Hardware :: Main Drive Increase Speeds Of Network Transfers From Raid Drive?

Jan 3, 2011

my linux server is running with an old IDE hard drive getting these hdparm results:


i have a WD Raptor drive i'm going to install and put a fresh install of linux on it. i'm just curious, will using a much faster HD as my main drive increase the speeds of my network transfers from the raid drive? do transfers only go as fast as the system drive?

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Ubuntu :: Very Slow Write Speeds To USB External Hard Drive?

Oct 11, 2010

I'm trying to back up my hard drive to a 2 TB WD external so that I can do a clean install of 10.10, however I'm getting tremendously slow write speeds. It hovers around 1.5 MB/s and steadily slows from there. It tells me it will take 150+ hours to transfer 400 GB of data.

I have a AMD quad core processor and 8 gigs of ddr3 ram... USB 2.0... I feel this should go much faster.

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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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Ubuntu Networking :: Get Network Drive To Mount As A Local Drive?

Aug 2, 2010

I was trying to figure out how to get my network drive to mount as a local drive on my computer. This was back on 9.10. Since I've upgraded to 10.04, my boot process halts and tells me (paraphrasing) /shared is not ready to mount. To continue, pres S to skip or M to manually mount the drive.

Well, I have it mounting now through GVFS and I don't need this in my startup anymore. Frankly, it's just annoying that it won't boot into Ubuntu right away. So, what's the startup file I need to edit to remove the attempt to mount the network drive?

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Ubuntu :: How To Increase Torrent Download Speeds

Jan 10, 2010

Is there any way to tweak the torrent download speeds in ubuntu? i remember doing lots of things in utorrent when i was using windows. Like increasing max half open connections!! is there any equivalent settings for ubuntu? I am using qbittorrent as a torrent client.

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Networking :: Wine - Network Drive - Startup Drive ?

May 3, 2011

How it works in Windows.

I have a server designated as F: drive. This server is a linux server. All computers that access this server are windows machines.

In windows, you can make a "Short Cut" that links a Executable program to the F: drive on the server. When you click on this "Short Cut", Windows will "Run" your program in the exact directory the Executable is located.

Thus, if you Make a "Short Cut" called "Customer" on your network F: drive, you can click on that shortcut and "Customer" will run as if you ran it directly off the F: drive, NOT your station drive of C:

Now *MY* scenario what I WANT to do:

I want to copy the above scenario and be able to do the same thing with Linux and WINE.

I have tried to make a "Shortcut" to my Linux laptop, but it fails. I can only "Copy" the program to the laptop. And when I run it on the laptop, it will not run, because it does not recognize the "F:" drive having all the data files, it only recognizes the C: drive of my linux.

When I tried to make a "link", it says something like "LInk not supported by this file".

So, is it possible to make a "shortcut" to a executable file on the network server, so that if you run the shortcut, it will run the program as if it is located on the F: server instead of the linux station? In Windows, it has a field that says "Target", in which the file will be ran in that directory.

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Software :: Increase Size Of Ubuntu Installed Drive?

Aug 25, 2010

I have already installed window 7 on my pc.. Then i install ubuntu 10.04 inside window and choose another drive (20Gb) for ubuntu installation...During installation by default ubuntu installation size was fixed that was 3Gb... i installed it as it is... After installation when i update ubuntu then 3Gb was filled up and there was a Message about"Disk space".. I have to install other packages but error is still there showing that u have not enough space .... But the size of ubuntu drive is

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Ubuntu :: Erase External HD W/o Erasing Main Drive?

Apr 12, 2010

I have an external hard drive I use for backups. This drive has entire operating system on it(don't know which one, but I think it's intrepid), from when I did a complete backup eons ago. I have added new stuff since then. I tried to erase the system files on it, since they take up space and aren't likely from my current system. I don't run the drive all the time, only when I'm backing up files. The rest of the time, it's off. When I did this, I couldn't run any programs on my main computer( the bin directory was gone), and it wasn't in my trash on the main drive or the external drive. I tried re-installing without erasing my home directory on the main drive; it went okay, until I tried to open a file.

My /home apparently had nothing in it, so i downloaded my backup files, only to run out of room. The files were there; I just couldn't see them. I tried to open several programs, but was told I didn't have root access. Finally, I just reformatted the whole drive and re-installed everything. What I'd like to know is:1. How do I clear the junk from the external drive without hurting the main drive?

