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.
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Is it possible to have subvolumes with different replication modes in btrfs?
I am setting up a system with two 3TB hard drives as storage backing. As it's a desktop station, I thougth about the following disk setup:
sda
+ /boot with 500MB
+ btrfs for the remaining GBytes
sdb
+...
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Which SATA operation mode for SATA III SSD in laptop?
Which is the best setting in BIOS for SATA operation mode for a laptop to connect SATA III based fast SSD drive, and why?
ATA
AHCI
RAID On (Intel Rapid Storage)
There will be no RAID set in system (...
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RAID 1 vs Single Drive
I was playing around with software mirroring on a Windows 10 box with two SSD drives. There was no increase in read throughput between a single drive and RAID 1. I was under the impression RAID 1 ...
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How many drives do I have?
This is the first time I ordered a dedicated server with 3 HDDs and I am quite confused. My limited knowledge tells me that
/dev/sda
/dev/sdb
/dev/sdc
are the 3 drives that I actually have.
But, ...
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Is Btrfs vulnerable to RAID write hole effect?
If not, does it mean that Btrfs in RAID mode is fully resistant to power failure?
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How to figure out boot disk from bcdedit?
I have Windows Server 2008 R2 software mirror.
I boot from volume c:.
When i use:
bcdedit
I can see 3 different "Windows Boot Loader" entries with "device partition=C:". How can I figure out ...
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Windows 7 not booting after failed SRT (SSD caching) install
This is a fairly new computer, only about a month old.
i7 2700k, z68 motherboard, with a 1.5tb WD black HD, and a 128gb crucial M4 ssd.
I followed the instructions for setting up ssd caching, the ...
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Multiple operating systems/partitions on a hardware RAID array?
I've read that running multiple operating systems/boot partitions in RAID arrays doesn't always work as planned and is difficult at best. Is this true only of software RAID arrays? If so, that makes a ...
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Linux RAID1 with only One disk
I have a hypothetical situation in which I installed my operating system using a RAID1 mirror. At some point I decided that this setup was overkill, my machine isn't system critical, I value doubling ...
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What is the intel matrix storage manager? and what is IAAnotif.exe doing running in the background?
I have windows 7 and this is running in the background.
Using process explorer, I can see most of the DLLs are named, but two are unsigned called locale.nls an SortDefault.nls. One has no description ...
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How to tell if a RAID controller is capable of true hardware RAID instead of fake-RAID?
I'm looking for a RAID card on newegg and I was warned not to get a "fake RAID" controller, where the striping, mirroring and parity processes are done on the CPU instead of the controller.
How do I ...
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determine chunk size of an existing raid array
What should I do to determine chuck size of existing raid arrays. I'm using software raid created by mdadm.
I've been probing around for a while and can't find the right utility to that job.
mdadm --...
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RAID5 / RAIDZ - is it possible to enlarge without losing data?
If I have a RAID5 with 4x1TB drives, and then in, say, a year I decide to upgrade to 4x2TB, can I swap out one drive at a time, then let the parity rebuild, even if it's mixed-size drives?
Obviously ...
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BIOS setting: AHCI or RAID (when using SSD + 2x hard drive in RAID-0)
I want to add a new SSD and use it as system drive with Windows 7 x64 installed.
As driver I chose newest Intel Rapid Storage driver (not MSAHCI). I know that I have to use AHCI as BIOS setting for ...
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Which Hard Drive Configuration on a new Computer?
I'm planning to buy new computer, but suddenly I found myself confusing regarding hard drives. I want a FAST AND SECURE way to store my data, but at the same time cost effective. This is going to be ...
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RAIDing flash drives
The other day I had what I thought was a great idea - I could buy up a bunch of cheap USB 2.0 drives and fill up the spaces in my 7-port USB hub for a super-fast RAID device! But in the light of day ...
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4 x 2TB drives, safe to use RAID-5? What is failure rate?
I've read a number of opinions on the risks of running a RAID-5 using 4 x 2TB drives. Apparently the failure rate of the 2TB drives is so high that there is less redundancy than is generally expected.
