| To: | Brandon Lamb <brandonlamb@xxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-users] Just some (probably useless) information |
| From: | Grant McWilliams <grantmasterflash@xxxxxxxxx> |
| Date: | 2010年3月20日 09:58:29 -0700 |
| Cc: | xen-users@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | 2010年3月20日 10:01:10 -0700 |
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I did a very non scientific test for speeds of backing up disk/file
images to disk/file backups
I used lvm for both the disk based and to put the files onto during
the test. I used four 640gig sata 3.0gbps drives in a raid 10. There
was 2083 megabytes used on the filesystem, a windows xp install.
dd disk -> disk = 36 minutes
ntfsclone disk -> disk = 4 minutes
ntfsclone disk -> file = 2 minutes
cp file -> file = 11 seconds
So now I am left with the question of do I use file based images which
will have slower performance but super fast backup times, or go with a
lvm -> disk/file for the backup.
My particular use case will be a user gets a 20 gig drive for xp,
their it guy will do manual image backup creation. If they blow up
their windows box we will have a "click click" ok now they are running
againback up using the backup disk/file image. If I use all disk based
images then I will have to also create a file backup of the backup
disk for my remote backup box to save in case the host dies.
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