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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How to format NVMe drive in Linux suitable for raid 1 and lvm on xen Host
I want to create a software raid on two identical SSDs
How do I create partitions and format them optimal?
lsblk
nvme0n1 259:0 0 953.9G 0 disk
nvme1n1 259:1 0 953.9G 0 ...
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Unable to get my rsync of my software RAID 6 past 40MB/s. Looking for suggestions
Wondering what I could adjust to get my RAID 6 Software Raid to resync quicker. Currently it's proceeding at max of 64MB/s and averages to something around 25MB/s. Hoping to get it to 200MB:
[...
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Use storcli to get / set spare drive
I have an LSI controller with a R10 array consisting of 4 drives + 1 spare. Storcli reports:
----------------------------------------------------------------------------------
EID:Slt DID State DG ...
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Is LSI rebuilding as background task
I'm investigating the state of an LSI raid array that might have recently suffered a drive failure. The array had a spare configured, so the array is not degraded. However, the storcli command ( /...
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How check if UBad disk on LSI RAID is really failed
I have taken over responsibility for a new server with an LSI RAID card, configured with 4 drives (in R10) plus one spare. I normally manage RAID arrays by taking down the server and configuring via ...
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install disks with raid on a controller of the same model? without losing data. hp dl160 g9 - b140i
I have an HP DL160 Gen 9 server with 4 disk drives, 2 HDD with RAID 1 and 2 SSD with RAID 1.
This server is restarting repeatedly when the esxi System boots.
If I install these 4 disks on an identical ...
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BIOS/Hardware Mirror Drive RAID 1 - Reliability, Consistency and Synchronization
Assuming I have enabled in BIOS a (presumably) hardware RAID in mirror aka RAID1 mode (as opposed to Software-one provided by the OS like Windows Storage Spaces), how is it actually ensuring data ...
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How can I fix my unbearably slow NFS linux server?
I'm currently struggling with an extremely slow server providing home directories through NFS, and I cannot figure out the origin of the problem. It's all running on Nixos, but I don't think that's ...
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Avago/LSI flash tool does not detect SAS card
I'm trying to reflash my LSI 9300-4i (M1210) RAID card but hitting a wall. First of all, my BIOS detects the card as shown here:
And then I've tried booting DOS, Windows 10, and EFI shell. When I ...
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pvs vgs do not show existing drive group from multipath
I connected a raid system via multipath. multipath -ll show correctly the subdrives and the mapper is present under /dev/mapper.
However I cannot see any physical or volume group using pvs, pvscan vgs ...
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Server 2022 Expand C:
I have a server running Server 2022. It has 2 Disks running in a raid configuration, copying everything from one disk to another (2TB per disk, 2TB total storage). I added 2 more disks(2TB ea), ...
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mdadm raid1 showing removed disk
I have a dedicated server which consists of two hard drives with 5 partitions each.
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
sda 8:0 0 1.8T 0 disk
├─sda1 8:1 0 1M 0 part ...
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LSI IT vs IT_ACM firmware
I purchased an older LSI 9300-4i card and before I put it into production I want to flash the latest firmware. In addition to IT vs IR flavours of available firmware, there's also an IT vs IT_ACM ...
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Converting partition from basic to dynamic in Windows Server 2022 gives security error
The server has 2 1 TB SSD drives, meant to be in RAID1 on the OS level, using Windows Disk Management, or Diskpart.
We have over one hundred of servers with this configuration which were installed ...
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Hetzner server installimage - 4 disks, raid 1 with two of them
The following problem I have 4 disks on my Hetzner server (because cheaper dont ask)
I want Raid 1 with the most space possible. For easier setup I'm first trying 2x2TB ignoring the other 2 disks for ...
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ESXI RAID : add an extend to existing VMFS datastore
I noticed in ESXI (6.5) there is option to create something like software RAID, but it is called "Add an extent to existing VMFS datastore", does anybody have experience of what it does and ...
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Why is omreport storage vdisk controller=0 inconsistant output across servers
I wrote a script fetching the RAID configuration of the latest VirtualDisk.
