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.

learn more… | top users | synonyms

0
votes
1answer
158 views

Fixing a broken Raid-Array (Hetzner-Root-Server from Germany)

I do not know why but my Hetzner Root Server loses once a quarter its RAID array and the situation is different every time. This time I need further help. Maybe they want that I change to managed-...
0
votes
0answers
11 views

RAID 5 controller port multiplier

I have 6x320GB HDD and I was considering to create a RAID 5 system (it's for storage only). I use ubuntu 14.04 and I want to ask what RAID controller card allows for 4 (or more) ports without ...
0
votes
0answers
15 views

Utilization of disks for virtualization

Which disk components/configuration would work best for my scenario? I have a 1U server that supports 4 drives. It has 2 ports for SATAII and 2 ports for SATAIII. It's an 8 core Atom with 2.4GHz and ...
0
votes
0answers
12 views

What could be reasons for unexplicably loosing file permissions?

I have been experiencing at one point massive and now very rare loss of file and directory permissions, i.e. revoking of execution right for both system scripts, like /etc/mysql/debian-start, and ...
0
votes
0answers
69 views

How to upgrade/change BIOS on VIA VT6421 add-in card (if possible)?

(In fact no duplicate, but meant as a complement of this question: Drivers for VT6421A Controller Card ) While Q935612 was for card drivers, mine is not. My question is OS independent, as I want to ...
-1
votes
1answer
153 views

UEFI and RAID on disks above 2.2TB [AsRock Z97 Extreme6]

I have followed steps from the AsRock Z97 Extreme6 manual how to create RAID on disks above 2.2TB (manual says to use UEFI configuration instead Intel legacy RAID BIOS). In few words what I have ...
-3
votes
2answers
111 views

How to make hard disk space virtually unlimited? [closed]

We work with video editing. We produce about 30TB of raw footage every year and we are getting crazy. In fact, we keep buying hard drives and putting new projects into different hard drives every time....
1
vote
1answer
80 views

Would adding 2 extra ssd's to raid 0 make a difference in speed?

I have 2 850 evos in raid 0 currently. I'm getting 2 more from a co worker and I'm wondering if I add them into my current raid would I get any notable increase in speed or is 2 drives pretty much ...
0
votes
0answers
188 views

MDADM reshape really slow

To sum up : My raid reshape with mdadm is really slow. The complete story : 3 days ago I realized that one of my disks from a raid 5 array was faulty. I removed it and replaced it with a brand new ...
2
votes
0answers
77 views

Import zpool with one unknown missing vdev_children.

My raid-z zpool was in degraded mode, I have added a new disk in the zpool with the command: zpool add -f uhuru-test da3 The problem is that da3 have been accidentaly erased and now uhuru-test ...
0
votes
1answer
52 views

Hardware or Software failure? [RAID5]

I have a raid5 system containing of 4 Samsung SpinPoint F4 Hard disks configured for auto spin-down after 20 Minutes. It is a Linux Software raid. Today I noticed that upon access to the network ...
0
votes
0answers
49 views

Win 7 won't recognize 850 Evo single disk with HDDs in RAID1

This has managed to drive me nuts: I used to have 1 SATA HDD as a single drive for OS's and 2 SATA HDDs set-up as RAID1 using the onboard AMD controller for storage, everything was fine. I bought this ...
1
vote
0answers
76 views

“Disk read error occurred” booting from hard drive or USB on Windows Server 2008

Here's the setup: an Athlon X2, 4 GB of RAM, and a 2x2 RAID 10 array of 4 500GB drives, which also houses the OS. After a usual reboot the machine didn't respond to ping. I connected it to a display ...
1
vote
1answer
130 views

Healthy unknown partition created in WS2012 R2 storage pools - How to recover?

I'm seting up a file server from a WS 2012 R2 VM hosted in hyper-v. I have a raid 1 array for the file server storage that is implemented by an Adaptec 5805 raid card. This disk was set to offline in ...
0
votes
1answer
37 views

How can I archive files to blueray with redundancy?

Reading recently about facebook's usage/desire to use blu-ray disks for long term cold-storage, I wonder if this might be an additional mechanism to backup my photos and videos. The part that worries ...
1
vote
1answer
140 views

How to use fakeraid/dmraid with gpt?

