Questions tagged [raid5]
RAID (redundant array of independent disks, originally redundant array of inexpensive disks[1][2]) is a storage technology that combines multiple disk drive components into a logical unit. Data is distributed across the drives in one of several ways called "RAID levels", depending on what level of redundancy and performance (via parallel communication) is required. RAID 5 is a specific implementation.
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2 Disks Suddenly Showing as Spares on Raid 5 Array
I have a raid5 array in a Seagate Blackarmor 440 nas that suddenly started showing disks 1 and 4 as "failed". I moved all of the drives over to a Ubuntu box and tried to assemble the array ...
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Set my spare disk to be online
How can I set my spare disk to be online? I`ve tried /opt/MegaRAID/storcli/storcli64 /c0/e0/s13 set online, but I got an error 255 Operation not allowed.
Thanks.
>0:13 13 GHS - 3.637 TB SATA ...
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trying to rebuild RAID 5 array with failed drive, `/dev/sdc1 has no superblock - assembly aborted`
I have ~20TB MD array spanned across 5 6TB hard drives. yesterday one of the drives failed and the system stopped booting. I'm not very good at Linux, so whenever this happened in the past, I'd simply ...
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Mdadm only able to assemble some of the drives from hardware array
After using ddrescue to back up the disks of a failing hardware RAID5 array (from a perc h700 controller) to images, and following Nikita's answer to my previous question to create overlays, I ...
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Access data from drive images of raid drives
The drives on a perc h700 controller running RAID5 were experiencing errors, so I copied out the contents to images using ddrescue. All drives had some bad blocks, but most (>99.98%) of the bits ...
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mdadm RAID5 inactive and drive missing
I have a raid5 set up with mdadm and had to replace one broken hard drive.
It worked for a while, but for some reason, became inactive after a couple of weeks.
I'm pretty sure that the missing drive /...
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Replacing a HDD in a RAID 5 after the Hot Spare already rebuilt
(I'll try to be brief on the background) I have 2 RAID 5 arrays using an Adaptec 5405 controller. In the past when a drive failed I was able to swap the drive with a new one and it would rebuild ...
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Silicon Image Raid5 search for data recovery options [closed]
In a HP server with windows 2008-R2. There is a PCI Silicon Image SATA raid controller with 4 SATA disks.
In the controller is a config to make them in a Raid5 config.
Windows is seeing them as 1 ...
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Avago 3108: rebuild degraded hardware RAID5?
Supermicro TwinPro chassis with dual SYS-1029TP-DC1R server modules, each with Supermicro X11DPT-PS motherboard and Avago 3108 RAID card.
OS: VMware ESXi 6.7.
Problem: can't figure out how rebuild an ...
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RAID configuration on new server
I need help with the configuration of RAIDs on the ASUS RS720-E10-RS12 server. We have installed 2x 512GB NVME drives in the motherboard slots and 12x SATA SSDs in the Backplane slots. I can only ...
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mdadm copy superblock from drive to drive
i have an RAID5 consisting of 7 HDDS. One Drive is only partially accessable anymore.
Unfortunatly i used the create command which resetted the superblocks of the 6 healthy drives.
is there a way to ...
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File access on SSD array suddenly slowed down; TRIM appears to be unavailable. How to enable, or what else could it be?
We have a system that's used for a GIS database (with Postgres as the underlying engine) which is using a software RAID 5 array of 4x2TB Samsung EVO870 SATA SSDs as its database drive. There is a ...
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Do I have any chance at a cowboy rebuild of my busted Raid5 Array?
Ok, I'll try to keep this quick. The data on these drives isn't mission-critical so there's no backup. Losing the data would be a bit annoying, so if I could get it back that would be neat, but if not ...
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LSI MegaRAID SAS 3108: Restoring the online state from Foreign Bad (Frn-Bad) state
We have a Virtual Disk in RAID 5 using only 5 disks, one disk probably is broken because it was in an alert before. Another disk was accidentally pulled out and then it was marked as Frn-Bad when it ...
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storcli - remove physical drives from a virtual drive
Using an AVAGO Megaraid controller with the storcli command line software on Ubuntu.
