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Forum Discussion
RNDU2000-100NAS ??
I am considering buying a pair of RNDU2000-100NAS. From what I see and read ATM, this device appears to be the previous DUO elevated to an X86 (Intel) platform. Am I roughly correct?
If your going to use one Ultra 2 for your primary, I don't see why you don't use your current Duo for the backup. It uses NFS and rsync file protocols. It is a little slower in doing the backups than an Ultra, but once you have converted the backup to rsync, in normal conditions, it only takes minutes to synchronize the files in a share between the two units. Most of my nightly rsync jobs take seconds only (unless I have added a large number of files) so the speed of the Duo should not be an issue.
When I got my first NVX two years ago, I was backing it up to my NV+ for several months until I found a super deal on a second NVX.
The nice thing about the rsync process is that if you are using Windows and have your shares mapped to drive letters so that programs in Windows see the share as a drive, then all you have to do to shift everything from one NAS to the other is change the names. My NV+ was originally NAS1. Then my NVX Pioneer, once I had all the files transferred over was names NAS1 (after I had changed my NV+ to NAS2). All of my Excel and Word defaults now looked to the NVX rather than then NV+. Then I changed the backup jobs so they no longer went from the NV+ to the NVX, but from the NVX to the NV+. I did not have to reconfigure all the defaults in all of my windows programs this way.
The reason for NFS for the initial backup is that it does a straight copy of all the files. Incremental backups using NFS just copy the entire file (for those that have changed) over again. Rsync on the other hand checks for changes within a file and this makes the initial backup dog slow. However, instead of an incremental with the entire file copied over again, it synchronizes the two files by updating the file by copying over only the changes. I have four shares that are automatically rsync'd overnight and it normally only takes seconds to a few minutes unless there are a lot of additions or changes.
You could also go with the Ultra 4 with only two drives initially and spend less than you would with two Ultra 2's and 4 drives. Then when you finally are no longer able to back up your critical/important information to the Duo, add a second 4 bay ReadyNAS to your network and retire or rehome the trusy Duo. A very good friend of mine has my old NV+ which is now in it's sixth year of service, and I have two NVX units. I had planned to wait a while, but when the Ultras were being developed, there were some very good deals on the NVX models.
When I got my first NVX two years ago, I was backing it up to my NV+ for several months until I found a super deal on a second NVX.
The nice thing about the rsync process is that if you are using Windows and have your shares mapped to drive letters so that programs in Windows see the share as a drive, then all you have to do to shift everything from one NAS to the other is change the names. My NV+ was originally NAS1. Then my NVX Pioneer, once I had all the files transferred over was names NAS1 (after I had changed my NV+ to NAS2). All of my Excel and Word defaults now looked to the NVX rather than then NV+. Then I changed the backup jobs so they no longer went from the NV+ to the NVX, but from the NVX to the NV+. I did not have to reconfigure all the defaults in all of my windows programs this way.
The reason for NFS for the initial backup is that it does a straight copy of all the files. Incremental backups using NFS just copy the entire file (for those that have changed) over again. Rsync on the other hand checks for changes within a file and this makes the initial backup dog slow. However, instead of an incremental with the entire file copied over again, it synchronizes the two files by updating the file by copying over only the changes. I have four shares that are automatically rsync'd overnight and it normally only takes seconds to a few minutes unless there are a lot of additions or changes.
You could also go with the Ultra 4 with only two drives initially and spend less than you would with two Ultra 2's and 4 drives. Then when you finally are no longer able to back up your critical/important information to the Duo, add a second 4 bay ReadyNAS to your network and retire or rehome the trusy Duo. A very good friend of mine has my old NV+ which is now in it's sixth year of service, and I have two NVX units. I had planned to wait a while, but when the Ultras were being developed, there were some very good deals on the NVX models.
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