On one server I get :
# omreport storage vdisk controller=0 -fmt ssv | awk '-F;' '/^ID/{print}/Virtual\s*Disk\s*[0-9]+;/{...
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Unexpected poor performance with NVMe drives on an X9DR3-F
I am experiencing what seems like uncharacteristically low performance from an NVMe SSD stripe in a server. The hardware is as follows:
Motherboard: X9DR3-F
CPU: Dual E5-2650v2
RAM: 128GB DDR3-1333 ...
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How does VMWare vSAN's RAID5/6 work
BLUF: How does VMWare's implementation of RAID5/6 work?
Below is VMWare's chart for RAID5/6 in vSAN:
It seems VMWare is altering RAID's terminology. When I hear RAID6 I think two parity of something; ...
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Find which physical disks are in virtual disk from CLI
I have the following virtual disk :
# omreport storage vdisk controller=0 vdisk=14
Virtual Disk 14 on Controller PERC H730 Mini (Embedded)
Controller PERC H730 Mini (Embedded)
ID ...
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Can one VG (Volume Group) contain different types of PVs (Physical Volumes)?
The background is we have our database data directory on an LV which is located on a VG. We want to use the LVM's snapshot function to backup our database data, but this VG has no free PEs left. We ...
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Mdadm Raid5 kicking non-fresh drive from array
I set up a mdadm raid5 with 3 drives initially: sdc1, sdd1, sde1. They array creation was successful without issues. Later I decided to extend the array using one more drive. After proper partitioning,...
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Issue with Volume Mounting after Server Restart
Originally on bkp-01 instance. The server and disk have manually been set to a different availability zone. The disk are running zfs for backups/snapshots. It's an old server with a manual Raid ...
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HPE Smart Array P410 - Replacing failed drive of a degraded mirror with a new one using ssacli with the failed drive kept connected?
A server is using attached drives without the HP hot-plug drive cage, with drives attached to P410 using two SFF8087 -> 4x SAS SFF8482 cables. I can add new drives while running, but cannot remove ...
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Increasing RAID1 (mirror) redundancy in HP Smart Array P410?
Please is it possible to add a third (or more) drives to a mirror (RAID1) in P410? IIUC it would mean creating "Mirror Group 3" (or more). I could not find any way to add a new mirror group ...
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Ubuntu 22.04: Rebuilding a failed RAID 1 OS Boot drive
I'm very new in the Linux world and I find it very appealing so I decided to buy a rackable server to use it to learn more (it's a very old Dell R710 which i found very cheap but I find it perfect for ...
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Replacing a single SSD in 4 disk mixed software RAID 1 & RAID10 system
I'm about to replace a single SSD in a 4 SSD RAID 1 & RAID10 system. My webhoster will only do the drive replacement, but not help with adding it back to the array after. I've not done this before,...
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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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How is Hardware RAID for NVME drives configured on SuperMicro?
I've purchased as x13sae motherboard from supermicro which is advertised as
M.2 Interface: 3 PCIe 4.0 x4 (RAID 0, 1, 5) M.2 Form Factor: 2280 M.2 Key: M-Key
I have two NVME dries in my m.2 ports. I ...
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drive went missing but came back on reboot, how to rebuild missing boot partition?
I checked my server and found one drive to be missing:
root@tiefenkaese ~ # lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
nvme1n1 259:0 0 476.9G 0 disk
├─nvme1n1p1 259:2 0 32G ...
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Storing each file on separate physical drives for a single file volume
I am working with a bunch of really large files (>100 GB). As we often process multiple large files in parallel (e.g. 10-12), we think that it might be advantageous to have each file be stored on ...
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Ubuntu RAID 1 mdadm, failed boot, files are there but won't boot
Have a 3 disk RAID 1 array of my os drives, ubuntu 20.04, software RAID. I had to shut the server down temporarily to install a new PCI card, went to boot it back up and the OS said no boot device ...
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Best practice to install proxmox (7 or newer) on server
i did a lot of research and i am still wondering, where to install os (proxmox). We have ProLiant DL560 gen8 and gen9.
