RAID 10 is a combination of RAID 1 and RAID 0. RAID 10 can also be referred as RAID 1+0

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server load extremely high trying to diagnose [closed]

The server load is extremely high. I'm trying to diagnose what's going on. Screenshot attached. edit: OS is CentOS 5. Not running anything like plesk or cpanel, etc.. The raid10 has 1 failed ...
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1answer
505 views

Capacity Expansion on PERCH700 RAID-10

I have Dell Poweredge R710 server with PERC H700 Integrated RAID controller. Currently there are 4 SAS 300GB disks in RAID-10 array exposing single volume of 600GB. Server is running VMware ESXi 5.1. ...
2
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1answer
77 views

Update RAID 10 NAS storage

I've got a NAS with 4x500GB HDD in RAID 10. I want to change the actual HDDs to others of 1TB capacity, but I want (if possible) to preserve the data without having to copy it outside the NAS. The NAS ...
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2answers
2k views

One drive failed in my RAID 1+0 array, am I safe to replace it without losing data? [duplicate]

The first drive in my 1+0 RAID array is showing a status of predictive failure. There are two drives in the array; is it safe to replace this without losing any data? I will be replacing it with the ...
2
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1answer
336 views

Raid-10 - how many disks should i span for read performance?

We manage a mid-sized array of images (4kb -> 1mb or so) using DAS hardware that is NFS exported to various webservers. We have traditionally used raid5 for the safety-net and storage-gains, rather ...
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0answers
50 views

Is it possible to modify the raid volumes once the OS is installed? RAID10 Windows Server 2008

My problem is the following: I've rented a dedicated server with RAID10, but they have set only one volume in raid -> Disk0. The Disk0 has 12 Tbs but with MBR i can only use the OS partition 100Gb ...
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1answer
155 views

Server with RAID10 basic partition management

First of all i must say that i'm totally noob to server management. I've rented a server with 8x3TB HDs and RAID10 installed. In the Disk Management section (I use windows server) i see two ...
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1answer
280 views

Linux software RAID 10 array, failed drive, resize file system and migrate to a 3 drive RAID 1?

I have a software RAID 10 array which I recently noticed went into a degraded state. The OS is CentOS 5.8. It has 4x 500GB drives in 3 different arrays: /dev/md0 is RAID 1 and mounted to /boot (200MB ...
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1answer
581 views

Device in software RAID 10 array: clean, degraded. Ouch?

I've got 4x 500GB drives in software RAID. /dev/md0 is RAID 1 and mounted to /boot /dev/md1 is RAID 10 and is swap /dev/md2 is RAID 10 and is the main system and data device I looked at mdadm this ...
3
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1answer
981 views

Rebuilding RAID 10 array with two failed drives

I have dedicated server with 4 HDD in hardware RAID 10 configuration and It worked fine until yesterday, when It started to crash randomly on couple minutes. I’ve contacted my data center and they’ve ...
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1answer
2k views

RAID 10: SPAN 2 vs SPAN 4

I am currently configuring RAID 10 (first time doing RAID ever) for a server at work. In the Configuration Utility. I am given the option of either span 2 or span 4. Having never done this before, I ...
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1answer
666 views

Software Raid 10 corrupted superblock after dual disk failure, how do I recover it?

I have a software raid 10 with 6 x 2tb hard drives (raid 1 for /boot), ubuntu 10.04 is the os. I had a raid controller failure that put 2 drives out of sync, crashed the system and initially the os ...
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1answer
383 views

Raid 10 - Very slow [closed]

I have Software Raid 10 setup, it has been working great a few months. When I did a quick HD speed test: dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync It is taking forever and I had to ...
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1answer
219 views

FreeBSD 9 (amd64) reboot/shutdown process is very slow

I have a Dell Poweredge 2900 III with FreeBSD 9 (amd64), the server uses mfi wich handles a raid10, I had to reboot the server, but notice that either when rebooting or shutting down the server, ...
0
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1answer
285 views

How to re-add a RAID-10 failed drive on Ubuntu?