2. Why did erasing the old bin file on the external drive whack the same file on the main drive?3.Several times before, I have upgraded or re-installed xubuntu, leaving my home directory intact. The upgrade either can't find my files, or forgets half my settings. How can I keep my files and settings? I hate having to re-install everything from scratch each time I upgrade. I thought having a separate /home directory was supposed to protect all that.

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Ubuntu :: Slow Transfer Off Main Hard Drive

Dec 25, 2009

I have a 500 gig external usb, and a few 8 gig flash drives. If i copy a file (say a movie or large file) from my primary hard drive (80 gig WD formatted to ext3) to a usb drive it transfers very slowly, about 2 mb/s. But if I copy a file off my secondary internal drive (40 gig seagate formatted to ntfs) it transfers full speed (25-30 mb/s) Its also very slow transfering between internal hard drives (again, no more than 5 mb/s) I checked and as far as i can tell both drives are running in DMA mode. Any reason my primary seems to be causing this bottleneck? it seems to preform fine otherwise (as it is the drive with my ubuntu installation on it)

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Debian :: Mint Wont Stay On The Main Hard Drive?

Jun 28, 2010

I posted this here because I think Linux Mint is based off of Debian, am I wrong? Anyhow I installed mint to a seperate partition next to windows on my computer. I had my external unplugged at the time... It was actually plugged in at my neighbors. They where watching a movie I had on it; anyhow I plugged it back in went to bed woke up and it took out its own partition on the external.

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General :: Installed 10.10 Ubuntu On SDHC Card - But Still Boots On Main Drive

Mar 6, 2011

I have an 8 gig ssd Dell vostro that has been running ubuntu linux successfully for several months. Linux is the only O.S. on the machine. Wishing to have more room I inserted a new 32 Gig SDHC card in the card slot and did an ext4 format and then did an install using the 10.10 disk that did the original install. Everything seemed to proceed as expected, but it rebooted using the 8 Gig drive. The 32 Gig card appears to have all the proper files. How do I get it to boot from that card?

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General :: Tried To Install Mint To Flash Drive / Can't Boot From Main Hard Disk

Jan 15, 2011

I wanted to install a Linux distro to a flash drive so that I can have a portable OS with all my settings, programs, etc. wherever I go. So I fired up a Linux Mint Live CD and installed Mint to the flash drive, and this seems to work OK. But now, whenever I try to boot up my system normally without the flash drive plugged in, it doesn't seem to work. It basically hangs for a bit, and then I get the following prompt:

However, when I try powering my system up when the USB is plugged into the computer, it gives me an option between using the OS installed on my USB and the OS installed on my HD. Selecting the latter, everything loads up just fine. I'm guessing that installing Mint to the flash drive somehow messed with my native Grub installation.

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Ubuntu Installation :: Win7 Dual Boot - Does Not Detect Main Hard Drive

Feb 23, 2010

A few weeks back I was trying to install this (alongside windows 7) and no matter what I tried it would not install. I tried both 9.04 32 bit and 9.10 64 bit. Each screen (language, keyboard, etc) took about 20 minutes to load, and when I finally got to the install it always stopped at about 2/3 percent, giving some type of I/O error. No matter how many times i reburned and redownloaded. (old thread if you're curious)

I eventually gave up but then realized I had an old xbox hard drive hooked up that I cannot boot or read or do anything. It was set as hard drive 0 in windows hard drive manager or whatever. So I unplugged it. Now my windows drive is drive 0, and I have a second internal drive.

I finally got back to installing this. I avoided the graphical installer at first because it was so slow, opting for the alternate cd. It went fast but when I tried to partition it was unclear to me which disk i was partitioning. Doesnt matter because when i clicked ok, it froze at 0% for 30 minutes so i had to do a hard restart. Windows ran the disk check, etc, etc, I checked the disk management in windows and it was just a single windows partition as it should be.

So I tried the graphical cd again instead. It goes really fast through the screens now, HOWEVER it will not detect my drive 0 windows drive! Just my second internal drive which of course I can't install on without wiping the entire thing. I have installed kubuntu 9.04 dual booted with windows xp on this exact hard drive, over a year ago successfully, so I don't get it. What do i do??

