February 23, 201115 yr Yes. Transfer data then add parity. Check your data to make sure its readable correct before deleting the originals. I.e., spot check audio and video files to make sure they are playable. The paranoid cautious calculate CRC checks on all data transferred but this will take twice as long.
February 23, 201115 yr If you are not deleting your source files as you transfer I recommend using a data drive without parity while transferring the files using TeraCopy or some other program with file verification. After all files are transferred then you need to do two things. The first is assign the parity drive and let it finish calculating parity. The second is to do a parity check. Without the parity check you have no idea if the parity calculated is actually correct. I will probably delete them after it is done but want to make sure it is working first. thanks for the info! Which version of teracopy should I use? some seem to be beta
February 23, 201115 yr Yes. Transfer data then add parity. Check your data to make sure its readable correct before deleting the originals. I.e., spot check audio and video files to make sure they are playable. The paranoid cautious calculate CRC checks on all data transferred but this will take twice as long. ugh ive never done any of this lol.. sorry for stupid questions. How do I spot check? CRC? edit: nevermind... so teracopy should do CRC right... is that the same as spot check?
February 23, 201115 yr Author Google Teracopy and install it on your PC. Teracopy will calculate CRCs. Spot checking means you test some files randomly. I spent many days ripping DVDs to unRAID and it was would have been unbearable for me to double the transfer time. I used teracopy to calculate CRC for about 10% of my rips. They all checked out OK and I'm comfortable that the remaining 90% are good. Besides if I find a bad files later I can always re-rip it. If your data is really important you should maintain DVD copies of the originals and backup off-site.
February 23, 201115 yr Google Teracopy and install it on your PC. Teracopy will calculate CRCs. Spot checking means you test some files randomly. I spent many days ripping DVDs to unRAID and it was would have been unbearable for me to double the transfer time. I used teracopy to calculate CRC for about 10% of my rips. They all checked out OK and I'm comfortable that the remaining 90% are good. Besides if I find a bad files later I can always re-rip it. If your data is really important you should maintain DVD copies of the originals and backup off-site. yeah I googled it! thank you... ok I thought that was what spot checking was but just making sure Ok so on the teracopy site it says it makes copies faster but it actually takes longer? Or are you saying you used teracopy to copy 10% then the rest just moved them? Should I use TeraCopy 2.2 beta 3
February 23, 201115 yr Author I used the latest final release. I copied all of my files using teracopy. The CRC check is optional. Also, you can use Teracopy to compare a local and remote versions of a file after copying is complete. I enabled CRC verify for about 10% percent of my files. You can verify all, none, or anything in between, its up to you.
February 23, 201115 yr I used the latest final release. I copied all of my files using teracopy. The CRC check is optional. Also, you can use Teracopy to compare a local and remote versions of a file after copying is complete. I enabled CRC verify for about 10% percent of my files. You can verify all, none, or anything in between, its up to you. ok get it now thanks! I only have like 700gb or so worth of data to copy over at the moment. How long would that take using CRC check on all of it?
February 23, 201115 yr my second drive is on 83% complete of the post-read process. It is going very slow though is there a way I can cancel it to just get this started or is that not recommended? I am pretty sure it is fine.... just don't feel like waiting another 2-3 hours
February 23, 201115 yr Author The post read is required to verify that the disk was zeroed correctly. Don't stop it. CRC check requires that all written data be read back in order to calculate CRC. It will double the time if your using a cache drive. If not, then the read will be a lot faster than the write. Start it, go to sleep and it should be done with CRC by morning or at worst by the time you get home from work.
February 23, 201115 yr The post read is required to verify that the disk was zeroed correctly. Don't stop it. CRC check requires that all written data be read back in order to calculate CRC. It will double the time if your using a cache drive. If not, then the read will be a lot faster than the write. Start it, go to sleep and it should be done with CRC by morning or at worst by the time you get home from work. Got all my movies on and now doing tv shows... it is only going like 8.8 mb/s is that normal when doing the CRC check? Also I set up user shares for movies and tv shows but I only have one data disk right now. I left split level blank and kept allocation on high water. What should it be for only one disk?
February 23, 201115 yr What should it be for only one disk? Those settings are mostly useless for use with only one disk.
February 23, 201115 yr What should it be for only one disk? Those settings are mostly useless for User Shares. ? Do you mean if it is just one disk? I thought those settings were FOR user shares?
February 23, 201115 yr ? Do you mean if it is just one disk? I thought those settings were FOR user shares? Thank you for pointing that out, I corrected it above. This is exactly why I should not try to open so many topics at the same time...
February 23, 201115 yr ? Do you mean if it is just one disk? I thought those settings were FOR user shares? Thank you for pointing that out, I corrected it above. This is exactly why I should not try to open so many topics at the same time... haha hey, everyone has to make a mistake sometime...
February 23, 201115 yr Author The post read is required to verify that the disk was zeroed correctly. Don't stop it. CRC check requires that all written data be read back in order to calculate CRC. It will double the time if your using a cache drive. If not, then the read will be a lot faster than the write. Start it, go to sleep and it should be done with CRC by morning or at worst by the time you get home from work. Got all my movies on and now doing tv shows... it is only going like 8.8 mb/s is that normal when doing the CRC check? Also I set up user shares for movies and tv shows but I only have one data disk right now. I left split level blank and kept allocation on high water. What should it be for only one disk? If you 8.8MB/s (big B for Bytes, little b for bits) then it is normal when using 100Mbps Ethernet.
February 23, 201115 yr The post read is required to verify that the disk was zeroed correctly. Don't stop it. CRC check requires that all written data be read back in order to calculate CRC. It will double the time if your using a cache drive. If not, then the read will be a lot faster than the write. Start it, go to sleep and it should be done with CRC by morning or at worst by the time you get home from work. Got all my movies on and now doing tv shows... it is only going like 8.8 mb/s is that normal when doing the CRC check? Also I set up user shares for movies and tv shows but I only have one data disk right now. I left split level blank and kept allocation on high water. What should it be for only one disk? If you 8.8MB/s (big B for Bytes, little b for bits) then it is normal when using 100Mbps Ethernet. well I have a gigabit router which my server is connected directly to and my computer transfering the files toit is wireless and getting 150Mbps So I am guessing then 8.8MB/s is ok?
February 23, 201115 yr Author Yes that is good for wireless. Note that wireless performance may vary.
February 23, 201115 yr Does teracopy do CRC every time you COPY something? Couldn't figure out how to turn it off
February 23, 201115 yr I split this thread into its own title. The last two pages of messages had absolutely nothing to do with unmenu or pre-clearing disks. Joe L.
February 23, 201115 yr I split this thread into its own title. The last two pages of messages had absolutely nothing to do with unmenu or pre-clearing disks. Joe L. thanks! I was just using it for all my questions
February 24, 201115 yr Author Does teracopy do CRC every time you COPY something? Couldn't figure out how to turn it off I'm using version 2.12. Start TeraCopy, hit the More button, Select the Menu button, and choose Options. There is a setting called "Always test after copy"
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