I have a problem that I can't seem to solve. We have a Ubuntu server setup with RAID-10 and two of the drives dropped out of the array. When I try to re-add them using the following command: mdadm ...
0
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1answer
312 views

create raid10 with lvm

I came across an error when I create RAID10 with LVM2. I have four PVs and when I create LV using this command: sudo lvcreate --mirrors 1 --stripes 2 -l7630 -n lv0 vg0 --corelog display the VG, it ...
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1answer
105 views

RAID 10 — still a little unclear on the concept [duplicate]

Possible Duplicate: What are the different widely used RAID levels and when should I consider them? I haven't had any trouble building mental images of the simpler RAID forms, but for some ...
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3answers
963 views

RAID 10 or RAID 50 on 16x 900 GB 10K SFF disks

What type of RAID would you recommend for a single storage segment across 16 of 900 GB 10K SAS SFF disks on an EMC VNX 5100 storage unit? Disk 17 is a hot-spare. RAID 10, RAID 50 or something else? ...
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1answer
596 views

raid10 in mdadm reports incorrect “Used Dev Size”

I previously had a raid5 with mdadm using four 2TB drives. I've recently disassembled the raid and created a raid10 with six 2TB drives, but mdadm --detail is showing "Used Dev Size" as only 2TB (the ...
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1answer
119 views

Building hybrid RAID10 + RAID5 environment

I have the following configuration: simple video surveillance system (server 1: recording past 24h; server 2: recording past 30 days). I am primarily using the content on the 24h storage, while I ...
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1answer
219 views

Poweredge R710 configuring RAID 10 with one disk missing

I have ordered Poweredge R710 server with 4 diskas planning to configure them as RAID10. However I only got 3 disks delivered (4th will be delivered in 10 days). I am wondering can I create RAID10 ...
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0answers
173 views

four-disk md raid10-far can be assembled and ran as “clean, degraded” with only 2 disks. Bug or i'm missing something?

Today i was solving raid failure on raid10-far with four disks. One disk failed and another wasn't re-added after a hard reboot. The mdadm -D was reporting it's clean and running with only two out of ...
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3answers
812 views

perfmon reporting higher IOPs than possible?

We created a monitoring report for IOPs on performance counters using Disk reads/sec and Disk writes/sec on four servers (physical boxes, no virtualization) that have 4x 15k 146GB SAS drives in RAID10 ...
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1answer
187 views

Maxed out disk space on RAID10. Thoughts on moving forward?

I have (4) 146GB HDD set to a RAID10 on one server. I have now run out of disk space and I would like to increase it, however, I do not have any available slots to install more HDD's and no available ...
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0answers
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Calculating correct stripe size for Linux mdadm RAID10 arrays in “far” layout

I'm creating RAID10 array from 6 drives. When created in near layout, e.g. mdadm --create /dev/md2 --chunk=64 --level=10 --raid-devices=6 --layout=n2 /dev/sda1 ... Checking stripe size as ...
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3answers
168 views

Is this a possible/good RAID setup?

Earlier this week, one drive in our office's 2-year-old RAID5 array (4x 750GB Seagate drives, HP ProLiant 110 with Smart Array controller, running Windows Server 2003) failed. From what I know, RAID5 ...
4
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1answer
240 views

Possible to migrate RAID 10 system from 2TB Seagate to 2TB WD?

A couple of our servers have ST32000641AS (2TB Seagate desktop drives) in RAID 10 using an Adaptec 2405 controller. I've been told by Adaptec that this is a bad idea and we have, in fact, already ...
4
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1answer
343 views

How to recreate a RAID 10 array with mdadm

So our virtual machine has broken (it's actually a Linux machine in Azure) on which we were running a RAID10 array of 4 disks. It's an ubuntu box. From what I can tell the four data disks are fine, ...
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7answers
744 views

Which RAID/LVM configuration for new 2x8TB file server is safest?

I just built a totally new PC to be a fileserver. It has one 60gb SSD for OS (ubuntu 12.04), and 8 2tb data drives in it. I am looking for the safest, most stable way to set up a single giant ...
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1answer
138 views

How to rebuild my NAS

Today I have a QNAP TS-859U+ with 8 X 2TB disks in it. As it's was setup on day-1 it uses a single volume on a raid 5. The volume has currently a mixture of: 2 shared folders 5 iScsi Targets - ...
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2answers
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RAID 10 vs RAID 1 SSDs [closed]

I'm considering moving a large database from mechanical disks to SSDs. My initial instinct was to go for RAID 10, but further research suggests that this configuration can significantly reduce the ...
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1answer
214 views

Installing Solaris 10 on sunT5220 - ZFS/UFS raid 10?

I am in a bit of a time crunch, and need to get two T5220's built. We were very happy to see two boxes in our aged inventory which had 8 HDD's each, but didn't think to check if they were running ...
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1answer
57 views

Shared storage solution for our sql server backups

We have 3 clustered sql servers. We have 5+ multi terrabyte databases and their backup files (compressed using quest litespeed) are hitting over 600gb each, We are required to keep at least a week or ...
0
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1answer
484 views

Can't re-mount existing RAID10 on Ubuntu

I saw similar questions, but didn't find what solution to my problem. After power-cut, one of RAID10 (4 disks were) appears to be malfunctioning. I make tha array active one, but can not mount it. ...
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3answers
878 views

EBS+RAID10+XFS slower than EBS+RAID10+EXT3 using MySQL?

