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Forum Discussion
3TB or 4TB HDD recommendation for Readynas RN516
Hi, I am thinking of upgrading my old NV+ V1 for a while.
Now that the RN516 is getting cheaper I think I will buy the RN516 diskless version in 2 or 3 months.
But at the moment I have one problem. I don't know which harddrive I should choose for the NAS.
Do you have any recommendation for a 3TB or 4TB drive for the RN516 unit?
First I would go with the WD Red Series but then I read about the high load cycles count and reallocated sectors count.
So it's not a good idea to buy these drives. :(
What about the Hitachis? Or Seagate (I also had also reallocated sector issues with 1TB Seagates in my old NV+)?
Any recommendations? It's a tough decision to find the right drive.
best regards
starbuck
Now that the RN516 is getting cheaper I think I will buy the RN516 diskless version in 2 or 3 months.
But at the moment I have one problem. I don't know which harddrive I should choose for the NAS.
Do you have any recommendation for a 3TB or 4TB drive for the RN516 unit?
First I would go with the WD Red Series but then I read about the high load cycles count and reallocated sectors count.
So it's not a good idea to buy these drives. :(
What about the Hitachis? Or Seagate (I also had also reallocated sector issues with 1TB Seagates in my old NV+)?
Any recommendations? It's a tough decision to find the right drive.
best regards
starbuck
5 Replies
Replies have been turned off for this discussion
- Maybe the SeaGate 4TB NAS drive or one of the Hitachi options.
- Yes I think the Seagate 4TB NAS drive ST4000VN000 is a good choice.
According to the datasheet:
Reliability
Load/Unload 600.000 cycles should be a good value
Temperature during operation is 34°C which is also good I think.
But I am a bit confused about the fact the drive should be used in an 1-5 bay NAS System?
Number of Drive Bays Supported
1 to 5
Does that mean they did not guarantee a proper operation of the drive in a 6 bay NAS? What about the Netgear support then?
Just another quick offtopic question: How do I calculate the real available free disk space in the NAS?
(6 bay NAS, 4TB hard disks with single redundancy and the same with dual redundancy with two drives for redundancy )
Does that mean:
1) I have 5x 4TB = 20TB free space available and 1x 4TB for redundancy
2) I have 4x 4TB = 16TB free space available and 2x 4TB for redundancy ?
Is this assumption correct?
Is it possible to start with single redundancy and later convert/switch to dual redundancy without data loss?
Or do I need to backup the data first and then switch to dual redundancy and then copy the data back to the NAS?
If "online conversion" works will I loose free disk space for conversion? Or do I need to do a factory reset and start from scratch? starbuck_ wrote:
Does that mean they did not guarantee a proper operation of the drive in a 6 bay NAS? What about the Netgear support then?
If it's on the compatibility list it should work fine. The disks might be slightly more prone to failure than in a 5-bay NAS but they're still much cheaper than the better alternative: enterprise disks.starbuck_ wrote:
Is this assumption correct?
Yes, but disk manufacturers measure using TBs whereas the NAS uses TiB. So a 1TB disk is 931 (1024/1024^4*1000^4) GiB. Also there are some overheads.starbuck_ wrote:
Is it possible to start with single redundancy and later convert/switch to dual redundancy without data loss?
Not at this time. Even if it does become possible it would likely require having an empty drive bay and checking a checkbox in the Dashboard before putting a disk in the empty slot.starbuck_ wrote:
Or do I need to backup the data first and then switch to dual redundancy and then copy the data back to the NAS?
Yes- Thank you for the information. So I think it's better to start with dual redundancy from start for safety reasons.
And also not to forget backup the data on a regular basis as well. - I'd avoid the Wd red drives ( 3 or 4 tb) until the load cycle count issue is resolved. Although the 3 tb version is reported to have appropriate idle settings, it seems newer versions may have the lcc issue.
I've just received a refund from Wd on the basis that the disks were not fit for purpose as described in the product marketing.
The seagate Nas drives are ok so far but only a month or so of use in a 316.
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