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Ubuntu / Apple :: Throw ReFit Into Main Hard Drive's Root Folder But Doesn't Work

Dec 7, 2010

I have a Macbook 2,1 since 2007. Last week my hard drive just died, so I decided to replace it with a new one, no problems with that. The problem came when I had to install an operative system, because my DVD drive has been broken for a year and a half now. I know we can easily install MacOSX from an external usb drive, but I don't have a big enough pendrive at the moment. So I went for Ubuntu. I have managed to get an Ubuntu 10.10 live usb stick working like charm, if anyone is interested. I just downloaded the latest i386 iso and followed this advice by pxwpxw for the 32bit EFI.

The only thing I had to change in the boot.cfg was the name of the iso and -very important- changed initrd.gz for initrd.lz. The live usb works great. But I decided to do an installation on the hard drive. I installed it using the whole hard drive and didn't get any errors. But when I boot the macbook it doesn't detect anything. I guess I need an EFI bootloader or something to make it work. I've tried to follow this guide but it seems to be intended for someone who already has MacOSX and the Ubuntu installation working. I just want to install a bootloader or whatever I need from the "outside" (from the live usb I'm using). I tried to just throw reFit into the main hard drive's root folder but it doesn't work. I think that maybe creating an HFS+ partition and installing reFit in it may work, but I don't think I can create that kind of partition from the Ubuntu usb and I also need a working MacOSX to run the enable.sh. I've also read of elilo but I've seen that it hasn't been updated for 3 years

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General :: RAID A Drive Already Containing Data?

Aug 13, 2010

I currently have a 1.5TB sata drive connected to my system, with data already on it. In the next few days I am planning to use mdadm to create a raid5 array with another 2 1.5TB drives along with the one I already have. Is it possible to create the raid without losing the data on my current hard drive? Obviously it will be backed up before hand just in case, but it would be nice not to have to restore nearly a TB of data after raid'ing the drives.

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Hardware :: Why The OS Would Not Be Seeing The Raid As A Single Drive

Mar 4, 2010

I have the H8dmu Supermicro mother board with the MCP55 RAID. CentOS 5 is detecting the four hard drives separately. The operating system resides on a hard drive not defined as a part of the RAID. The RAID was setup as striped.The sata_nv driver is loaded.why the OS would not be seeing the raid as a single drive?

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Debian Hardware :: Raid 1: Nautilus See Too Much Drive?

May 7, 2011

I installed Debian Squeeze using "dmraid=true" because I have an onboard RAID controller. Everything is fine except when I go into Nautilus I see, the raid array and the 2 disk inside the RAID array. This is a little confusing!

Is there a way to fix that? Is this only a bad config in fstab?

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Ubuntu :: Drive Keeps Failing Out Of Software RAID?

Jan 26, 2010

I have 4 1.5 TB Seagate drives configured in RAID 5 via mdadm on Karmic. It seems that after a while, one drive always drops out of the array. It's a brand new drive, and after a reboot, it will come back in and rebuild just fine, so somehow I doubt the drive is actually failing. Here's a dmesg snip. The mounting that happens at the top is the mounting of the array, and as you can see, after a while, there is some kind of write failure.

[70178.385356] EXT3 FS on md0, internal journal
[70178.385373] EXT3-fs: mounted filesystem with writeback data mode.
[95234.954141] ata5.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
[95234.954160] ata5.00: cmd ea/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[95234.954162] res 40/00:00:c6:66:a8/00:00:ae:00:00/e0 Emask 0x4 (timeout)
[95234.954168] ata5.00: status: { DRDY }


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Ubuntu :: RAID Data Drive For System?

Apr 7, 2010

I am trying to create a RAID data drive for my system but I am having setting it up since I am a total linux noob.

The system has 3 physical HDD-s:
1. 320 GB (has functional Ubuntu 9.10 installation) attached to a PCI SATA card
2. 2TB on motherboard
3. 2TB on PCI SATA card

I want to create a software RAID1 of disks 2 and 3. So far I have used the Palimpsest Disk Utility:
- Created a GUID Partition table on both disks (2, 3)
- Used File -> New -> Software Array, made sure both my drives were included
- Once Palimpsest listed the RAID Drive as a Software RAID Array, I told it to create Ext3 filesystem on it

Well.. at least thats what I thought I did. At this point I have been able to mount the RAID drive and put files on it. However when I look at its information in Palimpsest, I am told that the drive is not partitioned. Both RAId components /dev/sda1 and /dev/sdc1 are reported to be in Sync, but the RAID Drive's own state is 'Running, Resyncing @ 45%' (and lowly growing).

