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
0answers
11 views

Need to parse error logs and set up an alert system on a remote Windows computer

All I need to set up an alert system that can tell me when a hard drive has failed in a remote computer system. I manage approximately ~10 Windows 7 machines and they all have LSI RAID cards with 3+ ...
0
votes
0answers
9 views

M2 SSD For OS and 2 x SSD for general usgage - can i create redundancy here for the os?

i was getting a little confused reading through the site, as i am new to raid etc, what i wanted to do was use a m2 ssd for the os and 2 ssd drives for NON os creation, ultimatley can i create a ...
0
votes
0answers
8 views

RAID 6 Resync after system crash

I am running a home NAS server for data storage using linux (ubuntu) and RAID 6 configuration (using MDADM), however, occasionally the server crashes/hangs or experience a power-outage/interruption of ...
30
votes
7answers
65k views

How can I make mdadm auto-assemble RAID after each boot?

I successfully created a RAID (mirroring) by utilizing mdadm. However, I must run the following commands after each boot: mdadm --stop --scan // to stop /dev/md127 - I don't know where the number 127 ...
1
vote
1answer
8 views

Adding a parity drive to a RAID-Z1 array

Can I create an array as a RAID-Z1 and then later add another pairity drive to make it into a RAID-Z2? I’ve got 4TB of data on a drive I’d like to add into an array that I’m building out of fresh ...
0
votes
0answers
30 views
+100

Linux mdadm does not assemble array, but recreation of array does it

Maybe i'm not very clear in the title. When i'm trying to assemble my raid1 array with mdadm: sudo mdadm --assemble /dev/md0 /dev/sdc /dev/sdd It tells me that mdadm: Cannot assemble mbr metadata ...
2
votes
2answers
912 views

Recover Linux software RAID5 array after server upgrade

I recently upgraded a server from Fedora 6 to Fedora 14. In addition to the main hard drive where the OS is installed, I have 3 1TB hard drives configured for RAID5 (via software). After the upgrade, ...
0
votes
0answers
26 views

Make fixed USB drives dynamic disk

So at the moment I'm trying to RAID0 a pair of USB sticks I have. They show up in Disk Manager as Fixed Disks because of some driver filtering and it allows me to create a new striped volume, but at ...
1
vote
0answers
12 views

Recover Data Using Synology NAS

I bought a Synology DS415play around 2 years ago, and plugged 3x 4TB hard drives into it and set them up as a Synology Hybrid RAID. I've been using it to store my media on it and haven't touched the ...
0
votes
1answer
3k views

Cloning HDDs from a hardware RAID array?

Is it possible to clone the individual disks of a hardware RAID to get a copy of the contained array? I have an Adaptec RAID controller. I put it offline, attached the RAID member HDDs to a regular ...
0
votes
0answers
34 views

Is using multiple SSDs in RAID 0 good for reliability?

I'm asking this because, unlike HDDs, the main lifetime limiting factor of an SSD is write cycles. By using RAID 0, it's effectively doubling the amount of write cycles usable, and theoretically ...
0
votes
0answers
9 views

mounting a RAID array on a machine with conflicting device name

I have a machine with the following RAID arrays connected: xxxx@xxxx:~$ sudo /sbin/mdadm --examine --scan ARRAY /dev/md/0 metadata=1.2 UUID=6c2e2072:4db41563:d93a9ae5:dfb29ffd name=xxxx:0 ARRAY ...
0
votes
0answers
10 views

Using storage spaces like raid 0 + mirroring?

I have a few drives I'd like to use but I'd get more space out of them if (this assumes its possible) I could set the two smaller drives up like raid zero, then have the "raid 0 drive" mirror a x3 ...
2
votes
3answers
9k views

Can I run multiple RAID arrays on a single RAID card?

I"m looking to buy a hardware RAID card for my Linux computer which I'm building, and I'm specifically considering this Intel model. I'm planning on running multiple RAID arrays in my computer: a ...
3
votes
2answers
4k views

Very slow volume expand on Synology ds2413+

I've posted this elsewhere on the internet aswell, and will obviously reply in both places if a proper solution is found. I am attempting to expand SHR volumne (2x4TB, 1x2TB) with additional 4TB ...
-2
votes
0answers
44 views

software RAID alternative with file-level striping (not block striping) [migrated]

Is there a software RAID alternative with file-level striping? I'd like the the total capacity of the disks in the set to sum up like in RAID-0, but i also want the individual disks to be still ...
0
votes
0answers
20 views

Failed Redundancy Error on Windows Server 2008 Mirrored Volume

So I helped a friend set up a home network. He has a Windows Server 2008 server with multiple disk drives set up. These drives are mirrored. Somewhat frequently the Failed Redundancy error pops up. ...
0
votes
0answers
28 views

Migrate MDADM array to another server with degraded state

I've been hacked few days again and, after analysis, I want to have my data back ! My previous server (the one who contains data on RAID1) have been compromised so I've decided to go with another ...
0
votes
1answer
711 views

Kubuntu 11.10: Random IO errors on HDD in RAID1 array. RMA time?

