Stack Exchange Network

Stack Exchange network consists of 175 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-10]

RAID (Redundant Array of Individual Disks) 10 is useful for both speed and redundancy

3
votes
0answers
102 views

Metadata of the assambled raid inconsistent with the metadata of the individual drives?

We have a raid 10 with two failed drives, with one drive from each set still functional. When booting into rescue system the metadata seems to be fine and consistent with the expected state. The ...
0
votes
0answers
19 views

Reassemble RAID10 after install

My system drive broke so I have lost the software RAID10 I had. Is there any way to reassemble the RAID10 when I have installed a new system? I ran Ubuntu server 17.10.1, aiming to do the same again.
2
votes
2answers
757 views

ZFS RAID 10 pool with mixed disks size

I have 4 disks: 2x2TB and 2x1TB. All of the same RPM 7200 and manufacturer. OS is Ubuntu 16.04. I want to make a RAID 10 pool, but I've heard that mixing disks size is not a good approach to ZFS - ...
1
vote
1answer
72 views

How to increase storage space in a RAID 10?

So Lets say that I have a server running on 4 hard drives... We have them in a RAID 10 setup and they are all 600GB. Now I take one of them out, then swap it physically with a 1.2TB HDD. In this ...
0
votes
1answer
588 views

My RAID 10 Array has corrupted, how do I get back my data?

I have a server with 4 drives in a RAID 10 array. Recently my server was down with the Array not detecting the drives. Only a single drive is currently being seen by the RAID card while a second ...
0
votes
1answer
402 views

On an HP proliant DL380 G9 with P840 RAID10 vs mdadm RAID10

On an HP proliant DL380 g9 with smartarray P840, I have a ubuntu 17.04 vm acting as an ownCloud server. Does it make difference if I use a HW RAID10 instead of mdadm RAID10? Is there any data that ...
0
votes
1answer
320 views

difference between SSD RAID10 and number of SATA3 RAID 10

I want to order a dedicated server, Its a powerful server using 2 x CPU and 128 GB RAM I can choose between 2 following combination for Hard Disk: 4 x SSD 480GB (Raid 10) 12 x SATA3 3TB (Raid 10) ...
2
votes
1answer
50 views

Am I OK to replace motherboard and add new RAID card with this RAID setup?

This post here: New motherboard or new PC to gain access to RAID drives Suggests that if I am using a software raid, I can swap out the motherboard with no issue as long as I am using the same OS. ...
0
votes
2answers
881 views

Understanding how a hardware RAID controller works

I am currently looking at a specific product: https://www.amazon.com/gp/product/B004JPUZWU/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 This is a hardware RAID controller and I just want to ...
1
vote
2answers
3k views

Smart Array RAID-10 with SSD drives under-performing?

I have a ProLiant DL380 Gen9 server with a HP Smart Array P440ar controller and HP MO0400JEFPA 400GB SAS SSD drives. The server is meant to host a write intensive database so I'm particularly ...
0
votes
1answer
948 views

RAID10 with 2 disks with far2 layout

RAID10 with 2 disks is reliable with far2 layout? Will it provide fault tolerance in case of one hard disk failure? Any advantage over plain RAID1?
0
votes
1answer
65 views

Software RAID0+1 using 3 disks

Is it possible to use mdadm to do RAID0+1 using 3 disks? My scenario is 1x2TB disk and 2x1TB disks. Not interested in the RAID0 performance boost, just want to combine them so I can mirror them with ...
2
votes
2answers
145 views

Can you move a RAID from a dedicated controller to on-board motherboard raid?

So currently I have a very old raid card that I have 4 drives attached to because at the time my Mobo did not have enough sata ports. Now much later I have a new motherboard and the raid controller ...
4
votes
1answer
6k views

How many drives can I safely lose in a RAID-10 array?

