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#1
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length of backup
I did my first backup to an external drive and it took hours.
My hard drive is 500G. Will it take less time as it does the next backups? |
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#2
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length of backup
thewiz wrote:
I did my first backup to an external drive and it took hours. My hard drive is 500G. Will it take less time as it does the next backups? full backup will always take hour |
#3
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length of backup
On Sun, 30 Oct 2011 21:01:59 GMT, thewiz wrote:
I did my first backup to an external drive and it took hours. My hard drive is 500G. Will it take less time as it does the next backups? It all depends on what kind of backup you make. There are 3 different kinds of backups differential, incremental, and full. A full backup will always take the longest to perform as it is making a backup copy of every file on the drive. Differential and Incremental backups both require that you make a full backup first, then what they backup differs slightly. A differential backup will backup any files that have been changed since the last full backup. This gives you an advantage when restoring files in that you only need 2 archives, the full backup and the differential backup. It won't matter if your differential backup is the first one created, or the 30th one, which ever one you use your system will be restored to the state the PC was in when that backup was created. An incremental backup makes a backup of any files that were changed since the last full or incremental backup. This has the advantage of taking less time to create a backup and are smaller in size than a full backup. The disadvantage is that when restoring your system with an incremental backup you'll need the full backup and all the incremental backups in between. So for example let's say you wanted to restore from your 5th incremental backup, you'd need the full backup and incremental backups 1, 2, 3 and 4 as well. This brings in the possibility of having one of your archive files being corrupted and causing the restoration to fail. So it's a good idea to verify the integrity of your backups especially when using this method. -- Roy Smith Windows 7 Home Premium 64-Bit Agent 6.00/32.1186 |
#4
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length of backup
On Sun, 30 Oct 2011 16:48:47 -0500, Roy Smith
wrote: On Sun, 30 Oct 2011 21:01:59 GMT, thewiz wrote: I did my first backup to an external drive and it took hours. My hard drive is 500G. Will it take less time as it does the next backups? It all depends on what kind of backup you make. There are 3 different kinds of backups differential, incremental, and full. A full backup will always take the longest to perform as it is making a backup copy of every file on the drive. Differential and Incremental backups both require that you make a full backup first, then what they backup differs slightly. A differential backup will backup any files that have been changed since the last full backup. This gives you an advantage when restoring files in that you only need 2 archives, the full backup and the differential backup. It won't matter if your differential backup is the first one created, or the 30th one, which ever one you use your system will be restored to the state the PC was in when that backup was created. An incremental backup makes a backup of any files that were changed since the last full or incremental backup. This has the advantage of taking less time to create a backup and are smaller in size than a full backup. The disadvantage is that when restoring your system with an incremental backup you'll need the full backup and all the incremental backups in between. So for example let's say you wanted to restore from your 5th incremental backup, you'd need the full backup and incremental backups 1, 2, 3 and 4 as well. This brings in the possibility of having one of your archive files being corrupted and causing the restoration to fail. So it's a good idea to verify the integrity of your backups especially when using this method. Thanks for the explanation of the different types of backup. Which would be fastest, a full backup or a clone of the drive. I was thinking that if the drive isn't full then a clone might be faster. |
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length of backup
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#7
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length of backup
On Sun, 30 Oct 2011 21:01:59 GMT, thewiz wrote:
I did my first backup to an external drive and it took hours. My hard drive is 500G. Will it take less time as it does the next backups? It would help if you told us which backup software you're using, and how much of that 500 GB is actually used. If you have an option to do a differential or incremental backup next time, that would capture only the new and changed files. (Different software uses "differential" and "incremental" to mean slightly different things.) But if what you're doing is a disk image backup, it's always going to take about the same time. You might check the backup software and see if it has an option to adjust priority. You could give it a higher priority, at a time when you don't want to use your computer for anything else, and that should make it run faster. -- Stan Brown, Oak Road Systems, Tompkins County, New York, USA http://OakRoadSystems.com Shikata ga nai... |
#8
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length of backup
Don't backup anything, wait until your first hard drive fails which