I'm pretty sure I have a failing HDD here, but just want to make sure it's not some software error before I do the whole RMA song and dance routine with Western Digital. Bascially, I have a <6 ...
1
vote
2answers
7k views

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 ...
0
votes
0answers
15 views

Does URE apply in non-RAID setups?

According to this article (http://www.zdnet.com/article/why-raid-5-stops-working-in-2009/) if you have a RAID 5 setup and one of your drives decides to die you would replace the dead one with a new ...
-2
votes
0answers
15 views

which raid is best for video storage?

I have total 16 500GB hard disks. which raid is better for maximum storage usage and safe data? I need 4 logical partition.please inform me how to do raid,as I am new to it.
1
vote
0answers
12 views

Deploying Raid 0 on an existing setup

I have a server that's already in deployment and will be adding on a new hard drive. Redeployment isn't really an option because the server is a quanta server and doesn't can't support a KVM. ...
1
vote
1answer
58 views

GA-Z170X-Gaming 7 or GA-Z170X-Gaming G1 (2x M.2 NVMe) + SATA

I have been considering building a new system with dual Samsung 950 NVMe SSDs and I am slightly confused about how the firmware on GIGABYTE supports this setup. Reading the manual for the Gaming ...
0
votes
1answer
55 views

Can Windows 7 make good (high performance) use of RAID 1 between a SSD and a HDD?

Recently my hard drive died, and I lost all my files and I am really sad. Right now I am making a software 1 raid between my 2250MBps/1850MBps Pcie 3 8x SSD, and my 1TB 170MBps/170MBps hard drive. ...
17
votes
3answers
15k views

Does software RAID 1 in Windows 7 improve read speeds?

Does software RAID 1 (mirroring) in Windows 7 improve read speeds? I'd like to set up RAID 1 to help protect my important documents (yes, yes, I know it's not a backup), but performance is also ...
0
votes
0answers
12 views

Raid 1 with motherboard change

I currently have 2 x 1Tb HDDs configured as Raid 1. I want to upgrade my mobo and processor but am worried about still wanting Raid 1 with the new mobo. Is this possible with HDDs loaded with data ...
0
votes
0answers
25 views

Unable to UEFI boot once RAID is enabled

I have the current drive setup. 1 SSD that holds windows, 2 smaller SSD's that are RAID0'd and 1 platter drive. When I installed windows 10, all was good and things were booting fine. After a BIOS ...
0
votes
1answer
6 views

AMD Raid 5 drive not accessible in windows

I'm running RAID 5 using the onboard AMD RAID controller. Until this afternoon I have successfully been running windows, but after a system freeze and reboot, Windows went to system repair. Diskpart ...
1
vote
1answer
6k views

Synology NAS station - how to mirror 2 HDD (Simple how-to)

I have the following problem with my Synology disk station: I had one small HDD in Synology Diskstation, so I removed it. I bought 2 new HDD with the same capacity. I transferred backup from old ...
0
votes
0answers
24 views

Does it make sense to create a raid array with SSD's?

We had a big problem in our local network at the school, many people were not able to login to their virtual machines. After a week our teachers found out that the problem was because of the raid ...
0
votes
0answers
39 views

Does Synology Hybrid RAID (SHR) have faster read/write speeds than a single HDD?

So I have 4 of the same drive (5400 RPM WD Red's) in SHR. Since there is data parity (same chunks of data exist on multiple drives), will the read speed be greater than that of a single drive? Could ...
-1
votes
0answers
38 views

Microsoft Remote Desktop not writing to external hard drives?

