Re: [Dorset] Cloud Computing - Stallman's take
Hi Terry, Who can swear that Google or Amazon might not have a similar catastrophe as the years go by? I don't see a problem with web apps as long as the user's aware that they need their own copy of the data in a usable format, and that the site may fold tomorrow with no notice. For instance, if I used Gmail as my mail email client, then I'd look into doing reguarly syncs of the emails over IMAP back to my storage where they'd be backed up. But that's not really any different to running a webmail server myself; I'd still be backing up the data to different places and media, e.g. Amazon S3 over tarsnap. http://www.tarsnap.com/ WRT RAID, it seems the mantra RAID isn't backup is becoming more common now. Cheers, Ralph. -- Next meeting: Bournemouth, Wed 2010-02-03 20:00 http://dorset.lug.org.uk/ http://www.linkedin.com/groups?gid=2645413 Chat: http://www.mibbit.com/?server=irc.blitzed.orgchannel=%23dorset List info: https://mailman.lug.org.uk/mailman/listinfo/dorset
Re: [Dorset] md5sum mismatch
Does this help http://adammooz.wordpress.com/2009/07/14/dcfldds-md5-vs-md5sum/ Steve On 04/02/2010 12:02, shane fail wrote: Hi, i am looking for any suggestions which will help with the following issue. I am trying to image a Western Digital 40gb hard-disk, to be added into the Autopsy tool as evidence on a case i have manufactured. The drive is connected via USB as an external drive and being imaged to the internal hard-disk of a ubuntu server. I have tried using:- dd if=/dev/sdg of=/home/sdg.dd bs=512 dd if=/dev/sdg of=/home/sdg.dd bs=2048 dcfldd if=/dev/sdg of=/home/sdg.dd md5sum /dev/sdg each command returns a different md5 hash. I have repeated the md5sum command several times between running the other commands and the md5sum is consistent with this command, so i know the original disk is not being written to. the dd and dcfldd commands always return: amount of files +1 files in same amount +1 files out. The hashes match between device and image file on each occurrence but none match the result returned by the md5sum command. I hope i am being clear enough here, and if anyone could shed some light on how this would happen, it would be greatly appreciated. kind regards, shane No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.733 / Virus Database: 271.1.1/2666 - Release Date: 02/03/10 19:35:00 -- Next meeting: Bournemouth, Wed 2010-02-03 20:00 http://dorset.lug.org.uk/ http://www.linkedin.com/groups?gid=2645413 Chat: http://www.mibbit.com/?server=irc.blitzed.orgchannel=%23dorset List info: https://mailman.lug.org.uk/mailman/listinfo/dorset
Re: [Dorset] Cloud Computing - Stallman's take
On 05/02/10 10:56, Ralph Corderoy wrote: Hi Terry, Who can swear that Google or Amazon might not have a similar catastrophe as the years go by? I don't see a problem with web apps as long as the user's aware that they need their own copy of the data in a usable format, and that the site may fold tomorrow with no notice. For instance, if I used Gmail as my mail email client, then I'd look into doing reguarly syncs of the emails over IMAP back to my storage where they'd be backed up. But that's not really any different to running a webmail server myself; I'd still be backing up the data to different places and media, e.g. Amazon S3 over tarsnap. http://www.tarsnap.com/ WRT RAID, it seems the mantra RAID isn't backup is becoming more common now. Cheers, Ralph. We live in the real world and nothing is generally free as companies need to make money. So if you use any companies service, just try to ensure you don't lock your self in. Sometimes you don't have a choice or the alternative is too expensive. It is all common sense, so I use Google because they offer superb web tools for free and it runs on Linux. I accept they use my data/usage to make money in return for a free service. Stallman is increasingly behind the times and lives in a idealists world. Like Communism, sounds great but the actual reality doesn't work. That is why Linux is so successful as Linus Torvalds lives in the real world. If you use Thunderbird email client and IMAP, just ensure you have the synchronising setting on so your messages are stored locally. To check :- Edit/Account Settings (Tools/Account Settings for Windows version) For each IMAP email you have set up check the Synchronization Storage/Message Synchronizing is ticked. Backing up you home directory will ensure all your emails are backed up too. Moving to another email account is a simple drag and drop all you emails from one account to another (or select copy for backups). Thunderbird has the ability to export you emails in most formats to allow migration. Just install the ImportExportTools (Mboximport enhanced) add-on. Local server RAID is not backup, at best is just protects against disk failure. Someone hacking in to your server will have all the damage replicated! However, what is it good for is being able to keep disk backups when RAID1 mirroring is used, especially hot swappable disks. It needs user intervention and a regular swap overs. Any problems, you can have the whole server up and running very quickly. The combination of this and file backups give the most flexibility. -- -- Discover Linux - Open Source Solutions to Business and Schools http://discoverlinux.co.uk -- -- Next meeting: Bournemouth, Wed 2010-02-03 20:00 http://dorset.lug.org.uk/ http://www.linkedin.com/groups?gid=2645413 Chat: http://www.mibbit.com/?server=irc.blitzed.orgchannel=%23dorset List info: https://mailman.lug.org.uk/mailman/listinfo/dorset
[Dorset] Hub software.
Is there an Ian Rathbone on this list? Only I've been doing a little bit down at Hub Software this week. Wondered if you had any thoughts? Simono -- Next meeting: Bournemouth, Wed 2010-02-03 20:00 http://dorset.lug.org.uk/ http://www.linkedin.com/groups?gid=2645413 Chat: http://www.mibbit.com/?server=irc.blitzed.orgchannel=%23dorset List info: https://mailman.lug.org.uk/mailman/listinfo/dorset
