Reinstalling my DS918+, hints for setup?

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Reinstalling my DS918+, hints for setup?

199
22
NAS
DS923+ (16GB)
Operating system
  1. Windows
I'm going to reinstall my DS918+ and I am looking for good hints on the setup. Currently I've got 3x6TB and 1x1TB SSD (two volumes) but I'm interested in how other people have setup their NAS'es.
On my NAS I store a quite alot of movies (running Plex) and lots of photos/homevideos mainly which I'm quite attached to, so some kind of RAID/SHR-setup is probably a good idea (I'm using SHR volumes right now). I'm also running a webserver/MariaDB/Drive and some other packages.
Any clever configuration ideas that you're proud of and want to share as inspiration? :)
 
2,192
928
NAS
DS220+ : DS1019+ : DS920+ : DS118 : APC Back UPS ES 700 — Mac/iOS user
I don’t have a 4 bay (yet), but here’s what I would do for what I think is the best value I can get:
  • Forget about using the SSD in the NAS.
  • Get an extra 6TB and stick it in the 4th bay. You’ll end up with an 18TB in SHR (or RAID 5)
  • Use the SSD in your PC, it’ll be more useful there :)
 

Rusty

Moderator
NAS Support
6,099
1,790
www.blackvoid.club
NAS
DS718+, DS918+, 2x RS3614RPxs+
Router
  1. RT1900ac
  2. RT2600ac
  3. MR2200ac
Operating system
  1. macOS
Mobile operating system
  1. iOS
I'm going to reinstall my DS918+ and I am looking for good hints on the setup. Currently I've got 3x6TB and 1x1TB SSD (two volumes) but I'm interested in how other people have setup their NAS'es.
On my NAS I store a quite alot of movies (running Plex) and lots of photos/homevideos mainly which I'm quite attached to, so some kind of RAID/SHR-setup is probably a good idea (I'm using SHR volumes right now). I'm also running a webserver/MariaDB/Drive and some other packages.
Any clever configuration ideas that you're proud of and want to share as inspiration? :)
All apps on the ssd volume (services etc) and use the hdd volume for storage (files that don’t change often).
 
139
54
NAS
2x DS1621xs+, DS420+
Router
  1. RT6600ax
Operating system
  1. macOS
Mobile operating system
  1. iOS
You might consider running HDDs in all four bays (presumably SHR or RAID5) to maximize capacity for future growth. Thinking beyond that.. With the DS918+, you could add a single NVMe cache SSD (read only) or two NVMe SSDs (read/write) to optimize performance, if needed. A memory upgrade to 8GB provides a relatively inexpensive performance upgrade, as well, depending on the applications and workload.

I ran into a similar tradeoff situation with a DS1019+ that I manage remotely. We found that NVMe cache on an all HDD RAID 5 array performed well beyond our expectations. So we didn't need to sacrifice capacity (HDD) for performance (SSD) given the limited number of slots.

Ron
 
199
22
NAS
DS923+ (16GB)
Operating system
  1. Windows
I've got two NVMe's already as r/w cache aswell as 8GB RAM.
I am a bit worried about noiselevel running all 4 slots as one volume (as I've got my NAS close to my computer). Writing data to 4 drives at the same time will I guess produce somewhat more noise than for example 2 drives..

I purchased the SSD actually mainly for VMM usage but since it hardly affected performance at all (=still very poor), I am not entirely sure the best purpose for that one. The non-existant noiselevel, of course, is a nice reason to have it in the NAS.

Nice ideas, keep them coming. :)
 
139
54
NAS
2x DS1621xs+, DS420+
Router
  1. RT6600ax
Operating system
  1. macOS
Mobile operating system
  1. iOS
You didn't mention which HDDs you're currently using. In any event, the following link to an article comparing HDD noise levels may be interesting in light of your circumstances and concerns: WD, Seagate, HGST, Toshiba noise level comparison - NAS Compares

FWIW, I recently switched from Iron Wolf Pro to Exos HDDs. And I'm very glad they are located in a spare room where noise is not a concern.
 
139
54
NAS
2x DS1621xs+, DS420+
Router
  1. RT6600ax
Operating system
  1. macOS
Mobile operating system
  1. iOS
Well it looks like the WDs are among the quietest. So you've got that going for you. From my own experience, I have observed that RAID 6 is noisier than RAID 5; which is noisier than RAID 0 - makes sense. Extrapolating a bit... RAID 10 might be the quietest way to achieve redundancy. But of course, that presumes your data will fit on two HDDs.

Hopefully someone else can comment on the noise level comparison as number of HDDs increase with a given RAID level.
 

Telos

Subscriber
2,844
899
NAS
DS418play, DS213j, DS3622+, DSM 7.2.4-11091
the Exos are 16TB (CMR). Good heads up.
Good for you...
In addition to its Exos X16 CMR+TDMR hard drives, Seagate is also prepping host-managed 18 TB SMR (shingled magnetic recording) HDDs, which is powered by the same platform. These drives will be aimed at customers requiring even greater capacity with read-intensive workloads. Interestingly, Dave Mosley says that the platform used for these new HDDs is ready for HAMR heads:

"This particular platform for us will take us 16 TB and 18 TB with SMR and other variants. It will take us beyond 18 TB and probably into the HAMR families as well because HAMR is basically drop into this when we are ready."
from Seagate, May 2019...
 
Hopefully someone else can comment on the noise level comparison as number of HDDs increase with a given RAID level.
The important factor is the incresed number of harddisks, not the raid level.

A raid0 spun over 4 harddisks, will be as noisy as a raid5 with 4 harddisks. When it commes to raid5/6: on data write, the harddisks are not involved in calculating the parity. On data scrubbing, the harddisks are involved in reading the parity data and the data of the other drives to verify the consistancy. In both scenarios the harddisks do nothing else than normal write/read operations.
 

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