alphazo

Just to post another success story on moving from ReiserFS to XFS. Well it took some time (14 disks) and I only used rsync, hashdeep (found in md5deep package) and vim (not on unRAID). Basically I did for each disk and in parallel using multiple screen sessions. diskX is the source (rfs), diskY is the destination (XFS) diskZ is a scratch area to save the checksums. mkdir /mnt/diskY/diskX rsync -av --stats --progress /mnt/diskX/ /mnt/diskY/diskX cd /mnt hashdeep -r -l -e diskX > /mnt/diskZ/hash-diskX-source cd /mnt/diskY hashdeep -r -l -e diskY > /mnt/diskZ/hash-diskX-copy Then it was time to compare the hashes before wiping out the source disk. Since the hashes are not written in the same order. There might be more elegant way to sort and clean the top of the file but I just used vim (on my PC and not unRAID) for that. vim /mnt/diskZ/hash-diskX-source Then I needed to remove the 4-5 top lines 5dd Then sorted the hash list :sort :wq Same Vim operation needs to be done with /mnt/diskZ/hash-diskX-copy After that diff can be used to verify that the copy is perfect. diff /mnt/diskZ/hash-diskX-copy /mnt/diskZ/hash-diskX-source If the diff operation doesn't return anything bad then you are good to go for: Formatting diskX Moving everything from /mnt/diskY/diskX to the root of /mnt/diskY (this can be done with mv and doesn't take any time Move to the next drive I recommend to keep a spreadsheet handy so you can track the actions to run especially if you run concurrent rsync and hashdeep operations. I do recognize that going through the hashing is a bit extreme and paranoid but heck it doesn't hurt as well.

I just moved from a Chenbro ES34069 with 4 drives to a Norco RPC-450B based hardware with 10 drives (max 15 drives). I wanted a device that could hold more drives with a good air flow. I don't really care about hot-swap drive bays (too expensive and unRAID doesn't support hot-swap today) but also didn't want to spend too much time building my own drive bays. Furthermore I wanted something both heavy and not eye-catching so a potential "visitor" would be less tempted to take it over. As this beast is going in my garage, noise is less of an issue. I looked around and couldn't find any nice industrial chassis that would fit many drives out of the box. Then I found the Norco RPC-450B that would hold 10 drives with no screws have two front 120mm fans. It even has room for additional drives as there is an empty 3x5.25" bay. Priced at $78 this sounded a too good deal. Well I did pay that amount but living in Europe I also payed more than $100 for shipping and guess what the parcel got returned to the US the first time so I ended paying even more for a Fedex delivery. Assembly went well, built quality is ok but nothing like a Lian Li case. First things I replaced were the front fans (way too loud even for a garage). The result is acceptable but due to the two grids and dust filter in front of each them, the case is not quiet. Performance was up compared to previous Atom based platform but mostly on the write speed. I guess at the moment read speed is limited by the client PC. Last thing, I do recommend those metal grip SATA cables. They make your life much easier (and safer) when playing around with drives and SATA controllers. Norco RPC-450B (10x3.5" drive bays with screwless rails and 3x5.25" drive bay) SuperMicro C2SEA motherboard Intel Celeron 430 Stock heatsink (I initially planned for a full Ninja2 but it was too big for my taste and the 35W Celeron is cool) Kingston HyperX KHX1333C7D3K2, 2x1GB memory Corsair TX650W power supply Adaptec 1430SA 4-port SATA controller card 2x Enermax UCMA-8 100080-101, 34CFM, 21dbA fans (rear) 2x Scythe SY1225SL12M, 68CFM, 24dbA fans (front) 10x Metal grip 50cm SATA cables http://www.pc-look.com/boutik/Prod_Sharkoon_SATA-Cable-Metal-Grip-050-cm-Red-__18998_en.html 2x SATA Power Supply Splitter http://www.pc-look.com/boutik/Prod_InLine_SATA-Power-Supply-Splitter-015-cm__37572_en.html 2x 500GB WD Caviar Green HDD 1x 500GB Samsung HD501LJ HDD 5x 1.5TB Samsung EcoGreen HDD 2x 1.5TB WD Caviar Green HDD Overview Screwless drive bay Random pictures Full photo gallery here: http://bit.ly/cCxpMP