January 15, 2009 7:53 AM
Inferno said: Thanks for the insight i'll order up 2, however you put a mokey in the wrench? What is the purpose for folder duplication? I'm new to server managing and operation. Thanks again
Folder duplication is a software implementation of RAID-1, mirroring. You can selectively tell the WHS to duplicate data in a folder so that the files reside on both disk drives in your unit. If a disk were to fail your data, in theory, should still be safe. You replace the failed disk and the data is once again duplicated over the two disks. Of course, there is exposure while you replace the failed disk but that can be done pretty quickly. In a real "production" type environment you would normally have a spare disk on-board, or at least on-site, to immediately replace the failed disk. This being the home market I don't expect most folks would do that; the nearest Best Buy would be your quickest bet. The one real nice thing about folder duplication is that you can selectively decide which folders to duplicate instead of the whole disk drive although in practice I would suspect people think everything should be duplicated. The downside is that it's not as seemless as hardware RAID. On other precaution, the area used to backup you attached PCs is NOT duplicated so there is exposure to loosing these files although the theory is that you would not loose you PC harddrive simultaneously so you would just replace the sever drive and then re-backup all your attached PCs.