Hardware :: Best RAID Monitoring Utility?

Jan 18, 2010

I am looking for recommendations on monitoring RAID array status in a "hardware RAID" setup (ie, using a RAID controller card or RAID-enabled motherboard).Here are some clarifying points:

1. OS is CentOS 5.
2. No drive lights are visible on the exterior of the system. So periodically checking for amber lights (indicating drive failure) is not an option.
3. No SNMP manager/collector is available. This question refers to local-system options. Not network-based options.

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Ubuntu :: Raid 5 In Disk Utility?

Jul 17, 2010

point me in the direction to get a step by step guide to setting up a Raid 5 using the Disk Utility and 3 spare drives? I have the main OS files on a 80gig drive and I would like to mount the 3 drives as Raid 5.Just shooting in the dark now.. Screen shot is attached. [URL]...

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Ubuntu :: RAID Via Disk Utility?

Jul 20, 2011

Has anybody ever used Disk Utility to set up software RAID? Here I am running terminal commands (I'm a terminal junkie) and I just happen to stumble across instructions that indicate "Or you can just set it up through Disk Utility."

Sure enough in disk utility, it looks like all of the configurable options are there. It makes me wonder, though... is this kind of GUI functionality something that isn't really solid? Or does it operate predictably and effectively?

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CentOS 5 :: Shell Script For Raid Monitoring?

Aug 30, 2011

shell script for raid monitoring?just to send email when the raid has errors.

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OpenSUSE Install :: Dmraid Vs Mdadm And RAID Status Monitoring?

Apr 22, 2011

I'm pretty new to FakeRAID vs JBOD in a software RAID, and could use some help/advice. I recently installed 11.4 on a brand new server system that I pieced together, using Intel RAID ICH10r on an ASUS P8P67 Evo board with 2500K Sandy Bridge CPU. I have two RAIDs setup, one RAID-1 mirror for the system drive and /home, and the other consists of four drives in RAID-5 for a /data mount.

Installing 11.4 seemed a bit problematic. I ran into this problem: [URL]... I magically got around it by installing from the live KDE version with all updates downloaded before the install. When prompted, I specified I would like to use mdadm (it asked me), however it proceeded to setup a dmraid. I suspect this is because I have fake raid enabled via the bios. Am I correct in this? Or should I still be able to use mdadm with bios raid setup?

Anyways, to make a long story short, I now have the server mostly running with dmraid installed vice mdadm. I have read many stories online that seem to indicate that dmraid is unreliable versus mdadm, especially when used with newer SATA drives like I happen to be using. Is it worth re-installing the OS with the drives in JBOD and then having mdadm configure a linux software raid? Are their massive implications one way or another on if I do or do not install mdadm or keep dmraid?

Finally, what could I use to monitor the health and status of a dmraid? mdadm seems to have it's own monitoring associated with it when I was glazing over the man pages.

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CentOS 5 :: Monitoring And Configuring AHCI On Board Hardware RAID?

Nov 26, 2009

I am using Centos 5.4 on an Intel DG451D Main Board. Two SATA drives in RAID1 mode via the main board's built in AHCI controller. It seems to work just fine but I would like to be able to monitor the state of my drives and controller, especially during a re-build and make configuration changes etc if possible, so new drives can be added etc from within the OS. Is there a way to do this within Centos or am I stuck with using just the BIOS configuration system? Apologies if this is a stupid question - I am pretty new to this and have spent several hours trying to find a solution to my question but to no avail.

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Ubuntu Servers :: Start The RAID Using "Disk Utility?

May 5, 2011

My system locked up while copying files last night. My RAID array will not start. I did verify my UUID's. (Lesson learned.) I do not understand a few things.1. Why do different drives show "active sync" on different drives? 2. Why does "Disk Utility" tell me the RAID is not running and when I try to assemble the RAID, mdadm returns: mdadm: device /dev/md0 already active - cannot assemble itWhen I try to start the RAID using "Disk Utility":

Code:
Error assembling array: mdadm exited with exit code 1: mdadm: cannot open device /dev/sdd1: Device or resource busy
mdadm: /dev/sdd1 has no superblock - assembly aborted
So, I examine sdd1:
Code:
sudo mdadm -E /dev/sdd1

[Code]...

