RAID 10 is a combination of RAID 1 and RAID 0. RAID 10 can also be referred as RAID 1+0
1
vote
1answer
307 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 ...
1
vote
1answer
200 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 ...
1
vote
1answer
192 views
Windows Software Raid 0 over hardware raid 1 does this equal a hybrid 1+0?
I've got a server running windows 2008R2. The hardware controller can only do Raid 1 or 0 and it's hotswappable. I have 4 drives (hot swappable hardware), each pair is mirrored (raid 1). I'd like to ...
1
vote
2answers
622 views
Raid 10 read speed does not scale with disk addition
We have 2 Dell boxes with the Perc H700 Raid Controller.
One box has 6 x 600G disks configured as a single Raid 10 volume
The other box has 12 x 600G disks configured as a single Raid 10 volume
I ...
1
vote
0answers
30 views
What RAID policies should be used for a XenServer host?
I have a server with a PERC6/i card and a RAID-10 array running XenServer 6.1 with 6x VMs, one of which is SBS 2008 and the rest are a mix of file server, video-on-demand and SQL database server.
The ...
1
vote
0answers
35 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 ...
1
vote
1answer
102 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, ...
1
vote
1answer
103 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 ...
1
vote
0answers
145 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 ...
1
vote
1answer
49 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 ...
1
vote
0answers
62 views
General software RAID operation question
I'm using dmraid on Ubuntu Maverick, and I am trying out some tests using RAID10 - I would like to confirm if I should be seeing the following:
When I cause one RAID member disk to fail (so I've got ...
1
vote
1answer
721 views
Rebuilding a dmraid RAID10 array
Q: How do I force a rebuild? The following describes the scenario.
I've been experimenting with forcing a RAID10 to rebuild, so I could see what dmsetup status output should look like when a RAID is ...
0
votes
3answers
322 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 ...
0
votes
3answers
402 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?
...
0
votes
5answers
519 views
Mirrored and stripped HD drives in Raid10
I have ubuntu server 10.04 installed on a Raid10 array (MD) using 4 HD drives.
As it is known, Raid10 is Raid 1 + Raid 0. So, two HD drives are stripped and they are mirrored (or the other way ...
0
votes
4answers
491 views
SQL Server: One 12-drive RAID-10 array or 2 arrays of 8-drives and 4-drives
Setting up a box for SQL Server 2008, which would give the best performance (heavy OLTP)? The more drives in a RAID-10 array the better performance, but will losing 4 drives to dedicate them to the ...
0
votes
3answers
86 views
Convert RAID 5 to RAID 10 without data loss
I have a Windows SBS 2011 server on a Dell R610 with RAID 5 configuration [3 disk].
Is there a way to convert it to RAID 10[4 or 6 disk] without losing anything or needing to re-install the whole OS ...
0
votes
1answer
222 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] ...
0
votes
1answer
140 views
Switching from Raid1 to Raid10
we are running a Dell Server with a PERC5i Raid card using a Raid1 setup. Now we are hitting a performance problem with our harddrive performance and think about switching to Raid10.
Which steps are ...
0
votes
2answers
980 views
RAID 10, how layout works? [duplicate]
Possible Duplicate:
Can someone explain the physical architecture of RAID 10 in complete layman's terms?
I'm trying to figure out how exactly works the RAID 10 in linux with mdadm.
I ...
0
votes
1answer
84 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 ...
0
votes
1answer
92 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 - ...
0
votes
3answers
194 views
RAID Planning for server
I'm trying to do some RAID planning, and the only RAID systems I've worked with in RAID-1.
I'm going to be setting up a RAID-10 server.
Could it make sense to have the primary hard drive with a ...
0
votes
1answer
145 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 ...
0
votes
1answer
158 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 ...
0
votes
2answers
26 views
Increase the size of software RAID 10
Currently I have 8 disks each of size 32G forming a RAID 10. Now, I want to increase the size of this RAID by adding extra disks. This is a production device so there is already critical data in the ...