So I recently set up Intel RST RAID on my Gigabyte z77‑d3h with UEFI firmware. The UEFI system recognizes the new RAID array instead of two disk and load bootx64.efi from the array. The RAID array is ...
0
votes
0answers
80 views

IBM x3850 m2 megaraid not showing physical drives

I have this IBM x3850 m2 with 2 physical drives installed but when I go to megaraid it doesn't show any of the physical drives So I can't build a virtual drive to install the OS What I have tried ...
1
vote
0answers
94 views

On ubuntu add a HD to RAID5 but the size do not Extension

In this time I have a RAID5 using three HDs(2TB*3) and I was tinking to Add a new HD and Extension the size to 6TB, The existing HDs is [adb][adc][add]=[md0] Then add HD is [sde] Wat I did is,,, # ...
0
votes
0answers
74 views

Is running a linux VM on a windows machine for btrfs software raid a good idea?

A bit of backstory: I used to have a raid 5 array on my main (win 7) computer using a highpoint raid controller. I used to think if any part died I could replace it, so I was safe as long as I did not ...
1
vote
2answers
32 views

What are the different widely used RAID levels and when should I consider them?

This is a copy from this question on Server Fault in order to have a very good question to which to can VTC other duplicates. This is a Canonical Question about RAID levels. What are: the ...
0
votes
2answers
22 views

Is there a RAID mode that allows files to be on one physical drive of the array?

I am wondering if there is such a thing as a RAID mode (or similar implementation) that allows to physically split up files without redundancy across multiple, differently sized hard drives to form ...
0
votes
0answers
76 views

Strange software RAID performance results (on linux)

I have four 2TB 7200rpm hard drives that I want to configure as a software RAID array, using mdadm on linux (Ubuntu 15.10). I took this opportunity to explore the read/write performance of various ...
0
votes
0answers
39 views

Is it possible to create RAID1 and JBOD with 2 hard drives?

I have a 2-Bay Synology NAS enclosure and ideally I want to achieve the following setup, unfortunately the GUI doesn't allows me. So my question is Is it possible to create the following setup? And if ...
1
vote
0answers
65 views

Is there a way to boot from a GUID Partition Table on a Intel FakeRaid (IMSM) RAID1 configuration?

I have a Intel H170 based Asus H170 PLUS Motherboard that supports Intel FakeRAID. Attached are two identical Seagate 1TB harddisks on which I want to install ArchLinux 2015-12-01. The UEFI BIOS on ...
0
votes
0answers
7 views

How to create the raid-1 configuration on the server

I have a centos 6.5 server(virtual) with one hard disk drive and my customer is asking another drive to it to create a bootable raid 1 configuration.(It had LVM). How to create the raid-1 ...
0
votes
0answers
9 views

Growing an mdadm RAID array with differently sized disks

I have a raid6 archive array made up of 4 2TB drives (+OS on an independent SSD). I'm starting to run out of space and my target final goal is 4 4TB drives. I don't have enough SATA ports to run both ...
-2
votes
1answer
52 views

RAID vs AHCI for backup

My SSD with Windows 7 recently crashed, so I'm going to purchase a new SSD and install Windows 7 to replace it. I'll also have to reinstall all the drivers for my hardware (motherboard, graphics card, ...
0
votes
1answer
91 views

MDADM rebuild raid 6 with 3 'failed' drives

I've ran into the following problem: My Raid 6 (/dev/md6) failed after 3 disks fell out of the array. One of the disks must have been out for a while (in SMART, 5 of the 6 disks have an uptime of ...
0
votes
0answers
416 views

Rebuilding degraded simple mirror volume (“The plex is missing”)

I'm interested in rebuilding a basic degraded dynamic volume without resorting to trivially breaking/deleting and re-creating the volume. There is no concern about data loss. I hope to use this as a ...
0
votes
0answers
43 views

How to suspend / sleep / spin down disks in RAID - Created by the Debian installer?

I have created a RAID 1, with two disks using the debian installer. The RAID is used in my server. Due to the fact that it's a private server and I don't care about performance but more about ...
0
votes
1answer
495 views

How to install Ubuntu 15.10 on an encrypted RAID 1

I recently set up an Ubuntu 15.10 (desktop) on a encrypted RAID 1 and want to share how to achieve this as it didn't work out of the box and I didn't find any tutorial. So what I wanted to achieve was ...
1
vote
0answers
43 views

Boot up from RAID with new motherboard

our computer was about to die (it beeped 5 times and then rebooted, AMI beep codes say that is a failing motherboard/cpu) so we decided to get a new motherboard and CPU, a Gigabyte F2A88XM-DS2 with ...
0
votes
1answer
218 views

How do you increase harddrive space on an Intel hardware RAID 1 with larger disks?