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Fedora Hardware :: Motherboard Configuration - Raid Setup Utility Shows Drives Out Of Order

Sep 19, 2010

I just went out and bought stuff to build a new computer, and among the parts was a Gigabyte ga-890fxa-ud5 motherboard ([URL]). The board has 3 (well, 4, but we'll stick to the 3) main sata interfaces, with 2 slots per interface, allowing 6 sata drives. In slot_0 i put my blu-ray drive, in slot_1 i put my drive that will host the OS and its partitions, and that is in the sata connector pair on the left. The middle sata connector pair (slot_2 and slot_3) i have 2 2tb drives, and in the sata connector pair on the right (slot_4 and slot_5) i have 2 1.5tb drives.

[Code]....

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Ubuntu Servers :: Creation Of RAID-0 Array In Disk Utility Resulting In Smaller Than Expected Array?

Sep 27, 2010

I have a NETGEAR ReadyNAS NV+ with four 1TB drives in a RAID-5 array. This is our primary file storage. This has previously been backed up to a hardware RAID-0 array directly attached to our Windows server. The capacity of this backup array is no longer sufficient. So the plan was, take a bunch of 200GB to 320GB drives (And a 750) I had kicking around, chuck them in a couple of old SCSI drive enclosures I have collecting dust, attach them via IDA/SATA-to-USB adaptors to a USB hub, attach that to the server, create a JBOD array spanning the disks, and back up the NAS to that. Performance is not an issue as this is just to be used for backup, with the idea being as near to zero cost as possible (Spend so far = NZ$100�ish).

The first hurdle I struck was Windows not supporting Dynamic Disks on USB drives (Required to create a spanned volume). At first I resisted using another machine (i.e. a machine running Ubuntu) as I didn't want to dedicate a piece of hardware to backing up the NAS. I then decided it would be acceptable to do this via a VM, which is what I've done.So I have 10.04 running under VMWare Server 2.0.2 under Windows Server 2008 R2. The disks are all presented to the VM. I wasn't sure if I was going to end up creating the array under LVM or something else, but I noticed Disk Utility has an option to create an array, so I tried that. When I add two 250GB drives, the array size is 500GB. When I then add a 160GB drive, the array size drops to 480GB. Huh? If I keep adding disks (Regardless of order) the final array size comes out at 1.8 TB, as per the attached screenshot. Now with the following drives, I expected something more like:

160 + 250 + 250+ 750 + 250 +200 + 200 + 250 + 320 + 250 + 320 = 3.2TB

Am I missing something or making a false assumption somewhere?

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Ubuntu Installation :: Cpuid Utility Is Not Compiled With U9.04 And Utility Is Not Available As Package With Synaptic?

Feb 5, 2010

cpuid utility is not compiled with U9.04 and the utility is not available as a package with synaptic -
other distributions have it available as rpm . url

Any way to run this utility in the Debian world?

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Ubuntu Servers :: RAID-5 Recovery (spare/active) / Degraded And Can't Create Raid ,auto Stop Raid [md1]?

Feb 1, 2011

Could any RAID gurus kindly assist me on the following RAID-5 issue?I have an mdadm-created RAID5 array consisting of 4 discs. One of the discs was dropping out, so I decided to replace it. Somehow, this went terribly wrong and I succeeded in marking two of the drives as faulty, and the re-adding them as spare.

Now the array is (logically) no longer able to start:

mdadm: Not enough devices to start the array.Degraded and can't create RAID ,auto stop RAID [md1]

I was able to examine the disks though:

Code:
root@127.0.0.1:/etc# mdadm --examine /dev/sdb2
/dev/sdb2:
Magic : a92b4efc
Version : 00.90.00
code....

Code:
mdadm --create --assume-clean --level=5 --raid-devices=4 /dev/sda2 /dev/sdb2 /dev/sdc2 /dev/sdd2
As I don't want to ruin the maybe small chance I have left to rescue my data, I would like to hear the input of this wise community.

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Ubuntu :: Mdadm Raid + GRUB = Not Booting - Error: Unsupported RAID Version: 0.91

Jul 18, 2011

I have a raid5 on 10 disk, 750gb and it have worked fine with grub for a long time with ubuntu 10.04 lts. A couple of days ago I added a disk to the raid, growd it and then resized it.. BUT, I started the resize-process on a terminal on another computer, and after some time my girlfriend powered down that computer!
So the resize process cancelled in the middle and i couldn't acess any of the HDDs so I rebooted the server.

