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Available hard disk memory. Only half showing available.
I just bouht a ReadyNas 102 2-bay system. It has 2-2 GB HDs in each bay. When I look at the overview on the admin page only 1.8 GB is availble. Likewise when I look at the system at ReadyCLOUD ...
Bourbonbill wrote:
But I will be keeping all my photos and music on the NAS and I'm concerned if I should back up the NAS as well.
The short answer is "yes you should". The RAID mirror is NOT a backup.
Some common scenarios -
-There is an unexpected power failure that brings down the NAS. The file system ends up in a corrupted state and your volume is lost. Mirroring doesn't help- the disks are synced, so both copies end up corrupted in the same way.
-You make mistake and accidentally delete some precious photos. Oops.
-Both disks fail in rapid succession (which sounds rare, but does happen).
-You have a fire, flood, nearby lightning strike, or theft.
-a hacker or malware hijacks your data (e.g., something like Cryptolocker)
Bourbonbill wrote:
Seems like a third copy would be redundant.
By definition backups are redundant. Hopefully the info above will explain why I don't count RAID as one of the copies. Also, I'm using RAID-5, not RAID-1 - which works very differently, and is not creating a mirror.
I started backups long before I had a NAS - and unfortunately have had to use them from time to time. I learned the hard way that sometimes the backup wasn't readable. I've never lost data once I began the "3-copy" policy. So I continue to keep least 3 local copies (including the original) of everything, all on different devices. Though it costs some money up front, it is far cheaper and more certain than data recovery later on (not to mention the family fallout from losing the photos). Today my main NAS is a Pro-6, and I back it up to other NASes.
I also use cloud backup (CrashPlan) for disaster recovery - for ~$60 per year, it was a no-brainer. Though there have been some bumps in the road with them over the past few months, I still think its a good deal. I don't yet trust cloud backup enough to cut back from three local copies to two.
It probably doesn't make sense to run CrashPlan on an RN102, but you could potentially run it on a PC or a Mac (and there are some tricks that will let you back up the NAS from the PC/MAC).
So, with the 2 disks in the RAID-1 setup being mirrored and sync'd automatically should the NAS drive be backed up as well. Seems like a third copy would be redundant.
I understand about backing up my other computers to my NAS. But I will be keeping all my photos and music on the NAS and I'm concerned if I should back up the NAS as well.
Bourbonbill wrote:
But I will be keeping all my photos and music on the NAS and I'm concerned if I should back up the NAS as well.
The short answer is "yes you should". The RAID mirror is NOT a backup.
Some common scenarios -
-There is an unexpected power failure that brings down the NAS. The file system ends up in a corrupted state and your volume is lost. Mirroring doesn't help- the disks are synced, so both copies end up corrupted in the same way.
-You make mistake and accidentally delete some precious photos. Oops.
-Both disks fail in rapid succession (which sounds rare, but does happen).
-You have a fire, flood, nearby lightning strike, or theft.
-a hacker or malware hijacks your data (e.g., something like Cryptolocker)
Bourbonbill wrote:
Seems like a third copy would be redundant.
By definition backups are redundant. Hopefully the info above will explain why I don't count RAID as one of the copies. Also, I'm using RAID-5, not RAID-1 - which works very differently, and is not creating a mirror.
I started backups long before I had a NAS - and unfortunately have had to use them from time to time. I learned the hard way that sometimes the backup wasn't readable. I've never lost data once I began the "3-copy" policy. So I continue to keep least 3 local copies (including the original) of everything, all on different devices. Though it costs some money up front, it is far cheaper and more certain than data recovery later on (not to mention the family fallout from losing the photos). Today my main NAS is a Pro-6, and I back it up to other NASes.
I also use cloud backup (CrashPlan) for disaster recovery - for ~$60 per year, it was a no-brainer. Though there have been some bumps in the road with them over the past few months, I still think its a good deal. I don't yet trust cloud backup enough to cut back from three local copies to two.
It probably doesn't make sense to run CrashPlan on an RN102, but you could potentially run it on a PC or a Mac (and there are some tricks that will let you back up the NAS from the PC/MAC).
Thanks!for nice sharing.Actually avaiable hard disk memory is new topic for me.Please share more information about hard disk memory.
Mizanur812726 wrote:
Thanks!for nice sharing.Actually avaiable hard disk memory is new topic for me.Please share more information about hard disk memory.
I'm not sure exactly you mean. Can you rephrase to clarify? Are you looking to understand RAID better, or something else?
Thanks for the help. I will deffinitley start working on a backup solution for my NAS. Untill I can afford another NAS drive I'm going to use my external hard drives plugged into the USB ports on the NAS. I'm transfering the files from the HDs so for the time being I know I have enough room to backup to them.
Thanks again. I really apprciate the time you took to explain this simply to a newby.
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