My virtual drive has 8 10TB physical drives in a RAID5. I want to remove 2 of them so I can use those slots for ...
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RAID-5 read speed is very slow
I have windows 11 pro for workstation and use 2 RAID-5 volumes for storage (nvme group and ssd group). The read speed for the nvme group is around 2220 MB/s and the write speed is around 170 MB/s. SSD ...
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Can I build a RAID 5+1 system?
I must say I already found a similar question on this platform, but the context was different, so I'm trying by myself.
My idea is as follows:
I have 4 disks, 3 of them are the same capacity, and the ...
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Restore 4-Drive RAID5 array after accidentally reinitializing last 2-Drive as RAID0
I have an Asustor NAS with RAID 5 4-Drive running, after system update it reboot into the initialize page in web console, I think it's part of the upgrade process so I started the initialize progress, ...
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Problems converting a raid1 to raid5
I had a clean raid1 which I tried to convert to a raid5 following this procedure:
https://dev.to/csgeek/converting-raid-1-to-raid-5-on-linux-file-systems-k73
After the step:
mdadm --create /dev/md0 --...
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Can I restore my HP array after 2 disks replacement?
I have HP array with 12 disk each on 2 TB. I configured them with RAID5
Suddenly two disk has ben failed and after two days another disk have been failed.
And the array failed to start.
I replaced the ...
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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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LSI MegaRaid not rebulding RAID5
I have a LSI megaraid Controller witha RAID5 array of 4 disks.
This has been running for several years.
Yesterday The controller degraded the array and I cannot access the data on it because it thinks ...
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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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Raid 5 array won't assemble after 1 drive's partition table was wiped
This is my first post/question here, so please bear with me.
I have an issue with my system where my existing raid5 array won't assemble. This occurred after I inadvertently wiped the partition table ...
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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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Unable to Install Linux Mint on RAID
Second week now than I'm trying to setup Linux Mint on software RAID5 without success.
I'm able to setup the software RAID5 on the live CD with three 240GB SSD, then the installation setup fails to ...
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Mixing Seagate Ironwolf 4TB ST4000VN008 and ST4000VN006 in RAID5 [closed]
I have purchased 4 drives from Seagate to build a home cloud based on RAID5. However, I occasionally ordered different models: two ST4000VN008 and two ST4000VN006.
Now I am wondering, shall I send 8's ...
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HP ProLiant DL380e Gen8 - Cant Access Raid Controller
i have a HP ProLiant DL380e Gen8 Server with ah P420 Raid Controller. I have configured Raid 5 with 3 Disks. I want to expand the Raid with 2 more Disks. But i cannot access the Raid Controller -> ...
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How to recover file system (ext4) on raid5?
I have an ext4 file system on a raid5 array, /dev/md0 built from mdadm.
I found it wasn't mounted after I reboot once. And I ran a fcsk on it but get a superblock error.
So I was going to run mke2fs -...
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RAID 5 with Windows Server 2016 R2 - 45 drives - 10 hot spare
I have a 45 drives server that will be running Windows Server 2016 R2. It will be fully populated and utilizing RAID 5 and I want 10 of the drives to act as hot spares. We have been searching all over ...
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Synology SHR Volume - Migrate from 3 disks (RAID5-ish) volume into 2 new disks (RAID1-ish)
What I have:
3 x 6TB SHR Volume with 12 TB redundant storage (1 disk recently broken)
What I want:
2 x 18TB SHR volume with 18 TB redundant storage (I'll expand the volume after the migration)
Of ...
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What's the difference between a "degraded" RAID 6 array and a "clean" RAID 5 array?
Suppose you have two RAID arrays, one with N disks and one with N+1 disks. The array with N disks was formatted as a RAID 5 and left alone, while the other array was formatted as a RAID 6 before one ...
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RAID Recommendation Request: 2x RAID5 arrays, 1 Large RAID5, RAID10?
I just ordered a new PowerEdge R650 which will be the primary server for our company. It will run HyperV with 10 - 12 virtuals on it, mostly Windows but some Ubuntu. All the standards: domain ...
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Raid Array with only a Partition of some Disks
I was wondering if one could set up a RAID-5 array such that only some space of the third disk is used in the raid array and the left over space can be used as a non-raid volume.
