Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [raid]

Redundant array of independent/inexpensive disks; a technology which utilizes multiple disks to provide increased reliability, performance, and/or redundancy. Can be implemented either in software or with a hardware controller.

0
votes
1answer
20 views

How can i convert software RAID 1 to non RAID?

I'm new to software RAID 1, hope I can seek some assistance in this forum. My superior wish to have backup rather than soft RAID1. How can I convert soft RAID 1 back to non RAID without any data lost ...
0
votes
0answers
22 views

Intel RAID client : “Mark as Normal” for RAID1 member - what's the significance of that?

Summary RAID client software help text doesn't cover RAID 1 for failed disk status. Situation I am using a two disk RAID 1 array on Windows 10 Pro. The RAID client software reports one of the two ...
0
votes
1answer
14 views

MSSQL database physical design: RAID or spreading filegroups across different physical drives? [closed]

I'm going to build a Microsoft SQL server database which could end up being more than 40 TB in size. Which of the blow physical designs of the server will result in better performance1 and db ...
0
votes
0answers
8 views

Requirements to host mysql server on desktop? [closed]

This is my first time having anything to do with creating a database so thank you for putting up with this! I'm trying to create a mysql database on a local desktop (vs on a remote server). The db ...
0
votes
0answers
13 views

Synology: Cold storage + backup

I got a 4-bay Synology NAS. For now, I populated it with 2 brand new 4TB HDD's. My main use cases are: - Backup data from my computers (maybe even periodic images) - Cold storage for shared data - ...
1
vote
0answers
13 views

Ubuntu Home Server Raid 1 (Degraded) to Raid 5

I have a home media server containing two groups in Raid 1 with two disks each. One disk in a group has died and now I have a degraded Raid 1 group and a healthy Raid 1 group. Can I convert the 3 ...
0
votes
0answers
6 views

Backup: How to mirror/clone LVM LVs (or VGs) on demand?

So far, I have a semi-automated backup approach for the whole system installed in different LVs, using LVM (CoW) snapshots (which can be created upon boot to avoid data corruption). That is, if I ...
0
votes
0answers
15 views

Disk reporting incorrect amount, and won't initialize

Sup Currently troubleshooting why this 500 GB WD Blue Sata HDD that is not displaying correct in disk management, it's displaying 928.00 GB as if it was once in a raid 0 array with another drive. I'...
0
votes
1answer
18 views

How to create raid1 mirror for existing mdadm raid0 - without overwriting data

I created a /dev/md1 raid0 across two drives, added ext4 filesystem, and it's mountable and working fine. I created a /dev/md2 raid0 across two drives, added ext4 filesystem, and it's also mountable ...
0
votes
1answer
30 views

Steps to swap failed disk in RAID 10?

I have a RAID 10 array consisting of 4 disks. One of them has failed and I have removed it from the array. I have purchased an identical new drive and am unsure about how to add the new drive to the ...
1
vote
0answers
37 views

Is my drive failing?

I have a RAID10 array on my Ubuntu 14.04 LTS server (4 drives). mdadm reports one of my drives as having failed or dropped out of the array. I am trying to determine if this drive is failing or ...
3
votes
0answers
36 views

Linux Software RAID - Migrate from disk device to a partition

I have two 8TB disks configured as RAID1 using mdadm on Ubuntu 18.04 server. They way I created software RAID was on the whole device - /dev/sdb and /dev/sdc - instead of the partition such as /dev/...
0
votes
2answers
19 views

Can't add unallocated 2nd drive to C:\ in either striped or spanned volume

I was playing with getting rid of my BIOS RAID 0 and using AHCI. This would destroy the RAID 0 meaning I'd have to create a software RAID with Windows. After converting to AHCI and doing a clean ...
0
votes
1answer
46 views

Cant Find RAID 1 md0 drive using mdadm Ubuntu 18.04.1

I used mdadm to create a RAID 1 array using two 3TB drives. After the process, which took all night, I found that the two 3TB drives, /sdb and /sdc, have disappeared from the file explorer. Rebooted ...
0
votes
0answers
44 views

onboard hardware raid 1 resyncs everytime on shutdown

Onboard hardware RAID 1 re-syncs every time on shutdown. I have 2 Western Digital red NAS 2.5 inch hard drives on a RAID 1 setup that uses the motherboard RAID controller. On shutdown it re-syncs but ...
2
votes
2answers
119 views

M.2. PCIe adapter with two M.2 SSDs only shows one

I have just finished my (first ever) server build. Everything seems to work ok. Except I only see one of the two NVMe M.2 SSDs that I installed via a PCIe adapter. (At least, it shows as 500 GB, ...
0
votes
1answer
45 views

