A New Kind of Home Computer: Windows Home Server Preview
by Ryan Smith on September 4, 2007 1:00 PM EST- Posted in
- Systems
WHS As A Backup Suite, Cont
As for restoring data, WHS comes with two options. The first is the traditional per-file restore, which can only be handled by a client. When a user/client wants to restore a file, they will pick the date/backup from which they want to restore the file, at which point the connector software will mount a dynamically-generated volume that is the contents of the client as of that backup. At this point the user can copy over files from the backup volume to their hard drive.
For a more complete restore, such as in the case of a catastrophic failure or those looking to use WHS as an image backup server, WHS ships with a live-restore CD. When the restore CD is inserted into a computer, the affected machine can connect to the WHS server and select a whole backup to restore. Since the operating system is included in the backup, it is also included in the restore, returning the machine to the same state it was in as of the backup. This process does however wipe the client's hard drive in the process, so it's not something that can be used leisurely. Power users that will be using it as a way to image and restore machines will especially appreciate the ability to restore to volumes of arbitrary size, and while Microsoft isn't pushing the imaging ability hard, it's one the best features of WHS.
There are a few caveats with the backup features of WHS that bear mentioning however. First and foremost only machines running Windows XP SP2 or Windows Vista x86 can be backed up. Older versions of Windows are not supported, and more surprisingly x64 versions of Windows are not supported. The WHS development team has cited the need to write drivers for the backup/restore abilities as the reason for the latter limitation, as they did not have the time to write a good set of drivers for both x86 and x64, so x64 support is not included for now. Unfortunately we don't have a good idea when such support will arrive; the development team for WHS is working on writing a version of the software for x64, but they are not saying when it might be ready.
Hardware constraints also need to be considered. Backups are transfer intensive, so anything less than a gigabit Ethernet link will cause the network to be the bottleneck. This is especially problematic for wireless links, which under 802.11g are practically capped to less than 6MB/sec (and realistically top out at under 4MB/sec), a fraction of the transfer rate of a hard drive. Microsoft highly recommends at least a 100Mb Ethernet link (forgoing a recommendation for wireless entirely), but wireless will work at the cost of being especially slow when WHS needs to do another full backup because it is ready to throw out the old one.
Last, there is the issue of doing backups at convenient times. A machine needs to be fully-on to be backed up, and WHS only has a limited ability to deal with AWOL machines and deal with machines that aren't currently on; it (or rather the connector) can wake up sleeping computers, but does not have a wake-on-LAN feature for waking up computers that are shut off entirely. An add-on exists that can handle this, but the only reliable way of backing up a machine at night is to leave it on or put it to sleep instead of turning it off. Sleeping however can be more problematic on an enthusiast computer than an OEM-built one.
With that said, it's very clear that Microsoft has put a lot of thought and their best technologies into the backup feature of WHS. Although this isn't a round up where we can adequately and fairly compare all the major backup software suites, we will say that we're very impressed with what WHS can do here. The backup features alone can sell WHS if the price is right as is the number of machines.
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Gholam - Sunday, September 9, 2007 - link
Yeah... "if properly implemented". I've got to see that "proper" implementation at work though.ATWindsor - Sunday, September 9, 2007 - link
Try a "pure" software-raid not connected to any of the onboard-solutions.AtW
Gholam - Sunday, September 9, 2007 - link
That ends up costing even more than a proper hardware solution - either in software licensing costs, or in time investment, or both.ATWindsor - Sunday, September 9, 2007 - link
If it where implmented in WHS, you have already bought the software, setting it up in raid5 is IMHO very easy if its done in a similar way as in win2003 (or possibly even easier)bespoke - Tuesday, September 4, 2007 - link
MS had an open beta for WHS, so I signed up. I installed the server software on an old 2.4 Ghz P4 with just 512 megs of RAM and it works well. I've not had any issues in the 3 months or so I've used it - my primary PC has been backed up faultlessly the whole time. WHS keeps about 10 to 12 revisions (increments, really) of my PC around, so if there ever has a problem, I have a large amount of backup points to restore from.I can see this software (or a complete package - HP will be coming out with a line of small boxes with WHS preinstalled) as being a great thing for a geek to setup for non-techie family members. Seamless and invisible backups along with an easy to use file server shold make this a win.
leexgx - Tuesday, September 4, 2007 - link
WHS mirroring of files is more then raid 1was reading it an little fast but have you tryed simply adding disks and removeing them its Very easy to do as it has an Wizard that makes it alot easyer
allso each disk is in NTFS format (thay are mounted as Drive folders) so if the boot disk broke (as for some Very strage resone the fist disk is 20gb boot and the rest storage that make it Alot harder to fit an bigger disk on the boot drive)
tested it in VMware with 4-7 disks what is Strage is the prerequest that the fist disk Must not be scsi only IDE or Native Sata mode (not Raid Sata mode) for the boot disk
good review tho
leexgx - Tuesday, September 4, 2007 - link
allso the backup is not so hot for adv users who do not want to do the whole pc as i could not find an option when i was testing it to Pick dir folders I want backing up as by default it selects all folders apart from temp ones and give you No option to goto Pick an folder mode all you can do is Pick what folders you want Not to back upRyan Smith - Tuesday, September 4, 2007 - link
You can select folders for exclusion when configuring the backups.leexgx - Tuesday, September 4, 2007 - link
i all ready explaned that problem you can't pick all of them at once you have to add each root folderi want to be able to Pick an folder insted of haveing to go the longwinded way of haveing to exclued all the folders
BigLan - Tuesday, September 4, 2007 - link
Nice preview of WHS. I'm intrigued by it and have the RC but didn't get around to installing it and playing around.For me, the mce issue is the biggest sticking point and hopefully WHS2 will include a recording engine which mce boxes can connect to. I hear the both sage and beyondTV can be run on WHS with the appropriate link software, but it's extra cost to people with vista home premium boxes, and doesn't work well with a 360. For existing sage or BTV users WHS could be worth it, in my case because I could move 3 hard drives out of the case in my living room and into a PC in a closet.
The backup features sound great though, and are what I want most. It sounds very simple to use as well.
I wonder if whs2 will include a roaming desktop feature so a user can log in to any machine and have everything ready and waiting for them. It sounds like their 'my docs' folder is being copied to the server, so hopefully MS will include this in the next release.