My options:
micro SD card 32/64GB, not good because of lots of writings from
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RAID10 on SSD drives
I can't find information about using SSDs in RAID10. If I want to build RAID10, should I create RAID partition in 80% of total drive size on each drive?
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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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zfs performance: split controller across mirrors vs splitting a mirror across controllers?
Suppose I have
4 disks split into 2 zfs mirrored pairs
2 sata controllers, where each can take 2 disks
Obviously, better expected uptime will be achieved by splitting each controller across both ...
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can I change the Raid setting without reformatting the hard disk?
I have configured the Dell R740 to use Raid 5 (mixtured of HDD/SDD storage) to run citrix xen server for VMs.
In the past it was configured as Raid 1 mirroring and resulting insufficient storage.
...
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LVM mirror with failed disk can't be repaired
I'm trying to help someone resurrect a RAID1 mirrored LVM logical volume on an old server running Fedora 20 (lvm2-2.0.2.106, linux 3.19.8-100). One of the disks in the mirror is dead. The disk ...
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Rebuild a drive in a raid 1 array that got disconected
I am running on Ubuntu 20.04.4 LTS. I have 2 drives in a RAID 1 array. One of them got acidentely disconnected but is now connected again.
raid1 sdb1[1] sda1[0]
I have [U_]
How do I synchronize?
...
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HBA in Linux storage server - best practices for many HDDs
I will launch and administrate a Linux storage server: 4U, HBA LSI 9500-16i Tri-Mode, hybrid. It wiill possess 12 positions for the HDDs/SSDs in the back, 24 positions in front. There is an expander ...
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Enlarging RAID1 virtual drive online on LSI MegaRAID SAS 9240-8i without downtime?
I recently went out to a customer location and replaced + rebuilt a RAID1 drive group on their Lenovo TS440 server, going from 2 TB drives to 4 TB drives.
Question is - what's the best way to enlarge ...
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Recover Raid in Synology DSM 7
After a DSM update, an issue with Synology branded cache drives caused my pool to crash and become unavailable. The 3 dots on the bottom only had the option to remove the pool, no option to enable ...
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Pooled storage with varying redundancy per file system
I have some files that I want stored mirrored. I have some files that I only need single copies (i.e. scratch data, easily regenerated data, etc). And I have some files that are so critical, I want it ...
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How do I resize the filesystem on a RAID0 array?
My server consists of 2x512GB and 1x3.5TB disks.
root@bb2 ~ # lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
nvme0n1 259:0 0 476.9G 0 disk
├─nvme0n1p1 259:3 0 10.7G 0 part
│ └─...
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RAID1 M.2 SSD (2 Drives) | 1 Failed, I removed and Replaced with a new one, but its state stays "removed"
I have a Ubuntu Server RAID1 M.2 SSD (2 Drives) where 1 Failed, I removed and Replaced with a new one, but its state stays "removed".
I am new to RAID Stuff, Below are my RAID Details:
cat /...
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Rorke aurora raid 6 won’t load in linux
after a power failure a raid 6 won’t load in Linux without any disk failure
The message while booting is raid restored failed function: numaraid
Thanks
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How to change location of NFS share without changing autofs configuration
On our data server we currently share a location on an HDD raid /volume1/folder with multiple linux servers via autofs. Every server mounts this location to /data/shared/folder. We now updated to an ...
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RAID arrays failed, now will not restart; mdadm --examine shows drive healthy but --assemble fails missing two disks
This is a Mint 21.1 x64 Linux system, which has over the years had disks added to RAID arrays until we now have one array of 10 3TB and one array of 5 6TB. Four HDs dropped out of the arrays, two from ...
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RAID with different drive types possible?
In a high density storage server, which is in a RAID array, do all drives have to be of same type. Such as a mix of drives SSD, SATA? In a RAID array most controller require only that all drives be of ...
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Swapped in new SAS drive, RAID still shows degraded, what next?
I need to replace a failed RAID 1 drive on an ancient PowerEdge 2950. The old drive was throwing amber warning lights with the LED showing error 1810.
I have a new SAS drive installed and the ...
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