Now the problem, the system is not booting up, simple black with a blinking line. Used a rescue CD to boot it up, finised the resize-process and the raid seems to be working fine so I tried to boot normal again. Same problem. Rescue cd, updated grub, got several errors: error: unsupported RAID version: 0.91. I have tried to purge grub, grub-pc, grub commmon, removed /boot/grub and installed grub again. Same problem.

I have tried to erased mbr (# dd if=/dev/null of=/dev/sdX bs=446 count=1) on sda (ide disk, system), sdb (sata, new raid disk). Same problem. Removed and reinstalled ubuntu 11.04 and is now getting error: no such device: (hdd id). Again tried to reinstall grub on both sda and sdb, no luck. update-grub is still generating error about raid id 0.91 and is back on a blinking line on normal boot. When you'r resizeing a raid MDADM changed the ID from 0.90 to 0.91 to prevent something that happend happened. But since I have completed the resize-process MDADM have indeed changed the ID back to 0.90 on all disks.

I have also tried to follow a howto on a similar problem with a patch on [URL] But I cant compile, various error about dpkg. So my problem is, I cant get grub to work. It just gives me a blinking line and unsupported RAID version: 0.91.

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General :: Migrate An Installed Ubuntu System From A Software Raid To A Hardware Raid?

Jun 29, 2011

migrate an installed Ubuntu system from a software raid to a hardware raid on the same machine? how would you go about doing so?

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Server :: How Long Does Hardware Raid Card (raid 1) Take To Mirror 1 TB Drive (500gb Used)

Mar 22, 2011

How long does hardware Raid card (raid 1, 2 drives)take to mirror a 1 TB drive (500gb used)?Is there a general rule of thumb for this?4 hours? 12 hours? 24 hours?

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CentOS 5 Hardware :: Connect A RAID Box To The Server Via LSI 8880EM2 RAID Controller

Aug 3, 2010

I am trying to connect a RAID Box to the server via LSI 8880EM2 RAID controller.The raid box is FUjitsu Externus DX60 with raid 1 configured.The server is Fujitsu Primergy SX300 S5 with LSI 8880EM2 RAID card.The external raid box is being recognised by the raid controllers bios.

The server runs CentOS 5.5 64bit. I have installed the megaraid_sas driver from LSI website and MegaCLI utility but CentOS still fails to see the box.MegaCLI utility, when launched from CentOS, recognises the raid box, CentOS does not(no mapping being created in /dev).

I have also tried to create a logical RAID0 HDD on one physical HDD(as seen by MegaCLI) with MegaCLI utility in CentOS.The result was success and the new logical drive could have been used, but when restarting the server, the controllers' bios fails with an error (not surprised(one logical RAID0 on one physical HDD)) and configuration is being erased.

Has anyone tried connecting 8880EM2 controller to a raid box with raid configured on the box, running it all under CentOS and what were the results.

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Ubuntu Installation :: Dual Boot - Win 7 And 10.10 On Raid 0 - No Raid Detect

Nov 26, 2010

I have installed Ubuntu on my m1530 since 8.04 and currently dual boot Win7 and 10.10. I would like to dual boot on my PC, but I have run into a problem. I am not a pro at Ubuntu, but this problem I can not solve by reading forums like I have in the past.

I realize this is a common problem, but I have noticed people having success.

I have a M4A87TD EVO MB with two Seagate drives in Raid 0. (The raid controller is a SB850 on that MB) I use the raid utility to create the raid drive that Windows7x64 uses. I have 2 partitions and 1 unused space. Partition 1 is Windows, partition 2 is for media, and the remaining unused space is for Ubuntu.

I am running ubuntu-10.10-desktop-amd64 off a Cruzer 16GB flash drive that was installed via Universal-USB-Installer-1.8.1.4.

My problem like so many others is that when I load into Ubuntu, gparted detects two separate hard drives instead of the raid. I read that this is because kpartx is not installed on 10.10. I then went in LiveCD mode and downloaded kpartx from Synaptic Manager. Gparted still reported two drives. I opened terminal and run a few commands with kpartx. I received an error. (Forgive me I didn't write it down, but I believe it said something about a communication error. I will try again later and see.)

Currently I am reflashing the Cruzer with a persistence of 4GB. I am not familiar with this process, but I understand that my LiveCD boot will save information I download to it. I decided to try this method because I was going to install kpartx and reboot to see if this made a difference.

