Backing up

01rich01

New Member
Recently I had to format my hard drive which resulted in me loosing everything. I figured this is a good point to A: Use some kind of backup, and B: Switch to Vista.

The main thing I use my PC for is gaming and browsing the net, but I am going to uni soon so there will be important stuff I can't afford to loose.
I've been thinking of a few options, but not sure which would be best or even if they are all possible.

For backing up files I was thinking of using a raid 1 configuration, so that If I needed to format again I would have duplicate of the original drive. But if I did decide to do this could I use an internal SATA drive / external USB drive combo, or does it have to be two SATA ones? My mobo manual says you can use an existing drive with a new drive with the same size or higher, but doesn't specify what type.
The reason I ask is because I found a 500GB USB drive with a faster transfer rate, same cache, and about the same price as my current 320GB SATA one + it would be one less thing inside my PC.

The other complication could be if I dual boot XP and vista using a a single drive partitioned in half, could I still then raid 1 that whole physical drive (with both XP and Vista partitions) with the external drive?

Another thing, in the tutorial sticky's at the top it says raid 1 takes (theoretically) twice as long to read from the disk, but why can't it just read from one drive seeing as they are the same?
 
USB external hdd's are always going to be slower than sata drives. What's the cache on the usb? The cache is the main thing you want to look at and transfer rate which is 1.5 or 3 gbps.
 
My current SATA drive has:
16Mb cache
Transfer rate 300Mbps

The External USB one I'm looking at has:
16Mb cache
Transfer rate 480Mbps

So the external one will be actually be reduced to 300Mbps in a raid 1 config.
The only thing I can think of that might make the USB one slower is the average seek time. The SATA one is 8.5ms whereas the USB doesn't say - Maybe due to the way they work, I'm not sure.
 
Another thing, in the tutorial sticky's at the top it says raid 1 takes (theoretically) twice as long to read from the disk, but why can't it just read from one drive seeing as they are the same?
That's 2x as fast in theory. Not 2x slower. If you are RAIDing a USB drive with an internal drive, you will be using software RAID and I'm fairly sure you will get single drive performance (ie. the software raid wont read from both disks to improve speed).
My current SATA drive has:
16Mb cache
Transfer rate 300Mbps

The External USB one I'm looking at has:
16Mb cache
Transfer rate 480Mbps
That would be 300MB/s (megabyte/second) not 300Mbps (megabit/second).

In any event, don't RAID an external drive with an internal, it's just silly :P

If you want to backup your data make a backup script that copies data periodically to your external drive or get backup software to do it. RAID1 isn't backup, it's fault tolerance.
 
Yea I think you're right, using backup software sounds easier. So If I dual boot XP and Vista, can you change the size of partitions without having to format?
My idea is to partition it 50/50, then if I decide I like Vista i will change the partitions to e.g. 25/75 then eventually delete the XP partition.

Or would I have to Partition it say 20/20/60 with the third value being un-partitioned space, then add that space to which ever drive I decide to carry on with?
Do you have any recommendations of back up software to use with the USB HD?
 
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