I have an old RAID 1 volume from about 7 years ago. A while ago I replaced one out of two drives with a drive with 4x the size and then recently I replaced the second two out of two disks. Both of the ...
0
votes
1answer
44 views

Migrating to a bigger hard drive

My PC is a Dell Inspiron T3500, running a Xeon 3530, and 12GB DDR3 RAM. I am currently running two WD Velociraptor drives, 300GB each, in RAID format, so it appears as one ~600GB hard drive on my PC. ...
0
votes
0answers
113 views

Debian: grub-install with LVM, crypto, and stripe

I'm working on getting Debian 8.2 installed on my system, and am having trouble with grub. It looks like the OS installs fine, but once I get to the first boot, I just sit at a grub prompt. Here's ...
1
vote
0answers
553 views

SSD TRIM support on RAID-1 array through Intel RST

I'm making the jump from HDDs to SSDs on my home desktop, and I'd like to retain a basic level of redundancy (RAID-1) like what I have with my HDDs. Right now, I'm using Intel's RAID controller on my ...
0
votes
0answers
38 views

Does expanding capacity of RAID 5 format all the drives?

I currently have three drives installed in My Cloud EX4 configured to RAID 5. However I would like to install one more drive. The only way to be able to use all of these drives is by selecting "Expand ...
3
votes
1answer
101 views

Migrate non-redundant data to larger disk on Synology NAS

I have a Synology DS213j using two disks I had to spare, 2TB and 1.5TB. These are nearly full so I plan to replace them. To put all data onto the new disks I just wanted to connect the old disks to my ...
0
votes
0answers
40 views

mSATA SSD + 2.5" SSD RAID

I was recently given a an Alienware M17x as a birthday present. The thing is a damn powerhouse lol. Anyways, I was thinking of getting rid of my desktop now since this laptop does everything it can ...
1
vote
2answers
61 views

Recommended RAID Mode for Small NAS Array

I am interested in purchasing a NAS array as a home server, and I am looking at currently 4x2TB drives in a 4-bay Netgear ReadyNAS array. I understand that RAID is not a backup and am will be backing ...
0
votes
2answers
108 views

Reduce RAID 5 NAS size (and number of disks)

We setup a QNAP TS451 recently in RAID 5 out of the box with 4x4TB HDs. It's turned out to be too much space and I'm interested in reclaiming some of the 4TB drives to use elsewhere. Wondering about ...
-1
votes
2answers
47 views

How can I copy my hard disk to a RAID 10 array?

I would like to create a RAID 10 array on my PC. But since my target hard disk was purchased some time ago and there are newer models in the market, I want to create an array from brand new hard disks ...
1
vote
1answer
1k views

Windows 10 Storage Spaces Poor Speed

Using Storage Spaces under Windows 10 Pro, I am observing poor, nonsensical speed. A two-way mirror and a simple space across four drives on 2012R2 and 2016TP produce completely different performance ...
0
votes
0answers
24 views

Is this hard disk setup possible?

I'm trying to determine if this hard disk setup is possible with what I have. Goal: 1 SSD running OS(s) 2 (2TB 7200rpm) drives in raid 1 2 (6T 5900rpm) drives in raid 1 I currently have: 890GXM-...
0
votes
1answer
180 views

Hard drive requirments for a home NAS Streaming (Plex) server

I plan to build this server to store my Blu-Ray rips, personal photos and music. My original plan was to install Ubuntu but now I plan to run Windows Server 2012 R2 - Datacenter, I get it for free as ...
1
vote
1answer
42 views

Writing/reading data while rebuilding RAID array

I understand its best to limit disk activity as much as possible during a RAID rebuild/resync to reduce the risk of data loss and to prevent slowing down the rebuild process by adding more activity. ...
1
vote
1answer
54 views

Doing system backups by rotating the removal of a disk from a 3 disk RAID 1 system

Is it possible to create a system backup by creating a RAID 1 array of 3 disks with 1 of the disks always not connected to the system? Overall Procedure: Insert disks 1 & 2 into computer, ...
0
votes
1answer
44 views

Raid Controller Write-Back Cache Behavior

I am trying to understand how it is that the write-back cache on a raid controller can continue to yield a benefit while you're writing a huge random dataset. Let me first say that I understand how a ...
0
votes
1answer
88 views

Boot issue after restore to RAID and adding external HDD. Windows 7 Pro

Background info: I ran into an issue Ghosting a PC. The PC I am on is an HPZ440 Workstation, the PC has 3 hard drives. One SSD connected via PCIe and two SSDs connected via SATA and configured as a ...
0
votes
0answers
40 views

Intel RST/SRT: SSD-Cached Raid but OS on another SSD

I plan to setup my new Computer with a SSD cached HDD Raid 1. Like I understand RST/SRT I have to install the OS on the HDD then. Is it possible to install it on another SSD also? I've currently got: ...