We're currently using EC2 with 16 EBS volumes in RAID10 configuration for our MySQL data. I know some people don't recommend to put EBS volumes to RAID but that's not what I'm concerned about at the ...
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2answers
831 views

6 Disk Raid 1+0

I have an HP Smart Array P400i raid controller, with 6 disks, working in a RAID 1+0. This is what it looks like: Mirror Group 0: physicaldrive 1I:1:1 (port 1I:box 1:bay 1, SAS, 72 GB, ...
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1answer
177 views

Does linux software raid10 perform any data verification on each write?

I wand to find out is there any benefit in safety of storage data between manual sync(using cron & rsync) of two RAID0 volumes and RAID10 volume using Linux software raid. Does RAID10 preform any ...
2
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3answers
1k views

Can I convert a raid10 array to raid0?

I have created a raid10 array using mdadm. Metadata version is 1.2. I want to convert this to a raid0 array, is it possible? P.S. I am having terabytes of data, I want to avoid copying the data over. ...
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3answers
439 views

large RAID 10 vs small RAID1

The machine will store and serve millions of small files (<15Kb each), and all those files require a total storage space of 400G Considering the exact same SATA hard drives maker and models, on the ...
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2answers
621 views

Software Raid 10 on VirtualBox?

I want to learn how to use Software Raid 10, is it possible to use VirtualBox by adding four storage images? This is my plan: 4x 100mb partitions (1 on each drive) configured as a raid 1 for ...
6
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1answer
4k views

Why has VMWare ESXi 5 slow access to IBM M1015 / LSI 9240-8i RAID?

I am building server for virtualization and wanted to go with VMWare ESXi 5. I configured RAID10 on 4 disks connected to internal RAID controller IBM M1015 (identical to LSI 9240-8i) and installed ...
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1answer
789 views

does the *physical* order/location of drives in a mdadm-managed RAID-10 array matter?

i've setup a 4-drive RAID-10 array using mdadm-managed, software-raid on an x86_64 box. it'd up & running and works as expected, cat /proc/mdstat md127 : active raid10 sdc2[2] sdd2[3] ...
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1answer
283 views

Server Config Software Raid Slow Read

I have 6x WD Caviar Black 1,5 TB in Software RAID 10 / 1 / 0 (Centos 6.2 / mdadm) cat /proc/mdstat Personalities : [raid10] [raid0] [raid1] md0 : active raid1 sdf2[5] sda2[0] sdb2[1] sdd2[3] sdc2[2] ...
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0answers
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How do I create a RAID10 array using EBS on Amazon?

Basing this question on information I got in Why does df shows only half the size of a RAID10 array?, how should I create a RAID10 array using EBS volumes on Amazon, in a way that will not be ...
2
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1answer
964 views

Estimate the IOPS in RAID 10

According to http://en.wikipedia.org/wiki/IOPS For example SAS disks provide ~200 IOPS each. For RAID 10 consisting of 4 such disks. How much IOPS I could expect for that array? I would think it ...
9
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1answer
736 views

Why does df shows only half the size of a RAID10 array?

I've created a RAID10 array using 4 75G drives, to create a storage of 150G. After everything finished (including the initial syncing), everything looked good except the output of df -h which showed ...
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2answers
1k views

Software Implementation of RAID 10 on a Windows Server 2008 running on Amazon EC2

Does anyone know of a software implementation of RAID 10 that will work on a Windows Server 2008? Specifically I'd like to use it on a virtual instance running on Amazon's EC2, connected to EBS ...
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2answers
582 views

RAID10 volume write latency on Windows on ESXi 5

I have a VMware ESXi 5 environment running on Fujitsu BX922S2 blade servers, connecting to a Fujitsu DX90 SAN. I've had no problem with RAID5 volumes, but RAID10 volumes (for MSSQL) are exhibiting ...
2
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1answer
485 views

RAID 10 or RAID 1 x 2 for Hyper-V with AD, EXCHANGE on Windows 2008 R2

We have 2 servers which have 6 SATA 7200 disks inside (each). We want to configure both servers so that they will have Window Server 2008 R2 Enterprise installed and on top of it Exchange 2010 x2 (for ...
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1answer
73 views

RAID 1+0 redundancy and data-loss recovery capability against RAID 1

I have a HP ProLiant server with two SCSI drives. I wanted to set up a RAID 1 array but the RAID configurator only allowed me a RAID 0 or a RAID 1+0 array. When either of my drive fails can I recover ...