Bill - what happens if a HDD in your main N5200 fails? I suppose you have to replace it and the restore from your backup N5200. Or are you somehow running both N5200s side-by-side so that if one fails then the other continues on?
The devices that are accessing the N5200 are using UNC paths - so if the Server1 has a problem, I just rename it to something temporary (Server3), rename Server2 (the backup N5200) to Server1, and I am back online. Then replace the broken hard drive, and run a backup to what is now the new backup server.
Did this once when I upgraded hard drives. Of course, there is a window of time when the first server is down during which there is no effective recovery possible. Critical data remains protected by periodic backup to DVD-R and offsite storage.
Post by singaporeguy on Jan 17, 2008 9:19:28 GMT 7
Build my N5200pro with 5 X Western Digital WD7500AAKS 750GB drives running RAID 5
Now that my Thecus is about 90% full with all my video files, I am pretty scared to lose my data and 6 months of work. Considering getting a 4-bay non-raid enclosure (to attach to my pc) to backup my files from the Thecus. Once I do that, I wonder if it is still necessary to keep the Thecus in RAID5? What about re-configuring it to JBOD so I can have more capacity since I already have another backup of the data on the other enclosure? Since it is for home (video/music streaming) and not office, I won't mind the downtime on either of the device if a disk fails and I have to replace the disk, reformat and copy the data from the other device.
Question for bill: If you have 2 storage device both running RAID 0 to back up each other, then if any 1 HD in each device breaks down during the same period (before you can do the restore), then ths risk of losing all the data is high. If you run them in JBOD, then you the risk is slightly lower as you only lose data on 1 HD if the same disk# (e.g. disk#3) fails on both devices during the same period. The cons is that JBOD is slightly slower than RAID0 and slight more inconvenient as you have 5 mount points instead of 1.
Post by lighttraveller on Jan 14, 2009 5:38:56 GMT 7
Running a 5200 in RAID 1, with 1TB (2x500, mirrored, hotspare).
I started with RAID 5, but found that my users' CADD applications were bogging down noticeably. (Lots of network R/W from the workstations, and with big files.) Projects that included a lot of field survey data, in particular, became a real problem. This had never happened when that data was just stored on the Win2000 server.
I figured I may as well try a different RAID config before declaring the device unsuited for our uses, and level 1 seemed to clear it right up.