I am looking for any suggestions on a different method or perhaps someone to tell me that the raid controller or some hardware isn't supported. I did install ubuntu-10.10-alternate-amd64 on my flash drive, but fail to get past detecting my CD-ROM drive since it's not plugged in. If this method is viable, I will plug it in. I also watched the ..... video were a guy creates Raid 0 with the alternated CD, but it wasn't a dual boot and didn't use a raid controller from a MB.

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Hardware :: RAID - Create RAID 1 Without Deleting Data?

Jul 18, 2009

how can I create RAID 1+0 using two drives (one is with data and second one is new). Is it possible to synchronize data drive with empty drive and create RAID 1+0 ?

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Slackware :: Windows Raid-O Install Virtualbox, Will Slackware Install Raid-o Without Raid Driver?

Feb 28, 2011

If I have a windows installed in raid-0, then install virtualbox and install all my linux os,s to virtualbox will they be a raid-0 install without needing to install raid drivers?

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Ubuntu :: Converting RAID 1 To RAID 5 System

Jun 12, 2010

I have two 1TB hard drives in a RAID 1 (mirroring) array. I would like to add a third 1TB drive and create a RAID 5 with the 3 drives for a 2TB system. I have ubuntu installed on a separate drive. Is it possible to convert my RAID 1 system to a RAID 5 without losing the data? Is there a better solution?

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CentOS 5 Hardware :: RAID Or Non-raid HBA Recommendation?

Dec 10, 2009

I am going to be using CentOs 5.4 for a home storage server. It will be RAID6 on 6 x 1TB drives. I plan on using an external enclosure which is connected via two SFF-8088 cables (4 drives a piece). I am looking to try and find a non-RAID HBA which would support this external enclosure and allow to use standard linux software raid.

If this is not an option, I'd consider using a hardware based raid card, but they are very expensive. The Adaptec 5085 is one option but is almost $800. If that is what I need for this thing to be solid then that is fine, I will spend the money but I am thinking that software raid may be the way to go.

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Ubuntu Installation :: Dual Boot SSD Non Raid - 1 Terabyte Raid 1 Storage "No Block Device Found"?

Sep 15, 2010

It's been a real battle, but I am getting close.I won't go into all the details of the fight that I have had, but I've almost made it to the finish line. Here is the set up. ASUS Z8PE-D18 mother board 2 CPU, 8 Gig Ram. I recently added an OCZ Agility SSD, defined a raid 1 virtual disk on the 1 terabyte WD HDD drives, which will holds all of my user data, the SSD is for executables.The bios is set to AHCI. Windows 7 installed fine, recognizes the raid VD just fine.

I installed Ubuntu 10.04 by first booting into try and mode, then opening a terminal and issuing a "sudo dmraid -ay" command. Then performing the install. I told it to install the raid components, and told it to let me specify the partitions manually. When setting up the partitions, I told it to use the free space I set aside on the SSD from the Windows 7 install as ext4 and to mount root there. Ubuntu installed just fine, grub2 comes up just fine, and Windows 7 boots with out a hitch, recognizing the mirrored partition as I indicated previously. When I tell grub to boot linux however, it pauses and I get the "no block devices found" message. It will then boot, but it does not recognize the raid array. After Ubuntu starts up I can run "dmraid -ay" and it recognizes the raid array, but shows the two component disks of the raid array as well. It will not allow the component disks to be mounted, but they show up which is annoying. (I can live with that if I have to)

I have fixed a similar problem before by setting up a dmraid script in /etc/initramfs-tools/scripts/local-top ... following the instructions found at the bottom of this blog:[URL].. To recap: My problem is that after grub2 fires up Ubuntu 10.04.1 LTS (Lucid Lynx), it pauses, and I get "no block devices found" It then boots but does not recognize the raid array untill I manually run "dmraid -ay". I've hunted around for what to do but I have not found anything. It may be some timing issue or something, but I am so tired of beating my head against this wall.

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Server :: Convert Raid 1 To Raid 10?

Jul 21, 2011

I am looking to convert a raid 1 server I have to raid 10. It is using software raid, currently I have 3 drives in raid 1. Is it possible to boot into centos rescue, stop the raid 1 array. Then create the raid 10 with 4 drives, 3 of which still has the raid 1 metadata, will mdadm be able to figure it out and resync properly keeping my data? or is there a better way to do it?

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Server :: Tur A Non-RAID System To RAID?