My questions are: Is this a normal setup or did I do something incorrectly? Why is the drive reporting to have no partition? And howcome I can use it if it does not have a partition? I have found the command line based configurations to be a tad too confusing to follow, so I have tried to stick to graphical tools - is this a hopeless cause in Ubuntu or is it possible to achieve what I want to do without command line? I will list some info on my disks below - perhaps this offers more insight to those of you more familiar with Linux.

mindgamer@mind-server:~$ sudo lshw -C disk
[sudo] password for mindgamer:
description: ATA Disk
product: WDC WD3200BEVT-0
vendor: Western Digital


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Ubuntu :: Convert RAID 1 To Single Drive?

May 27, 2010

I kept my movies on a 2 drive software raid1 mirror, but now I changed my mind about needing a raid and pulled one of the drives for another use. Can I convert the remaining raid drive back to a regular single drive and keep the data in place? Can I change the raid partition back to regular partition and be able to mount it?

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Ubuntu Installation :: Cannot Recognize Raid Drive

Sep 20, 2010

I intend to install ubuntu server 10.04 on an IBM blade server x3550 m3. The server has two SAS and two SATA II hard drives, each configured as RAID 1 through a ServeRAID m1015 card. However, ubuntu didn't recognize any hard drives at the installation.

Is there a way that I can load raid driver (if exists) during installing Ubuntu?

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Ubuntu :: Cannot Mount Windows Drive (RAID)

Nov 1, 2010

I've just installed ubuntu 10.10 (64bit) on my 1TB drive where as I have my windows drives on a seperate 2x 1TB drives in RAID and am not exactly sure how to mount it.

I am not finding it under computer or under NTFS configuration tool and when I click mount under storage device manager it does nothing, although does detect the RAID array as /dev/sda2

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Ubuntu :: New Build - Hard Drive Set Up - RAID & SSD ?

Nov 3, 2010

After keeping my old (laptop) computer going for 8 years, I've finally taken the splash and ordered myself a new PC, well the compoents any way to build myself a desktop this time.

I've just got a couple of questions.

I've got a 60GB SDD and a 1TB HDD. On the SDD I was planning on partitions for Ubuntu Swap Window partition, to run a Virtulisation, not dual boot.

Performance wise, is it best to install / on the SDD and /home on the HDD or /home on the SDD as well and just move music and videos ect to the HDD.

Just to complicate things, when ordering the HDD there was an offer to get a second 1TB HDD for an extra 11, so now I have 2. I was planning to set these up as RAID 1, which I believe I can do via the alternative install.

What would be the best way to then backup / . I guess it must be possible to schedule an image of/ to be copied across to HDD is it?

I did hear that RAID was a bit iffy in ubuntu, but looking about on the net things seem to be better 9.10 → Also the boot disk isn't RAID.

Are there any RAID or SSD issues I should be aware of?

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Ubuntu :: Encrypt System Drive - RAID 1

Feb 22, 2011

1- I want to encrypt my system drive
2 - I want to make my system drive a RAID 1
3 - I have two 1 T hard drives, but I would like to be able to add two more 1 T hard drives for a total of 4 1T drives in the future. How do I do that?

I am using ubuntu 10, desktop edition. I have not added the OS yet, I am building this weekend.

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Hardware :: Recover Data From Raid 1 Drive?

Oct 17, 2010

I was using a Buffalo LinkStation Duo to store pictures and the OS in the unit failed. As far as I know, the data on the two 1 TB drives is fine, and since Buffalo uses a Linux kernel in their LinkStation and the format is xfs, it should be possible to get the data off if I can mount one of the drives on a Linux box. I've put one of the drives into an external USB enclosure and attached it to my Linux system, but I cannot get the drive to mount, probably because it is one element of a Raid 1 array.

Most of what I can find on the Web concerns setting up a new Raid array, not creating an array around a drive that already contains data. I have installed mdadm, and I'm running Mint Linux release 9 (Isadora) on an Intel box. When I run mdadm -D /dev/sdb or sdb6, the device and the partition where the data is located, it reports that the device does not appear to be an md device. I'm not sure what that means. Any help would be greatly appreciated, as I've got around 13,000 photos on these disks that have no backup (I figured what could go wrong with mirrored copies?).