...
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Is it normal for Windows Software Raid (Mirroring) to slow a drive's performance?
I've been doing some performance tests on a few of my drives lately, trying to figure out which combination of drive/raid-level(or not) will give me the best performance (for Hyper-V incase anyone's ...
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Daisy-Chained firewire drives
I want to daisy-chain a couple of fw800 drives to my mac and sync data between them. If possible I would like to run software raid 1 on them. So I am looking for input around the following questions:
...
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Should I configure my New RAID5 Drives as MBR or GPT?
I have a new RAID-5 Setup on a Server here at work. I have just created the RAID-5, and its size is a little over 2.7 TB. Now, Iknow that MBR does not support anything over 2.2 TB, however, I have ...
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Mount Btrfs raid 5 from failed ReadyNas 104 on Linux - aka how I restore data from my ReadyNas
After about 7 years my ReadyNas finally failed, I would expect from Neatgear detailed recovery instruction, but I read dozens of threads - my problem is not uncommon, but solution was not found.
After ...
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SSD RAID in Haswell NUC with Ubuntu: Does TRIM work?
I want a low-power, small, silent x86_64 Ubuntu computer with storage that's resilient against hardware failure of a drive.
I'm thinking of buying D54250WYKH or D34010WYKH, one mSATA SSD and one 2.5" ...
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Does TRIM avoid the performance impact of mdadm RAID 1 on SSD?
It has already been mentioned in other questions that Red Hat recommends against using mdadm RAID 1 on SSD.
Red Hat also warns that software RAID levels 1, 4, 5, and 6 are not recommended for use ...
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Intel Rapid Storage / Smart Response SSD caching issue
Background
Recently built my own PC. It works! Almost.
It's been a while since getting into the guts of these things, so I'm familiar but may be missing something simple.
FYI, I don't care about ...
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Does using Smart Response Technology (Z68 chipset) require a UPS to prevent data loss?
The Smart Response Technology (SRT) of a Intel Z68 can operate in two modes: Enhanced (Write-through) or Maximized (Write-back). Clearly, the Maximized mode sounds better since it will give you near ...
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BTRFS, RAID5 or RAID6 for data storage?
I need to setup a storage for my server. The hardware is a 5 bay enclosure and 5 WD RED 8TB.
I have read the statistical probability of a catastrophic failure in RAID5 (= normal RAID) rebuild after ...
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A weird issue relate to ext4/lvm/raid-5 after partition recovery
I have 3 hard disks, in the following paragraphs named /dev/sda, /dev/sdb and /dev/sdc, newest came first. Note: /dev/sdc has one primary partition /dev/sdc1, one extended partition /dev/sd2, and 3 ...
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Drive missing from Optimize Drives since upgrade to Windows 10 1803
Since upgrading Windows 10 (Pro) to version 1803, one of my drives is missing from the Optimize Drives list. The drive in question is, my D:-drive, a software-defined RAID-0 (striped) over two disks.
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Parity errors after verify with Intel RST
I have Intel RST RAID 1 running on a Windows 7 machine. I have it set to do a verify and repair every week. I frequently notice parity errors, some weeks over 100 for a 1 TB RAID 1 array. I've ...
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What to do when a RAID 1 is full?
I am a total beginner when it comes to RAID storage, but I hope you all bear with me on this.
I want to set up a network-based file server for my music recordings at home. For now, my plan is to use a ...
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Windows 10 Storage Space Creation Error
I've been having issues lately with an existing storage space. I had a drive fail and the storage space was too thinly provisioned to recover. I removed the drive from the space and recovered some ...
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Why are hardware RAID solutions relatively expensive?
I was looking more recently into building a RAID-10 array for good drive performance and parity, and I started looking into hardware RAID cards. I was thinking I'd be paying under $100 for one, but it ...
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Is there any disadvantage on using desktop ssd for raid server storage?
I know that it's necessary to use enterprise SSD for Raid server storage, but the company I work for cannot afford that kind of SSD, (even the recommended SAS HDD is too expensive). This limits my ...
