Which RAID configuration did you select and why? Going to be setting up my DS1815+ this week using 5 WD 4TB RAID drives.
Which RAID configuration did you select and why? Going to be setting up my DS1815+ this week using 5 WD 4TB RAID drives.
RAID 1. I have a Synology DS716 II+ with 2 WD Red Pro 3 tb drives...why...my only option with just 2 bays.
Use the "Synology Hybrid RAID" (SHR)
Use the "Synology Hybrid RAID" (SHR)
One more thing to keep in mind. please back-up your NAS regularly. RAIDx (be it 0,1, or 10,etc) can and do fail at times resulting in corrupt data. IOW you may not be able to play the entire content of most pieces or simply not play anything recognizable.
Another thing with RAID5, Large HDD systems takes a very long time to rebuild in the case of a Disk Failure for example, a 12 TB may take up to a week to rebuild! During rebuilding the NAS is somewhat usable but not a guarantee and if anything happens to another disk during rebuilding ( a real possibility) then all bets are off. The best is to have two NAS and get them to synchronize/mirror each other. NAS are getting cheaper by the day. in a hobby of $2000 power cord.. A $1000 NAS with 12 TB of RAID 5 storage capacity is a bargain. The second NAS doesn't need the fancy drives, just regular Hard Disk Drives these days a 4 TB is about $150 and sometimes less... There exist programs to do that . One of the cheapest (its free) and easiest software to use is synctoy from the good people of MicroSoft
Which RAID configuration did you select and why? Going to be setting up my DS1815+ this week using 5 WD 4TB RAID drives.
I would also add a UPS to the plug this into since if you have a power outage and the data is not done being written it can corrupt your entire storage.
And in Mike Lavigne's situation, where he has a mirroring setup of two identical NAS, Synology Hybrid RAID is not an option.
Answer is in the help file, under the High Availability topic if I remember... Stated SHR not an option in that scenario.Why not? That is exactly what I have and a little more: I have my music in 3 NAS: Two (2) in Haiti ( House and Office) and One in Miami (Office).
Answer is in the help file, under the High Availability topic if I remember... Stated SHR not an option in that scenario.
HA = When one box fails the other box is active and that is not the same as having a backup. HA is really only relevant when you need to have no downtime and for an audio guy he can live for 5 min while the other system boots up.
Tell me how having a totally duplicate mirrored NAS is not like having a backup? Granted, I suppose, some catastrophe could take out both systems, but we're starting to get into some pretty unlikely scenarios. Having a backup of tens of terabytes also requires additional investment in hardware, so for me a fully mirrored system like Mike is running seems like a pretty optimal solution. If the array gets corrupted, or there is a disk failure (absent a hot boot spare), there is still a fair amount of time for the NAS to rebuild the array. Having a High Availability solution would take the wait out of that scenario. But... every option carries some risks.
My original point was that SHR has some instances where it may not be the best or even possible option, like a HA mirrored NAS.
Since HDD are guaranteed to fail at some point then the possibility of having more than one fail in a Raid5 is highly probably and have seen the tears flow when it happens. Raid if not used for the performance benefits it offers is just a simplified way to manage a large pool of storage... so it really isn't a requirement. But in yours and Mikes scenario having a backup on a separate box with a separate raid is certainly a very good approach.
According to Raid-failure.com the probability of a successful rebuild after 1 drive in a 5 drive array fails is 99.8%. "Highly probable" is way overstated.
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