How to activate disk that was originally in Windows RAID 1

I took HDD from a computer that was running RAID 1. I have inserted that drive into another computer expecting it to be immediately recognized. It is not recognized, and Windows can't activate it. ...
1
vote
1answer
21 views

RAID 10 with external hard drives on linux

i recently turned my old laptop (lenovo G550) into a NAS machine running ubuntu server. since it's a laptop, i can't put more than 1 SATA HDD (or SSD) into it. because of that, i need to use external ...
0
votes
1answer
29 views

Combining SSDs using RAID-0

If I have 2 SSDs via SATA3, both reaching speeds of about 500MB/s, which is close to SATA3 limit, does it make sense to combine them using RAID0? I mean if the SATA3 chip can provide the 6Gb/s speed ...
0
votes
1answer
31 views

Unable to Mount Partition from NAS RAID Array to Recover Data

Ubuntu newbie question. Similar questions are asked here but that relates to motherboard and here, but that does not address "mounting" issues. I have one disk of a 2 disk raid1 array that failed in ...
0
votes
1answer
35 views

How do I set up a raid configuration in a separate case from my computer?

I want to set up a RAID 5 configuration with a bunch of drives but my current case has no hot swap bays and doesn't have enough bays or sata ports to connect them all in the same case. I want to put ...
0
votes
1answer
118 views

Can't install Windows 10 on a Gigabyte Aorus Pro X399 motherboard

I've built a Threadripper PC using the Gigabyte X399 Aorus Pro motherboard, and I'm trying to install Windows 10 on it. I used Microsoft's Media Creation Tool in my old PC to create an ISO image, ...
1
vote
1answer
68 views

Failed GPU passthrough using Unraid 6.6.6

A while ago, I have build a new Ryzen setup. I am currently experimenting with Unraid 6.6.6 and trying to setup my daily Ubuntu VM with a passed through GTX 1060 from Inno3D. Unfortunately, I get ...
1
vote
0answers
55 views

NVMe Drive not Detected on Linux

I am running Kali Linux and it won't see my NVMe m2 drive If I turn off Intel rapid storage technology in the bios then it will work but i will no be able to use windows anymore. Any way to fix this? ...
0
votes
0answers
139 views

Unusual slow SSD on RAID 0 performance

I'm using a ThunderBay 4 external enclosure as my main storage and backup unit. Recently I bought two 1TB Samsung EVO 860 SSD to improve performance of my data drives. I installed them using NewerTech ...
0
votes
2answers
48 views

What is the lethality of a SMART error?

We have a 40 TB storage server in RAID 5, with twelve 2 TB drives. One drive is acting as a hotspare, and it's being managed with a hardware RAID controller. For some forsaken reason, three drives ...
0
votes
1answer
118 views

How to repair mirror set in Windows Storage Pool?

I have a storage pool with 2x2 drives in it. This is an "upgraded" Storage Pool being hosted by Windows 10 1809. One of the drives has started throwing errors -- SMART shows over a thousand recently-...
0
votes
0answers
35 views

Marvell 88SE9230 not prompting bios

I bought a Marvell 88SE9230 and I connected it to the PCIe x16 port of my desktop ACER Aspire TC-605. In Debian, lspci detects the card and the disk utility shows both hard drives connected to the ...
0
votes
0answers
26 views

How to prevent MDADM from failing drive for read errors?

How can I assemble MDADM RAID array with drives previously failed for read error such way it will keep the array assembled despite read error(s) – ie. how to prevent MDADM from failing drive due to ...
2
votes
3answers
121 views

Unrecognized disk label using hard drive

I have a old hard drive that I am trying to use. I don't remember if it was used in a RAID with lvm or zfs or another format. When I boot in Windows 10, I can see it under disks and it loads with no ...
0
votes
0answers
87 views

The SSD is not recognized by Ubuntu 18.04 during installation

I have DELL Precision, with 512GB SSD. I did shrink the only Drive C, and made 125 GB of unallocated space to install Ubuntu on it. restarting the system choosing boot, install Ubuntu, the ...
0
votes
0answers
26 views

Migrating NAS storage to new HDs with JBOD storage

I have a QNAP NAS here with 4 HDs where one is starting to fail. So I want to migrate to a new one. As this is not RAID5, I want to find out if there are any convenient ways to migrate to new HD(s) ...
0
votes
0answers
37 views

dmraid tries to mount disk that is part of an array at startup

I have setup a software RAID mirror using two disks - /dev/sdb and /dev/sdc - with dmraid a long time ago, so I don't quite remember what I actually did. But I remember that mounting at startup did ...
0
votes
0answers
26 views

Can I make a normal installation of Linux (eg. Debian 9) from single drive to raid?