In a 4-drive RAID-10 setup, how many drives can I "safely" lose before the data becomes unrecoverable? It's a bit unclear to me whether the setup provides one drive or two drives worth of redundancy. ...
1
vote
0answers
1k views

Configuring RAID10 with 6 drives on LSI Megaraid using storcli

I got a LSI 9271 card and 6 drives I want to add in RAID10 configuration - 3 spans of RAID1 to be exact. All of the documentation shows the procedure via WebBIOS creating 3 DGs and spanning them. The ...
-1
votes
2answers
383 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 ...
2
votes
3answers
101 views

How is Data Recovered when a RAID array fails

I am thinking of using hardware RAID (levels 5 and 10) on my computers. What I don't get is how is data recovered when something goes bad and the RAID array fails (RAID Card problem or anything else). ...
4
votes
2answers
26k views

Minimum number of hard drives needed for RAID 10?

I would like to build a home file server running Windows Server 2012, with WD Red hard drives configured in RAID 10. What is the least number of these hard drives I need to purchase to be able to ...
0
votes
1answer
528 views

Alternative to RAID 10

With 6 drives in RAID 10 one will get 3 drives effective storage and 3 redundant drives, so in a best case scenario up to 3 drives can fail without loosing any data. But in a worst case scenario (now ...
0
votes
1answer
751 views

RAID10 Recovery

I had a RAID10 array fail a few nights ago, I have to admit that I am fairly lost on all of this. I have googled this extensively and I don't understand what is going on. If anyone here can provide ...
0
votes
2answers
1k views

How to fit 12 drives onto a server motherboard

I am thinking of building a cheap home server and found a server chassis which holds 12 SATA drives. I'm looking at this motherboard, but I am having a hard time understanding how to fit 12 drives ...
8
votes
5answers
8k views

Need to find which drives are mirrored within RAID-10 array

I have a home media server running on openSUSE 12.2. I'm using eight 2TB drives in a RAID-10 configuration. I deliberately bought two different types of drives: four Seagate Barracuda Green and four ...
1
vote
1answer
2k views

Linux raid10 on btrfs

I've read that BTRFS requires at least 4 disks (https://btrfs.wiki.kernel.org/index.php/Using_Btrfs_with_Multiple_Devices). Indeed, Linux mdadm raid10 requires only 2 disks (http://en.wikipedia.org/...
1
vote
1answer
205 views

How to grow an EBS mdadm raid 10 array?

Is it possible to grow a RAID 10 array? Can I take it offline and grow it? Or do I have to make an entirely new array, and copy all the data onto it?
1
vote
1answer
472 views

How to move a windows machine properly from RAID 1 to raid 10?

Goal I would like to add two more hard drives to my current RAID 1 setup and create a RAID 0 setup on top of the two RAID 1 setups (which I believe is referred to as "RAID 10"). Components Involved ...
0
votes
2answers
3k views

What are the theoretical performance differences between a single disk and a RAID-10 array?

Not taking hardware RAID cards into account, what kind of theoretical performance improvements should I see when using 4 disks in a RAID-10 array vs 1 disk by itself? For example, on RAID-0, I would ...
5
votes
2answers
2k views

Fault tolerant RAID6 / RAID10 design for home server - not performance critical

I want to balance disk space against fault tolerance. I would like fault tolerance to be able to handle multiple disk failures (as I may not be able to afford replacements disks or have the time for ...
2
votes
3answers
1k views

RAID on Solid State Drives

Are there any notable differences, other than (awesome) performance, when running RAID arrays made up of solid state drives? I'm considering one of the two: 4 x 256GB SSD in RAID-10 (total usable ...
3
votes
3answers
1k views

RAID 0 + 1 with 3HDD 2x1TB + 1x2TB

Is it possible to make RAID 0 + 1 with 3 Hard Drives I have currently setup raid 0 with 2x~1TB HDD (1.8TB approx) Now i got 2TB HDD (1.9TB approx) which i want to be as a mirror drive. Is is ...
10
votes
6answers
20k views

Adding drives to a RAID 10 Array

How would I grow a RAID10 array using mdadm? Obviously I would need to add 2 drives at a time, or would it have to be 4 drives? I have a feeling its just a bad idea. Or would be just wiser to just ...
0
votes
3answers
308 views

Which is the better MacPro to get — hardware RAID of SATA or good 256GB SATA SSD?

Looking to build a MacPro. Reliability question aside, what's a good option? I feel that if I purchased the RAID option, it should be in the RAID10 configuration -- spinning media needs the ...