could be never so don't backup anything. thewiz wrote: I did my first backup to an external drive and it took hours. My hard drive is 500G. Will it take less time as it does the next backups? -- The Grandmaster of the CyberFROG Come get your ticket to CyberFROG city Nay, Art thou decideth playeth ye simpleton games. *Some* of us know proper manners Very few. I used to take calls from *rank* noobs but got fired the first day on the job for potty mouth, Bur-ring, i'll get this one: WHAT'S YOUR PROBLEM JERK!!? We're here to help you dickweed, ok, ok give the power cord the jiggily piggily wiggily all the while pushing the power button repeatedly now take everything out of your computer except the power supply and *one* stick of ram. Ok get the next sucker on the phone. Deirdre Straughan (Roxio) is a LIAR (Deirdre McFibber) There's the employer and the employee and the FROGGER and the FROGEE, which one are you? Hamster isn't a newsreader it's a mistake! El-Gonzo Jackson FROGS both me and Chuckcar (I just got EL-FROG-OED!!) I hate them both, With useless bogus bull**** you need at least *three* fulltime jobs to afford either one of them I'm a fulltime text *only* man on usenet now. The rest of the world downloads the binary files not me i can't afford thousands of dollars a month UBB = User based bullFROGGING Master Juba was a black man imitating a white man imitating a black man Using my technical prowess and computer abilities to answer questions beyond the realm of understandability Regards Tony... Making usenet better for everyone everyday This sig file was compiled via my journeys through usenet |
#9
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length of backup
On Sun, 30 Oct 2011 21:01:59 GMT, thewiz wrote:
I did my first backup to an external drive and it took hours. My hard drive is 500G. Will it take less time as it does the next backups? See Roy Smith's excellent description of Differential and Incremental backups, and let me add one other disadvantage of them to what he mentions. If a file is deleted and you later restore from a differential or incremental backup, you will get that file back. |
#10
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length of backup
I did my first backup to an external drive and it took hours.
My hard drive is 500G. Will it take less time as it does the next backups? It would help if you told us which backup software you're using, and how much of that 500 GB is actually used. I am using the windows backup program from system and security, backup and restore. I am backing up music, documents and photographs. The program says backup size 129.49GB From what I have read I am thinking the next backup will be faster as it will only check and backup what is new or changed? And, thank you to all that responded and explained how it works. |
#11
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length of backup
On Sun, 30 Oct 2011 21:01:59 GMT, thewiz wrote:
I did my first backup to an external drive and it took hours. My hard drive is 500G. Will it take less time as it does the next backups? Two point (questions): 1. What backup program are you using? 2. The size of your hard drive is normally not an issue at all. What's the issue is how many GB of the drive are in use, and therefore needs to be backed up. So please tell us how much of the drive is in use. |
#12
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length of backup
On Sun, 30 Oct 2011 21:01:59 GMT, thewiz wrote:
I did my first backup to an external drive and it took hours. My hard drive is 500G. Will it take less time as it does the next backups? Just the other day I bought a small gizmo for backing up my "library" 1Tb HDD. This HDD has about 700Gb of data, mainly e-books and the like. This is a WD "My Passport" portable P/N WDBACX0010BBK-01 www.westerndigital.com My Ghost15 recognized it straight away, but it took 9 hours for the backup. The device is run solely on a USB3 / USB2 connection and this may account on the long time required. I's OK for me because I let it backup overnight. It cost about AUD$130, and I'll buy more later. It's about the size of a cigarette packet. |
#13
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length of backup
On Mon, 31 Oct 2011 00:01:17 -0400, WaIIy wrote:
On Sun, 30 Oct 2011 19:24:49 -0700, "Gene E. Bloch" wrote: On Sun, 30 Oct 2011 21:19:04 -0500, wrote: On Sun, 30 Oct 2011 16:48:47 -0500, Roy Smith wrote: On Sun, 30 Oct 2011 21:01:59 GMT, thewiz wrote: I did my first backup to an external drive and it took hours. My hard drive is 500G. Will it take less time as it does the next backups? It all depends on what kind of backup you make. There are 3 different kinds of backups differential, incremental, and full. A full backup will always take the longest to perform as it is making a backup copy of every file on the drive. Differential and Incremental backups both require that you make a full backup first, then what they backup differs slightly. A differential backup will backup any files that have been changed since the last full backup. This gives you an advantage when restoring files in that you only need 2 archives, the full backup and the differential backup. It won't matter if your differential backup is the first one created, or the 30th one, which ever one you use your system will be restored to the state the PC was in when that backup was created. An incremental backup makes a backup of any files that were changed since the last full or incremental backup. This has the advantage of taking less time to create a backup and are smaller in size than a full backup. The disadvantage is that when restoring your system with an incremental backup you'll need the full backup and all the incremental backups in between. So for example let's say you wanted to restore from your 5th incremental backup, you'd need the full backup and incremental