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Forum Discussion
ReadyNas Pro 6 - Unit Failure
I've been given a ReadyNas Pro 6 with 6x1Tb NAS drives in it. I have been considering using it as a home server, primarily to provide backup for the family across the network (Macs and PCs).
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jolo2 wrote:
first, I’m uncomfortable with raid 5, so perhaps you can reassure me. If 1 drive dies then there’s a long resync process with a new drive during which time there’s no redundancy, so if a drive dies in that period, total data loss. That’s a scenario I want to make impossible. With raid 1 I should be able to pull, out a working drive that’s paired with a failed drive and copy the data off quickly.
Either way, the main vulnerability is that if two drives fail you have total data loss. All things being equal, the resync period will be longer with RAID-5. But the resync won't be that long with 6x1TB drives.
And there are other causes of loss - an electrical surge (nearby lightning strke) can take out all the drives (and the chassis) simultaneously for example.
However, it is true that RAID-5 is less robust and that data recovery is harder. But I back up all the data on the NAS - so loss of a volume is just an inconvenience. I use XRAID since it is convenient to be able to expand the volume, and most of the time a disk failure is easily dealt with.
jolo2 wrote:
A related question: if I did run an x-raid / raid 5 then over time I would increase the capacity, so would I be able to get a backup usb drive that is as large as the entire array?
It depends on how much you increase the capaciity. But you can get 10 TB USB backup drives (around $200). And you don't actually need each drive to back up the full array. Personally I do share by share backup.
jolo2 wrote:
If they are raid 1 volumes then I have duplicate backups.
RAID isn't really a backup, and the mirrored disk won't always help you. For instance, if you accidentally delete some data, it immediately disappears from both disks. Or, the file system can be corrupted due to unexpected power loss or hardware issues in the chassis. There's also disaster recovery (lightning, flood, fire, theft, ...). You should consider that risk when as you sort out a backup plan. Personally I use Crashplan cloud backup for disaster recovery.
jolo2 wrote:
However from searches it seems the memory required is both legacy and very specific. Do you know precisely what sticks are required to upgrade the memory? That would help. Also, where could i source a replacement psu, which is also no doubt legacy at this point?
I don't think the Pro is a fussy about memory as the NV+ v1.
I upgraded mine with Patriot 2x4 GB RAM some years ago ( https://www.amazon.com/gp/product/B004ZG20C6/ ) but that is ridiculously priced now. But any DDR2 800 PC2 6400 RAM should work.
As far as the CPU goes, I haven't upgraded mine. If you are simply using the NAS for backup, I wouldn't bother. It would be more beneficial if you were running apps (for instance plex).
Sandshark is a good source of info on hardware upgrades.
This continues to be very useful feedback and I am slowly getting to grips with how to make the most of this. I'll certainly do share by share backup and will stick with Raid 5/X-raid. Disaster recovery is a good point, though I may take that risk at this point, given that critical files will also be on OneDrive, which provides some (if not complete) reassurance. I'd prefer not to have a further paid-for service at this stage.
As for upgrading the machine, I will upgrade memory. Does this look OK? Are there any furhter specs I should check before buying?
| KB_4GB_2X2GB_PC2_6400_800_DIMM | |
| RAM Size | 4 GB |
| Computer Memory Type | DDR2 SDRAM |
| Voltage |
1.8 volts
|
The processor is an E5300 @1.6Ghz. I will be running plex. Will that CPU cause any issues?
I have what might be an issue with the CPU fan. It runs at 1750rpm (according to the web interface) no matter what I do. If set the performance to quiet/balanced/cool, the system fan spins up and down, but CPU is always at 1750 and is obviously drawing in plenty of air. Temps look a bit odd, too. CPU reports as 35C (95F) and Sytem at 47C (117F). Shouldn't the CPU be hotter than the system? Note there is no load on the system at present. It's just idling. I'm wondering if this is all normal, or whether the CPU fan should show a variable speed. I'd be pleased if it would go slower at idle to keep the box a bit quieter.
jolo2 wrote:
but CPU is always at 1750 and is obviously drawing in plenty of air.
My Pro-6 currently says 2163 (running 4.2.31 firmware), so I think it does run fast.
jolo2 wrote:
Temps look a bit odd, too. CPU reports as 35C (95F) and Sytem at 47C (117F).
My CPU reads 23C and the system reads 55C. I agree it's a bit odd for the CPU to be lower, but it always is.
FWIW, my CPU fan is the original one (though I have a new one on the shelf if I need it). I replaced the system fan with a Noctura one a while ago (it sounded like a fan bearing was starting to wear).
jolo2 wrote:
Does this look OK? Are there any furhter specs I should check before buying?
240 pin of course. I think yours will be fine, though I defer to Sandshark
jolo2 wrote:
The processor is an E5300 @1.6Ghz. I will be running plex. Will that CPU cause any issues?
I don't run plex on the pro, but I expect you won't be able to do much real-time video transcoding with the Pro. Though you might not need that (depending on whether you plan to use Plex to watch videos away from home).
Straight streaming with plex will work fine.
The spec on the RAM came out looking a little strange, but looks right.
I agree with StephenB , the Pentium E5300 is not likely to be up to the task of running Plex with any real-time video transcoding. The Core2Duo E7600 would be, though probably not for 4K content.
The CPU fan on some models was a three-pin one plugged into the daughterboard instead of the standard 4-pin one into the main board, and I don't think OS6 accounts for those units. But I think the fan speed shows up as zero in that case. CPU temperature can be wildly wrong, as it relies on a transducer inside the CPU that's notoriously not well calibrated. That fan speed does seem high for a CPU that temperature. But I guess if it really is going that fast, it would keep the CPU nice and cool. And the system could run hotter, especially if you have 7200RPM drives. I don't have any active Pro6's to check my temps. Plus, mine could be a bit higher here in sunny Florida.
Overnight the ReadyNas has developed a problem. I changed the system fan 48 hours ago for a Noctua, since I'm trying to keep things quiet. It uses the same 3-pin fan socket on the daughter board that the Crown was previously plugged into. When I installed the fan everything worked just as before and the system ran happily for 24 hours.
At 4:00am this morning the system reported that the fan was at 0rpm. Half an hour later it shut down as temps began to rise.
Checking this morning, the fan spins up as you would expect when I turn the system on. It runs for a while (5-10mins) then stops. The warning is then issued and so I shut the system down myself.
The system was set to "balanced", but changing to "quiet" or "cool" doesn't change things.
Any ideas?!
What fan did you install? I went with an NF-S12AFLX. Maybe try putting the stock fan back for now, and see if the behavior changes back.
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