Mar 24, 2011

I have a box that doesn't have a Raid controller or a software raid running currently. I would like to make it a RAID 1. Since it seems there isn't any IDE RAID controllers hardly around, I have another HD that is the exact model as the drive currently in the box running CentOS. Can I some how add the second drive and get the box to mirror from here own out? The box gets really hot and I want to be ready for a HD failure.

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Fedora X86/64bit :: Use Fedora / Linux Raid Program To Manage Raid Array?

Jun 24, 2009

I've tried to install Fedora 11, both 32 and 64 on my main machine.It could not install as it stops on the first install window. I've already filed a bug but really haven't seen any feed back yet.The bug has something to do with Anaconda and the Raid array but I really can't tell.

I have an Intel Board (see signature). I am running intel raid software under W7 currently.It works fine. But, I'm wondering, when I attempt to install F!!, is my current raid set-up causing problems? Do I need to get rid of the intel raid software and use a Fedor/Linux raid program to manage the raid array??

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CentOS 5 Hardware :: SW RAID - Raid Devices Larger Than Total Devices

Dec 7, 2010

I'm working on a server and noticed that the to RAID5 setup is showing 4 Raid devices but only 3 Total devices. It's on a fully updated CentOS 5 system that only has three SATA drives, as it can not hold anymore. I've done some researching but am unable to remove the fourth device, which is listed as removed. The full output of `mdadm -D /dev/md2` can be see below. I've never run into this situation before.Anyone have any pointers on how I can reduced the Raid Devices from 4 to 3? I have tried

mdadm /dev/md2 -r failed
mdadm /dev/md2 -r detached

but neither work and since there is no block device listed I'm not quite sure how to get things back in sync so it's only seeing the three drives.

/dev/md2:
Version : 0.90
Creation Time : Tue May 25 11:07:04 2010
Raid Level : raid5

[code]....

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Hardware :: Mega Raid Showing Warning "0:0:RAID-1:2 Drives:153GB:Optimal Drives:2 (11528 Errors)"

Apr 8, 2010

i have cretaed RAID on one of my server RAID health is ok but its shows warning. so what could be the problem. WARNING: 0:0:RAID-1:2 drives:153GB:Optimal Drives:2 (11528 Errors)

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Ubuntu :: Bandwidth Monitoring Per IP?

Jan 5, 2011

My problem is the following : I have a certain Internet connection for a certain network. So many people are sharing this network. What i need is a software on Linux (preferably Ubuntu) that will enable me to monitor the bandwidth usage PER IP Like : ip x.x.x.x using 20Kb upload 200Kb download , connected to this site for example.. The main goal is to know from which IP is the high Upload traffic or download traffic is coming , because i have a certain quota and I'm always getting over the quota (in upload and download) and end up paying extra for the ISP , so i would need to know who is using lots of upload/download bandwidth .

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Networking :: Bandwidth Monitoring Using SSH

Oct 5, 2009

I am renting a VPS from[URL].They do not supply a webhosting panel for restarting/shutting down or for seeing monthly bandwidth consumtion. I am running CentOS 5.3. I was wondering if theres any programs that you can install to view monthly/daily bandwidth consumption on our server?

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Server :: Monitoring EC2 RDS In Nagios?

May 27, 2011

I want to monitor RDS (mysql database of EC2) using Nagios. In command line ( I am able to do it but I dont know how to feed it in nagios . On nagios server if I execute the following command , I am able to fetch the information of database (RDS)

Nagios_server #/usr/local/nagios/libexec/check_mysqld.pl -p<password> -f -u <username> -A uptime,threads_connected,slow_queries,open_tables -H <hostname> -q 'SHOW STATUS'

output :- MYSQL 5.1.50 OK | uptime=344783 threads_connected=672 slow_queries=0 open_tables=64

Note :- Here the host name is public dns name (x.y.z.amazon.com) .We cant ping to this host.With mysql command , we can log in and work on databases.

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Server :: Convert RAID 1 To NON-RAID System In Cent OS 5 System?

Jan 6, 2010

Here is my system: I have dell poweredge 1950 PERC 6 with 300 GB raid system. It has two disks of each 300GB RAID mirrored system. I have few applications and data that reached around 280GB. As you know, poweredge 1950 we can have only two disk.

They are not mission critical. Hence, I wanted to remove the raid system and use as a non-raid system. By doing it, The applications and data can grow upto 600GB. I do not want to loose the data and setup. I am not so clear about RAID system and its conversion.

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