I have three HDDs ...
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How to partition disks in Debian 10 installer for RAID5 on UEFI machine?
Installing Debian 10. I have 3 disks I want to use as RAID5 on a UEFI machine.
I have tried several configurations that either led to failure to install grub or failure to boot (stuck in grub-rescue ...
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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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Rebuild RAID5 with uncorrectable sectors on multiple disks
My software RAID5 (mdadm) system consists of five disks. Recently, I get I/O errors when reading certain files. Most of the other files are still readable.
At first, I was planning to find out which ...
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Windows RAID drive performance suddenly dropped
I have a Windows system that has as a data drive, one RR640L controller. Attached to this controller are four 2TB drives in a RAID5 configuration (2 Seagate ST2000VN000 and 2 Samsung HD203WI).
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P420i controller / 2 disks failed in RAID5 / RAW FS after parity initilization
We woke up this morning with 2 failed disks on RAID5 with a single hot-spare configuration.
Hot-spare disk didn't replace any damaged disk maybe because there are 2 disks failed at the same time.
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Add disk to QNap Raid 5
I have a QNap TS-569 Pro configured with Raid 5 of 4 hard drives of 1 Terabyte each.
It has 5 disk slots and I want to increase the size of the Raid of another Terabyte.
Reading the manual seem pretty ...
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RAID5 array is rebuilding after a fresh install of Ubuntu 20.04 Server
I installed Ubuntu 20.04 Server on a system with three Seagate 6TB drives. I have partitioned both sda and sdb in two partitions. The first partition on each disk is of 5G. I combined those two 5G ...
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e2fsck cleans a filesystem and then a few minutes later (after a lot of reads) there are errors
The filesystem is on an LVM RAID5. It appears to be working correctly:
$ sudo pvs
[sudo] password for jrwren:
PV VG Fmt Attr PSize PFree
/dev/sda2 datavg lvm2 a-- <7.28t ...
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mdadm : assemble raid5 created with missing disk
2 years ago i've created a raid5 array with 2 disks like this :
mdadm --create /dev/md0 --level=5 --raid-devices=3 /dev/sdb1 /dev/sdc1 missing
Now i've rebuilt my system with latest ubuntu server LTS,...
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Do I need a spare slot to replace a drive in an LVM raid array?
I am planning to set up an LVM raid 5 array and looked at how to replace a faulty drive.
I found the replace command
lvconvert --replace dev_to_remove vg/lv [possible_replacements]
For this to work, ...
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Mounting 32Tb RAID Volume Causes Server To Crash
I have a 32Tb NTFS RAID 5 volume. 5x8tb SATA, LSI 9361i+Supercap.
Was working fine until it started behaving strange on day - drive name vanished and data seemed to vanish. Then rebooted, Windows 10, ...
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Recover mdadm array
I had a raid5 array built with mdadm and btrfs filesystem on top of it.
My sata card failed and all my drives dropped at the same time. What should I do if I wanted to rebuild the array or restore ...
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How to create a more than 64TB software RAID 5 Volume on Windows? [closed]
A customer is looking to create a RAID 5 array on Windows 10 Pro, but Windows RAID 5 only allows him to only create 63 TB volume instead of his 112 TB (he has 8x16 TB HD).
Is there any way to create a ...
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What Happens When You Write Data To Raid While It Is Scrubbing?
I have a RAID 5 setup with almost 15TB of data capacity.
In the past I have let it go unchecked for too long, and found that multiple drives had SMART errors and I want to prevent bad blocks. I am ...
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I cannot expand RAID5 capacity on an Adaptec RAID 71605, an "expand" in ribbon is greyed out
I have 4 disks RAID5 array and want to add additional identical disks in order to expand the capacity.
I do everything as instructed, but "expand/migrate" buttons are greyed out, so i cannot ...
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Getting high read await in Zabbix monitoring, is this a common behavior for RAID5 disk array?
We are running a Oracle 11.2 DB on Redhat 6.8, and disk array is configured as RAID5, which is using a Lenovo 730i RAID adapter.
I checked RAID policy and found that "Read Ahead Always" and &...
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