 via mdadm, partition recovery
My raid is functioning fine, but I accidentally added a USB drive to what is a sata RAID1 with mdadm.
I noticed this pretty quickly and removed the drive from raid, it was synced about half a percent. ...
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Want OS on HDD outside of Hardware Raid
I Work for a tech company. They got rid of some outdated hardware and I ended up with a couple old HP Z800s.
one of those has an HP PN XP310AA which is an HP LSI 9212 4-Port SAS 6 Gb/s Internal RAID ...
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How do I mount a BTRFS filesystem where both devices have the CHANGING_FSID flag and one devices has journal errors?
I have a RAID-1 BTRFS setup with two 8 TB hard drives. Due to unclean reboots, I cannot mount them anymore, even with recovery flags:
rockpro64:~:# mount -t btrfs -o rootflags=recovery,nospace_cache /...
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