101–110 of 113 posts
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You gradually replace one disk at a time, resilver then repeat. ZFS automates most or all the work mentioned in this article and it comes with built-in bitrot detection. Btw I have run a NAS similar to this machine for 6 years now using FreeNAS. It’s awesome.
So if I have 4x4TB drives and switch a drive so it's now 3x4TB + 1x6TB, and do the resilver, will the ZFS capacity be increased by 2TB?
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>backup is too expensive, so investing into robustness and availability is the only option left. No please don't say something like that if you love your data. Raid is for the availability of your data, a Backup is the secure storage/versioning of you data, two completely different things.
My love for my data has a price tag :-) If I afford backup with this amount, I need to cut down on other expenses in my life.
For example, my irreplaceable photos (probably around 3TB worth) get packed into year-based TAR files, then uploaded to Glacier Deep Archive. It's only around $3 USD a month.
I won't have to care about retrieval cost for the moment, because I think I'll only need to touch it in the event of a catastrophe.
Most media files and Linux ISOs don't get backed up at all.
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So if I have 4x4TB drives and switch a drive so it's now 3x4TB + 1x6TB, and do the resilver, will the ZFS capacity be increased by 2TB?
No not until you have replaced them all.
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Synology OS is a modified Linux and it uses mdraid for RAID. There is no hardware RAID, and very little closedsource bullshit. This is how you'd mount a synology array in a Linux server: https://www.synology.com/en-us/knowledgebase/DSM/tutorial/St... - it's basically two terminal commands after all the preparation stuff. I believe QNAP uses mdraid as well but I haven't had any experience with those.
>Synology OS is a modified Linux and it uses mdraid for RAID. Yes and that raid destroyed itself many times which btw never happened to me on a self-installed Linux.
I'm sorry you've had the misfortune of encountering such problems.
I've been using Synology/Xpenology (a fork of their GPL bootloader) for 8 years, and it's still going great for me.
The problem with extensibility here is the fact that the enclosure is limited to four drives. Growing the capacity is quite hard but probably necessary considering the RAID 6 only gives you two HDDs worth of usable storage.
I have worked around that with external USB drives. Which is very slow :-(
A NAS seems like a nice way to consolidate my photoalbums and have redundancy in terms of physical storage. But that whole cloud thingy is something I don't need, heck, I don't want! I would say that a good router is the way to go and I think I should replace the one my ISP has given me. Can anyone point me in the direction for a guide to a hardware router and appropriate firmware, so I can be sure to control what th…
If you're looking to build something more powerful, OPNsense on an x86 box is the way to go. I also think that the interface is much more intuitive compared to OpenWRT's.
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> Moral of the story: If you are depending on certain hardware features, you need to have a cold spare available with identical hardware and firmware. If you cannot afford one, it's better to either use a software implementation, have a really good service contract with the vendor or just let a VM provider take care of your infrastructure. +1 for this. Hardware raid absolutely has its place, but if you expect to be a…
>Also, RAID is not a backup. RAID provides high(er) availability. You need to have backups still! Absolutely true. In this case we underestimated the workload caused by the service tag and firmware version issues and the fact that the new controller wanted to check and rebuild the array, when the disks themselves should have been fine. In hindsight it might have been faster to reinstall the OS and services plus resto…
I don't understand why anyone would do this instead of running FreeNAS. It comes with everything you need including ZFS pools.
FreeNAS is great but last time I checked it didn't support the Opteron based microservers from HP. I don't know if this has changed in the past few years but it's why I went Linux on mine.
https://www.servethehome.com/hpe-proliant-microserver-gen10-...
the 10+ seems to run freenas fine.
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>Synology OS is a modified Linux and it uses mdraid for RAID. Yes and that raid destroyed itself many times which btw never happened to me on a self-installed Linux.
> Yes and that raid destroyed itself many times which btw never happened to me on a self-installed Linux. I'm sorry you've had the misfortune of encountering such problems. I've been using Synology/Xpenology (a fork of their GPL bootloader) for 8 years, and it's still going great for me.
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I have worked around that with external USB drives. Which is very slow :-(
Do you include your external drives in your RAID-6? That sounds dangerous.