Alright, so I have a computer with data for my research (OS: Windows 8.1). To transfer the data, I use Microsoft Remote Desktop to make a connection from my work computer (Mac Pro, OSX 10.10.3). The ...
0
votes
0answers
19 views

Switching from 1 SSD and 1 HDD to 2 SSD in RAID 0 and HDD

Current system: Windows 10, 1 SSD, 1 HDD, SATA set to AHCI mode in BIOS. How to switch to booting from two new SSDs in RAID0 and HDD? If I change the SATA mode to RAID in BIOS and configure 2 new ...
1
vote
2answers
7k views

How to reinstall the Intel Matrix Storage Manager option ROM

I have a Dell Precision R5400 rack mount computer. It originally came with a the Intel Matrix Storage Manager option ROM installed. But then we decided to remove the RAID drives and replace them with ...
0
votes
0answers
11 views

Need help choosing a storage configuration for a GIS workstation

I am currently building a workstation for a GIS friend. I feel comfortable choosing all of the other specs but would like help choosing what to do for the storage. Original thought was to choose a ...
2
votes
2answers
1k views

How to re-do the hard disks in a WD Word Book Edition II?

I recently purchased a WD World Book II, a 2 TB one. I call it the "White Box". It has those 2 1TB drives, and they were in this RAID 1 config, only giving me about 1 TB. I could not delete the raid ...
2
votes
0answers
337 views

Reading or writing with a 4 WD5000AADS drive RAID 5 array drops to 0 speed

Edit, 10/31: Crash-- complete system lockup. Booted computer, had strange lag for visiting ANY webpage in Chrome.. Figured that either a network problem existed, or Chrome could not write to disk ...
1
vote
1answer
978 views

Western Digital My Book not recognized by WD software

A few years ago I bought a WD My Book Pro 2. It worked fine for a while, then one of the drives failed and I sent it back to be replaced under warranty. I never got around to setting up the new one ...
2
votes
0answers
445 views

Trying to rescue data from WD My Book Studio II, raid 0

For a friend I'm trying to recover data from a Western Digital My Book Studio II external disk drive enclosure in raid 0 mode. At first I tried to rescue the data under OSX, the OS used by the ...
2
votes
1answer
1k views

Access Western Digital My Book World II RAID array on my Ubuntu Linux

My WD My Book World II (Blue Rings) NAS has overheated, I think the motherboard is dead. I extracted the disks and plugged them in my desktop PC running Ubuntu Linux. The disks seems to be alive, ...
2
votes
4answers
1k views

WD Caviar Green: Different RPMs, RAID5 suitable?

Currently I have a 3Ware 9500S-12 with two Caviar Green 1TB disks in RAID1. This isn't enough space, so I want to buy another two disks and run a RAID5. This isn't mission-critical (my media server, ...
0
votes
0answers
17 views

How to have SATA drives connected to an Intel RAID controller as removable drives

Hi: we have a Supermicro server with an Intel C600 series controller and we would like to use some of the ports and their disks as removable devices, to allow to copy media from one server to another. ...
0
votes
0answers
10 views

Install Ubuntu with PXELinux on Raid0 machine

I have built a server that give tha ability to install several Linux distro over the network. Everything works well but with Ubuntu 14.04. I used this guide : ...
4
votes
0answers
77 views

Size on disk way bigger than expected

I have read Why is there such a big difference between "Size" and "Size on disk"? but why is mine so different? My RAID5 is set at 128kb stripe, the volume is formatted at 64kb NTFS. I would expect ...
-1
votes
1answer
15 views

Protecting Data/Storage With a Better Data/Backup System

I've been putting up upgrading my system for data/storage/backups and I really want to deal with this as soon as possible. My Current System: Apple Macbook Pro (OS and Applications External Hard ...
0
votes
0answers
11 views

Former RAID 0 HDD not recognized (WD Red WD10EFRX)

I've bought two HDD drives (WD Red WD10EFRX) 1TB each and configured them to work in RAID 0 (stripe) on computer with Gigabyte motherboard. After that, I've decided to use them separately on another ...
2
votes
1answer
375 views

Test RAID array read write speeds from boot disk

I have a VMware ESXi server with a local RAID 5 datastore formatted with VMFS. The RAID controller is a DELL PERC H710 hardware controller and the server is an R620. I get abysmal write speeds, ...
4
votes
8answers
13k views

Can someone explain RAID-0 in plain English?

I've heard about and read about RAID throughout the years and understand it theoretically as a way to help e.g. server PCs reduce the chance of data loss, but now I am buying a new PC which I want to ...
0
votes
1answer
138 views

Adaptec ASR-7805 bios password

I would like to set the password for Adaptec ASR-7805 BIOS utility, which you access by pressing CTRL+A, right when the system boots, in order to prevent possibility of unauthorized access for ...