Originally Posted by Vindii
Sounds like it should work that way. Have you or anyone tried it and had it work? I was leary about installing with the data drives connected as I was afraid it might wipe them clean.
It did offer the Re-install the second time and I did the reinstall. It did not detect the existing drive pool though. Maybe due to sata card drivers not being connected? Maybe due to the fresh install with one drive? Not sure what.
I just really wnat to know what to do next time becasue this OS drive will fail someday. Can you confirm that what you have above will work? I don't want to find out the hard way that all the data drives get wiped trying to re-install.
Also what about the data stored on the data partition of the OS drive? If this work like you have written above will that data get rewritten from the duplication info on another drive when the poolm is rebuilt?
I would rather get most of my data back the hard way then to have this not work and lose it all.
Yep, it will work this way, but as I mentioned you need to be sure the hardware environment setup is correct before re-install/repair. Checking the bios boot order is very important because this will change when you replace drives.
2 things that caused the reinstall not to function correctly for you was that you already re-installed it on a fresh drive with no other data/drives present and the SATA drivers were also not available to the installer so it could see the DATA drives.
There is no data stored on the 20GB C:\\ OS partition other than the OS files and the database/tombstones pointing to the data drives, which get recreated on a reinstall if the DATA drives are present during reinstall/repair scan.
I guess the main thing we shouldn't overlook is that you didn't lose any data during the process regardless. You were still able to connect the data drives, read them independantly, and drag and drop copy what you wanted from the DE folder into the new install.
The more I learn and understand about WHS the more I see it's potential. Like anything else it's not perfect, but there's some minor precautions you can take to protect against those weaknesses.
IMHO, WHS needs a 4 drive config as minimum to satisfy these conditions using the following config.
Drive 0 + Drive 1 (raid 1 mirror) - Main OS drive (2 x same drive)
Drive 2 WHS storage pool
Drive 3 WHS storage pool
I always use a raid 1 mirror for any server OS drives. Not everyone agrees with this, but to me it makes sense. Raid 1 is simple. There's no striping. It just seemlessly duplicates the same data in realtime on both OS drives. You can literally yank one of the drives out and the system keeps running.
When you think about it regardless of the OS installed, if the main drive were to fail while the server is live every running process risks getting corrupted. Things like VMs, databases, files, registry hives, system journaling...
Most mobos have onboard ICH9/10R raid which is great for R1. If not a 2 port raid card for R1 is dirt cheap otherwise an 8 port LSI, using 2 ports for R1 and the remaing 6 for plain SATA ports is another very inexpensive means of protection.
The cost of an additional WD6400AAKS ($70) + 2 R1 ports(either free onboard or $20-30$) totals under $100, but consider the peace of mind and time and hassles saved if one of those 2 OS drives failed.
But like most things, it's a personal choice that not everyone will agree on.