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Windows 7 install issues with 2x3TB in RAID1
Not sure what I've done wrong. Built one PC before successfully in a similar way but this one seems to be struggling.
I have the following components:
Mobo: ASUS P8Z68-V/Pro Gen 3 (updated to latest ...
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Why is RAID5 disabled in windows 8?
I want to create a RAID 5 array in windows 8 with 5 Dynamic Hard Disks and it is grayed out.
If this is not possible why not hide that option.
If it is possible why it is disabled?
after your ...
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New motherboard or new PC to gain access to RAID drives
I have a PC that refuses to boot. I have 4 disk drives on a RAID array (RAID 0, or possibly 1), that is provided by my motherboard. I have 1 primary HD, and an extra 4 for the RAID.
I want to recover ...
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How to access AMD RAID on X399M board through Ubuntu 18.04
I spent a while trying to make this work and I'm sure others have too so I'm posting this to have both question and answer available.
Setup
ASRock X399M motherboard
Threadripper 2
3x 4TB SATA3 HDD ...
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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, ...
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MDADM RAID-0 does not increased size after grow on AWS Linux with EBS
I wanted to grew a Raid0 from 2 disks to 3 (each 1TB EBS on Amazon AWS) but the size did not change thereafter. The RAID started with two disks sdc and sdd and the new one was sdf.
Here is the grow-...
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Firmware vs OS RAID (aka Windows 8 Disk Mirroring vs Intel Onboard)
So Windows 8 is out and I have a new motherboard. I wish to create a RAID 1 coupling between two HDDs -- for storage purposes only (my OS is on an SSD) -- but I don't know which is the best route to ...
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Can you add a hard drive to a RAID?
I've decided on creating a NAS running FreeNAS using a software RAID 5 setup. I want to start the RAID with 2x2TB drives and slowly add more 2TB drives as I go. Is this possible? If I have a full RAID ...
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Notification of RAID-Status in Windows 2008?
is there a way to configure Windows (2008 R2 SP1) to send an e-mail (or display a window/message) if one of the drives in a (software) RAID1 is having problems and needs to be replaced?
I'm looking ...
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Can Synology Hidrid RAID (SHR) be composed of 2 disks with different file-systems?
I did search a lot and found nothing on this exact matter.
I have a Synology DS2018J NAS with 2 disks 4GB each and EXT4 file system on both.
I want to change the file system on both to BTRFS, and I ...
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How do I tell my PC's RAID configuration
EDIT
Just a quick reword of my original question...
Using Windows XP how do I determine which disks/drives/partitions are under the control of of my hardware RAID1 system?
My original question:
My ...
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In mdadm's /proc/mdstat, what does [U_U] mean?
I just set up a raid 5 array for my media server. I set got 2 new disks, and set up an array with one missing drive, to copy the data from the old single drive to the new array, and later I will add ...
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HDD & SSD Linux: Hard resetting link
my current storage setup consists of two traditional HDD's and two SSD's in my Linux box, each two on their own RAID 1 array which is encrypted via luks. I have a story of sorts, rather than a ...
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Determining if motherboard has SAS compatibility and SAS software RAID compatibility?
What specs are you supposed to look for in a motherboard to determine if it has SAS compatibility and SAS software RAID compatibility built into it?
I'm looking under the details of this:
http://www....
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NAS using SATA and ATA disks
I have about 10 hard drives some SATA 2 and some ATA. I would like to build a NAS box where I can use all these disks and build a hugh NAS disk. All disks together sums about 3 TB. I know that ...
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Upgrading from RAID0 HDDs to SSD - can I use the RAID0 disks after the upgrade?
I have two HDDs in RAID0, on a Gigabyte EP45T-DS3R motherboard. I'd like to install Windows 7 RC on a solid state drive, and use the HDDs as data storage. The HDDs are full of data (which I'd like to ...
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Debian : Encrypted Raid 1 setup.
We have a Debian X64 server which has the following config. One single 512GB SSD, which has our OS and two 2.0TB HDD's which have data like attachments, etc.
The two 2.0 TB drives are in RAID-1 ...
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