Various server rentals are nowadays are selling servers with let's say 4 drives.. eg: 4 x 2 TB drives.. By default they install their os inside the 1st HD.. So I have sda - with / mountpoint 64 gb ...
0
votes
2answers
47 views

Harddrive RAID impact on CPU

Regarding the risk of losing data due to read errors (particularly a stark risk with RAID 0). Going above 0, we are able to hedge against failures at different levels. All of this I understand. ...
0
votes
1answer
119 views

Move from a Raid 0 configuration to single drive: is possible to copy the OS?

I have a computer with 2x128GB M2 drives, which are mounted in Raid0 configuration. This is how the laptop was sold; so the main drive hold the recovery partition and the OS. I want to upgrade the ...
1
vote
0answers
136 views

BTRFS RAID5 disk failed while balancing

If you clicked on the link to this topic: Thank you! I have the following setup: 6x 500GB HDD-Drives1x 32GB NVME-SSD (Intel Optane) I used bcache to setup up the SSD as caching device and all ...
0
votes
1answer
216 views

What is plex? “plex is missing” replacing disk in a mirror [duplicate]

A similar question exist which the author himself has answered by actually giving in on the question and it relates to Windows 8. I found an answer but it is for Windows 2016 Server which might be ...
0
votes
1answer
63 views

How can I check if my UEFI supports RAID?

I can't find it in UEFI settings. Motherboard name is ASRock Z370 Pro4. I had a look at the specification at the manufacturer's site however all the info they provide is: 128Mb AMI UEFI Legal BIOS ...
0
votes
0answers
20 views

Do X99 equipped MBs running Windows 10 in RAID mode produce a RAID log file? If so, how to access?

I'm running Windows 10 Pro x64 on a Supermicro C7X99-OCE mother board with the X99 Platform Controller Hub that supports RAID. BIOS mode is EUFI. How do I access any RAID logs? Here is the output ...
1
vote
0answers
37 views

How do disparate drive sizes work with tiered storage spaces

I (believe) I understand simple Storage Spaces scenarios reasonably well, but I can't seem to find good information about how it all works when you involve a cache tier. To create a 2 column mirror, ...
0
votes
1answer
70 views

mdadm raid has unknown filesystem after adding new disk

My Computer is running ubuntu 1804 but i am new to linux. I am using mdadm and created a raid-5 with 3x 4TB drives (sda, sdb sdc). OS is on a separate SSD (sde). No, I don't have a backup. Yes it is ...
0
votes
1answer
62 views

Unable to upgrade current 32GB SSD on Dell XPS 15 9550

I have a Dell XPS 15 9550 with a 1000GB HDD and 32GB SSD and want to upgrade the SSD which is currently only used for cache (from what I know). I bought the Samsung 970 Pro NVM m.2 SSD. I plugged it ...
4
votes
1answer
261 views

How does Synology Hybrid RAID work?

I'm not looking for what Synology Hybrid RAID (SHR) allows the user to do, but rather, what is the concept that SHR uses to allow you combine disks of different sizes? In most RAID implementations ...
0
votes
0answers
18 views

How to check if the cache SSD is working on an XPS 15 9550?

Does anyone know how I can check if the system is utilising the 32GB SSD as cache with the 1TB HDD on my Dell XPS 15 9550? The SSD is not showing up anywhere in Windows, which I gather is normal, and ...
0
votes
1answer
85 views

Software RAID Nonfunctional after power outage

My server lost power yesterday. It automatically booted up when power came back, but my RAID is now nonfunctional. The RAID array is a software RAID6 built with mdadm. Originally, the array used 8 ...
0
votes
0answers
17 views

what is scsi_eh_6 process? why it uses 600% cpu?

I have an ubuntu system with soft raid configured. I noticed this process scsi_eh_6 was causing continuous high load and was showing 600% in the "top" I killed the process and load averages came back ...
-3
votes
2answers
129 views

CPU: What is more important when reading from HDD, processor speed or number of cores?

I am considering which NAS to purchase, a Synology DS418play or DS419play. The former has a Dual Core 2.0 burst up to 2.5 GHz, and the latter has a Quad Core 1.5 burst up to 2.3 GHz. In either case, ...
2
votes
1answer
49 views

Why is resync 10 times slower than anticipated?

Two days ago, one of the Barracudas in my Synology (3 disks as RAID-5) triggered some "bad sector" warnings. No data lost. They're not many (62 over 24 hours, then none more) and according to SMART ...
0
votes
0answers
48 views

Adding third disk to BTRFS to RAID-1 did not increase size as expected

Original setup was having BTRFS RAID-1 with 2x3TB disks. I now added a third 4TB disk and did a btrfs balance. I did see the available disk space in df increase, but not to the amount I expected, ...