backups 1, 2, 3 and 4 as well. This brings in the possibility of having one of your archive files being corrupted and causing the restoration to fail. So it's a good idea to verify the integrity of your backups especially when using this method. Thanks for the explanation of the different types of backup. Which would be fastest, a full backup or a clone of the drive. I was thinking that if the drive isn't full then a clone might be faster. Or slower. A full backup only writes the actual files that are on the drive, and most imaging programs compress the data (Macrium & Acronis do this), so less data is written. A clone does not (can not) compress the data, and besides, it might write every sector of the drive, so it would take longer, even a lot longer. Some clone programs don't write the unused sectors, but they still don't compress. Casper doesn't compress and the initial backup takes 30-60 minutes, give or take. Casper is a disk cloning program, which is why it acts like that. As for the time, see what Char Jackson said in his reply. Backups after that are very fast and just mirror the changes made to the primary drive. In other words, Casper does what some clone program makers call smart backups. Only the sectors that are (1) used, and (2) have been changed, are written to the clone. -- Gene E. Bloch (Stumbling Bloch) |
#14
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length of backup
On Sun, 30 Oct 2011 23:51:42 -0500, Char Jackson wrote:
On Mon, 31 Oct 2011 00:01:17 -0400, WaIIy wrote: On Sun, 30 Oct 2011 19:24:49 -0700, "Gene E. Bloch" wrote: On Sun, 30 Oct 2011 21:19:04 -0500, wrote: On Sun, 30 Oct 2011 16:48:47 -0500, Roy Smith wrote: On Sun, 30 Oct 2011 21:01:59 GMT, thewiz wrote: I did my first backup to an external drive and it took hours. My hard drive is 500G. Will it take less time as it does the next backups? It all depends on what kind of backup you make. There are 3 different kinds of backups differential, incremental, and full. A full backup will always take the longest to perform as it is making a backup copy of every file on the drive. Differential and Incremental backups both require that you make a full backup first, then what they backup differs slightly. A differential backup will backup any files that have been changed since the last full backup. This gives you an advantage when restoring files in that you only need 2 archives, the full backup and the differential backup. It won't matter if your differential backup is the first one created, or the 30th one, which ever one you use your system will be restored to the state the PC was in when that backup was created. An incremental backup makes a backup of any files that were changed since the last full or incremental backup. This has the advantage of taking less time to create a backup and are smaller in size than a full backup. The disadvantage is that when restoring your system with an incremental backup you'll need the full backup and all the incremental backups in between. So for example let's say you wanted to restore from your 5th incremental backup, you'd need the full backup and incremental backups 1, 2, 3 and 4 as well. This brings in the possibility of having one of your archive files being corrupted and causing the restoration to fail. So it's a good idea to verify the integrity of your backups especially when using this method. Thanks for the explanation of the different types of backup. Which would be fastest, a full backup or a clone of the drive. I was thinking that if the drive isn't full then a clone might be faster. Or slower. A full backup only writes the actual files that are on the drive, and most imaging programs compress the data (Macrium & Acronis do this), so less data is written. A clone does not (can not) compress the data, and besides, it might write every sector of the drive, so it would take longer, even a lot longer. Some clone programs don't write the unused sectors, but they still don't compress. Casper doesn't compress and the initial backup takes 30-60 minutes, give or take. The amount of time it takes is affected by the amount of data (or the size of the drive) to be backed up, among other things. The fact that it takes 30-60 minutes on your system doesn't say much about the time it would take on another system. Backups after that are very fast and just mirror the changes made to the primary drive. What you're describing are either incremental or differential backups. They were described above. In the world of cloning, it's called smart backup or smart cloning. Only the sectors that were changed since the last clone are written. Casper is a cloning-only program; it doesn't do images (unless they've changed it recently). -- Gene E. Bloch (Stumbling Bloch) |
#15
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length of backup
On Tue, 01 Nov 2011 09:23:35 +1100, Peter Jason wrote:
On Sun, 30 Oct 2011 21:01:59 GMT, thewiz wrote: I did my first backup to an external drive and it took hours. My hard drive is 500G. Will it take less time as it does the next backups? Just the other day I bought a small gizmo for backing up my "library" 1Tb HDD. This HDD has about 700Gb of data, mainly e-books and the like. This is a WD "My Passport" portable P/N WDBACX0010BBK-01 www.westerndigital.com My Ghost15 recognized it straight away, but it took 9 hours for the backup. The device is run solely on a USB3 / USB2 connection and this may account on the long time required. OK, is it USB2 or is it USB3? USB3 goes a lot faster, but you need a USB3 port to use it, oddly enough. I's OK for me because I let it backup overnight. It cost about AUD$130, and I'll buy more later. It's about the size of a cigarette packet. -- Gene E. Bloch (Stumbling Bloch) |
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