It even asked me if I wanted to format the drive… of course, my answer was no. Of course, at this point Windows can’t read the USB. And guess what? I was dumb enough not to make a backup of the config file or the boot USB itself.Īt this point, I suspect the USB boot partition has some issues, so how do I get the server up and running while not having physical access? First, I asked someone to plug in the boot USB into the nearest computer, and run Teamviewer. I personally haven't really notice any performance impacts at all.So I set up a FreeNAS server 15 months ago, but now I live >7000km away and it decided to kick the bucket. I am at 86% usage on one of my pools, anything over 80% is when they say your will start to see performance impacts. you can't delete a single file in a snapshot, you would have to delete the entire snapshot. I should point out snapshots are read only. Once all snapshots that contain that file have been removed then that 1GB file will be removed and I will have 9GB used. For example If I have a dataset that is 10GB and just had a snapshot taken, if I delete a 1GB file out of that dataset it will remain 10GB because I have snapshots that still contains that file. Snapshots don't take up any space until the data they are pointing to has been changed or removed. It depends on how much your data is changing. If I have a 3x3TB in RaidZ1 for 6TB of usable storage and have it filled up with 5TB of storage, will I suffer any performance loss? General rule we go by is reserve 20% of space for snapshots.įor ZFS snapshots, how big does the storage need to be compared to the original volume? IE if I have 2x3TB drives mirrored together for 3TB of redundant storage for my NAS, how big of a single HDD do I need to keep a decent amount of snapshots?Īlso, I heard ZFS doesn't do so well when the pool starts to get near capacity. NAME AVAIL USED USEDSNAP USEDDS USEDREFRESERV USEDCHILD New read-only file system properties describe disk space usage for clones, file systems, and volumes. You can identify additional information about how the values of the used property are consumed. Additionally, deleting snapshots can increase the amount of disk space unique to (and thus used by) other snapshots.Ī snapshot's space referenced property value is the same as the file system's was when the snapshot was created. As the file system changes, disk space that was previously shared becomes unique to the snapshot, and thus is counted in the snapshot's used property. When a snapshot is created, its disk space is initially shared between the snapshot and the file system, and possibly with previous snapshots. As long as the file existed when a snapshot was taken it is saved for 6 months. At any time I can go back and find a file that has been deleted or edited within a 6 month period. ZFS has all of that built in with snapshots.įor example I can setup a dataset to do a snapshot every 12 hours and keep the snapshot for 6 months. I do this to very critical datasets, works really well.Īs for you version chaining backup your talking about. You also need to readup on replication Tasks Replication task are meant to be sent to another server but you can just send the task to itself. You will need to enabled snapshots on the dataset you want to replicate as freenas uses snapshots to send the data. You can plug the external drive into freenas and setup a zfs pool on that drive and just use the standard replication tasks in the freenas GUI to replicate a ZFS dataset. Don't expect running the little setup wizard to setup everything you want. (Don't be scared off by this) It is perfectly do able it just might take a little more time to figure out how to setup everything. Is this possible?įreeNAS isn't exactly user friendly, as it is meant for enterprise environments run by a dedicated IT person or team. As for the NAS backup, I want something that can do a version chain, like differential backups so I can pull a deleted file or older version from a month back, also to an external HDD or low end NAS. So if I add or removed a movie/pic, I want that change reflected on the backup when it runs that evening. One is for my movies & pictures and I just want it to sync with an external HDD or low end NAS box. However, everything I have read is that backups are a PITA on FreeNAS and most recommend a 2nd server, which I do NOT want! I need 2 types of backups. I really want to run a FreeNAS server to host my Plex server as well as act as a NAS, mainly due to ZFS.
0 Comments
Leave a Reply. |