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Server :: Dual Drive Failure In RAID 5

May 22, 2009

I *had* a server with 6 SATA2 drives with CentOS 5.3 on it (I've upgraded over time from 5.1). I had set up (software) RAID1 on /boot for sda1 and sdb1 with sdc1, sdd1, sde1, and sdf1 as hot backups. I created LVM (over RAID5) for /, /var, and /home. I had a drive fail last year (sda).After a fashion, I was able to get it working again with sda removed. Since I had two hot spares on my RAID5/LVM deal, I never replaced sda. Of course, on reboot, what was sdb became sda, sdc became sdb, etc.So, recently, the new sdc died. The hot spare took over, and I was humming along. A week later (before I had a chance to replace the spares, another died (sdb).Now, I have 3 good drives, my array has degraded, but it's been running (until I just shut it down to tr y.

I now only have one replacement drive (it will take a week or two to get the others).I went to linux rescue from the CentOS 5.2 DVD and changed sda1 to a Linux (as opposed to Linux RAID) partition. I need to change my fstab to look for /dev/sda1 as boot, but I can't even mount sda1 as /boot. What do I need to do next? If I try to reboot without the disk, I get insmod: error inserting '/lib/raid456.ko': -1 File existsAlso, my md1 and md2 fail because there are not enough discs (it says 2/4 failed). I *believe* that this is because sda, sdb, sdc, sdd, and sde WERE the drives on the raid before, and I removed sdb and sdc, but now, I do not have sde (because I only have 4 drives) and sdd is the new drive. Do I need to label these drives and try again? Suggestions? (I suspect I should have done this BEFORE failure).Do I need to rebuild the RAIDs somehow? What about LVM?

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Software :: Add The New Hard Drive And RAID Later - Or Reformat?

Mar 16, 2011

I am on Ubuntu 10.10.I installed it on a 500 gig hard drive.In the future i want to software RAID(I did it in the past using the alternate version of ubuntu from the installation process), is it possible to add the new hard drive later and RAID later or i need to reformat?I am talking about software RAID.

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CentOS 5 :: Install And Booting From Raid Drive?

Feb 28, 2009

I am attempting to set up an IBM Intellistation Z Pro to optionally boot from many OS versions. One of these is Windows XP. Windows XP is currently installed on a RAID 1 device consisting of a pair of 1 GB WD drives. These are SATA drives. The HBA I'm using is a SYBA SATA II card that uses Silicon Image's SIL3124-2 chip. The card has a BIOS and I've set up two 60 GB mirrors for Windows. I boot XP fine from this setup and things run good.

I've downloaded the CentOS 5.2 images and am able to start the installation process. I'm baffled on where to install the OS software on the RAID device. The installation process shows the two 1GB drives as separate drives and there is no acknowledgment of the 60 GB partition I've already created on them for Windows XP. I expected to see only the one logical RAID device and 60 GB of it in use for a NTFS partition. Reluctant to proceed further, I bailed on the install and am asking for advice on how to proceed.

The big question is

1) How can I install CentOS 5.2 on the RAID drive to coexist with a Windows XP installation? My desire is to boot either from this drive.

other questions related to this are:

2) Why does the CentOS partitioning software used for the install not display the logical RAID drive set up through BIOS (I'm assuming that this means it was set up apart from any Windows drivers etc.)? Only the two physical drives are displayed and there is no mention of any partitions in use.

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Ubuntu :: Mount A RAID Drive Without Deleting Data?

Jun 1, 2010

I had to recently reinstall ubuntu because 10.04 started acting up on me. I reinstalled 9.04 but I don't know how to mount my RAID drive without messing with the data that's already on there. I have the UUID for the RAID but fstab isn't able to find it. I also previously used RAID software but I don't remember which one I used. how to mount my drive so that ubuntu can see it?

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Ubuntu :: Raid Hard Drive Not Showing In Computer?

Jul 21, 2010

In my system i have 3 250 GB Hard drives in a RAID 5 configuration. unfortunately, i cannot see this volume in "Computer", so i am unable to access any of the files on the volume. wierd thing is that when i enter disk utility, it finds the drives, and recognises them as a RAID volume. any ideas on how i can access the files on this drive

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