0
votes
1answer
41 views
recovering from raid 10 single disk failiure
I got a terastation with 4 disks in raid 10 setup. But one of them failed recently. Instead of inserting the disk and restructuring is it possible to copy the data to another disk outside the ...
0
votes
1answer
197 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 ...
0
votes
1answer
119 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 ...
0
votes
1answer
117 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 ...
0
votes
1answer
257 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. ...
0
votes
1answer
69 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 ...
0
votes
4answers
931 views
How to (hardware) RAID 10 on Ubuntu 10.04 LTS with 4 drives and motherboard with RAID contoller
I have 4 500GB hard drives.
I set up a RAID 10 in BIOS, much like shown here:
http://www.supermicro.com/manuals/other/RAID_SATA_ESB2.pdf
Then I followed these instructions:
...
0
votes
1answer
402 views
RAID 10 software from the install with Centos 5.5
I'm downloading right now the Centos 5 DVD.
Is there any way to install it on 4 HDs (2Tb)?
Thank you a lot!
0
votes
0answers
40 views
LSI and CacheCade Optimisation
I'm just testing a testing a OpenVZ server with following HDD setup:
LSI9260-8i+BBU
6 x 2TB WD RE4
2x 120GB Intel 520 SSD - CacheCade
CacheCade VD:
RAID Level : Primary-1, Secondary-0
State ...
0
votes
0answers
31 views
How to upgrade raid10 disks to bigger size? [duplicate]
I dont have extra server. Server is in IDC.
I have centos 5 OS installed.
with RAID bus controller: Adaptec AAC-RAID (rev 02) controller (Adaptec 4000SAS)
4 disks x 74gb sas 15k
no LVM
filesystem ...
0
votes
1answer
68 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.
...
0
votes
1answer
51 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 ...
0
votes
0answers
97 views
What RAID level for a backup server?
I'm building a server with 12 x 3TB disks to use daily backups. I'm thinking to use RAID50 to get a good 27TB usable space.
The disks will be used brutally to backup 9 servers with 1.5TB of data once ...
0
votes
1answer
194 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
votes
1answer
332 views
Hard Drive chugging noise when moutning Logical Volume to file system
I have a server (Ubuntu 11.04) with a RAID 10 array (4 disks), and the RAID 10 array is partitioned as one big LVM. I have a logical volume on that which is 40GB that holds the root file system. The ...
0
votes
1answer
449 views
How can I recover data from two good disks in a RAID 10?
I have a Lacie Ethernet RAID disk NAS box. I configured the 4 disks in a RAID 10 config. The Lacie unit will not let me make CIFS connections to the box stating "Shared Folders: Not Ready" but I can ...
0
votes
1answer
561 views
Zero-channel RAID for High Performance MySQL Server (IBM ServeRAID 8k) : Any Experience/Recommendation?
We are getting this IBM rack mount server and it has this IBM ServeRAID8k storage controller with Zero-Channel RAID and 256MB battery backed cache. It can support RAID 10 which we need for our high ...
-1
votes
7answers
522 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 ...
-1
votes
2answers
52 views
upgrade windows server from 2003 to 2008
My PowerEdge 2900 server currently is a windows server 2003 thats configured as a RAID 5 Using PERC 6/i Integrated with 3 750GB Disks. Whats the best way or, the order of steps to upgrade it to ...
-1
votes
2answers
113 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 ...
-1
votes
1answer
145 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 ...
-1
votes
3answers
97 views
Raid 0, Raid 1, Raid 5, Raid6, Raid 10 Read/Write performance? [duplicate]
Assume a single disk has a baseline of 1W & 1R performance, how does the different RAID configurations behave?
My initial guess:
Raid 0: 2W 2R
Raid 1: 1W 2R
Raid 5: ? ?
Raid 6: ? ?
Raid 10: ...
-2
votes
2answers
782 views
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 ...
-2
votes
2answers
68 views
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 ...
