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Filesystems, Disks and Memory
Help finding a Unix friendly RAID 1 backup
Post 302509665 by c.wakeman on Thursday 31st of March 2011 12:57:55 PM
03-31-2011
Quote:
No. Sorry I didn't realize this. You seemed confident the disk had USB connectivity and I didn't question it too deeply.
That bit of info certainly could have been made clearer in the product specs; I read USB and saw a USB port and, incorrectly, assumed it would work. Quote:
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1) Return the Buffalo HD and purchase another HD that has proper USB connectivity.
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You'll never be able to do a bare-metal backup that way. It'll never recognize a network-only disk. Things on a network don't just appear because you plug them in (except for DHCP servers). It has to be used in other ways, and likely can't be done from a gentoo livecd since it's probably CIFS. Won't be trivial to do so on a full linux system, either. It won't be able to use it as a disk anyway, just as NAS.
It appears I may have a trip to best buy in my future if I want to get this done before the end of the week.
---------- Post updated at 12:28 PM ---------- Previous update was at 11:46 AM ----------
I have another question, that's really more of an option, but I'm interested in your opinion.
One of the reasons I am doing (as you suggested) a bare-metal backup is that, in the event the server hard drive fails, I can crack the hard drive open and replace it. If that is the case and I need to purchase something different anyway, would it be a good option to get an appropriate internal hard drive, with an enclosure that supports USB? Since it will only be used as a bare-metal backup to do at most weekly updates, is this acceptable? From what I understand, the external hard drives provide portability and cooling fans to help with prolonged and constant use. However, if I don't really need either of those and full replacement functionality is desired, is that a better option or am I simply making things more difficult for myself?
---------- Post updated at 12:57 PM ---------- Previous update was at 12:28 PM ----------
I realize that most of the larger external enclosures include fans anyway so that really isn't a differentiating factor. I understand buying a prepackaged external HD is easier; I just worry that, in the event of failure, it will be difficult to extract the HD and/or the HD won't be compatible with the system. (I've never cracked open a prepackaged external HD before.) Though, it occurs to me now that compatibility could be an issue regardless of whether the HD is external or internal without specifically knowing the hardware layout of the system.
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LEARN ABOUT DEBIAN
mic-livecd-iso-to-disk
MIC-LIVECD-ISO-TO-DISK(1) General Commands Manual MIC-LIVECD-ISO-TO-DISK(1) NAME
mic-livecd-iso-to-disk - Convert a livecd image to a live USB image then write to a USB disk or partition SYNOPSIS
mic-livecd-iso-to-disk [--reset-mbr] [--noverify] [--overlay-size-mb <size>] [--home-size-mb <size>] [--unencrypted-home] <isopath> [usbstick device] <isopath> is your livecd image path name, [usbstick device] is optional, if not provided, it will detect automatically and ask you to select. DESCRIPTION
mic-livecd-iso-to-disk can convert a livecd image to a live USB image and write it to a USB disk or partition, it is different from mic- image-writer which is just a safer dd with progress bar. mic-livecd-iso-to-disk can detect all the removable USB disks and let you select one of them, if you didn't insert any USB disk, it will ask you to insert until a USB disk is available, it can decide if your USB disk need to be formated and if your USB disk has an appropriate partition for this livecd image, all the operations are interactive and have warnings f they will damage your old data on your USB disk. mic-image-manager has a GUI tool for it. OPTIONS
--reset-mbr Set MBR on your USB disk --noverify Don't verify your livecd image --overlay-size-mb Specify overlay size, the default size is 64 MB --home-size-mb Specify home size, the default is 0 EXAMPLES
Write a Molib live image to your USB disk: mic-livecd-iso-to-disk your-2.1-final.img EXIT STATUS
mic-livecd-iso-to-disk returns a zero exist status if it succeeds, otherwise return non-zero and print error message. AUTHOR
Yi Yang, Anas Nashif, Jianfeng Ding SEE ALSO
mic-image-creator(1), mic-convertor(1), mic-chroot(1), mic-image-writer(1), mic-image-manager(1) perl v5.12.3 2011-05-31 MIC-LIVECD-ISO-TO-DISK(1)