Can You Change To Shr-2 From Shr Later?
How to Expand RAID Pool on Synology NAS
When using a RAID / SHR on Synology NAS, you practise not have to make full all of your bulldoze trophy at the same fourth dimension. Instead you can buy something like a DS1819+ and start out with just every bit many drives as you lot demand. Then once you start running out of storage space, you can simply expand the RAID pool on your Synology NAS past adding additional drives to your RAID pool. In this tutorial we are going to cover how to aggrandize a RAID Pool on Synology NAS by adding an boosted drive to it, equally well some important things to know earlier you aggrandize your pool!
Overview of Expanding RAID Pool
Expansion Time:
Expansion time varies heavily based off of exact apply cases, but it can be long. When I performed my RAID expansion on my DS1819+, I started with 5 4TB Iron Wolf drives with the overall storage pool roughly one-half total. Later adding a 6th 4TB drive, I recorded the RAID percent complete at various time steps shown below. The full time taken was ane mean solar day, iii hours and 23 minutes.
| Time | % Complete |
|---|---|
| 1h 1m | 3.14% |
| 2h 40m | ix.09% |
| 7h 28m | 27.75% |
| 22h 31m | 74.44% |
| 1d 1h 33m | 87.79% |
| 1d 3h 23m | 100% |
Interestingly, when plotting a best fit line the R^2 value was .997, which ways that the pct complete well-nigh perfectly predicted the total time the expansion would have.
Supported Volume Types:
Non all RAID volume types support drive expansion, well-nigh notably missing is RAID10. The post-obit are the volume types that can be expanded by adding an additional drive:
- JBOD
- RAID 5
- RAID half-dozen
- RAID F1
- SHR1
- SHR2
Expansion Trophy:
Expansion bays such equally the DX517 should Non be used to expand a volume. Instead you should create a separate volume on each device. Volumes which span between an expansion unit and a NAS have a unmarried betoken of failure, which is the cable connecting them. If this cablevision were to break or become unplugged, the unabridged volume would crash and likely become unrecoverable.
Drive Sizes:
Whenever expanding a RAID you lot need to put in a bulldoze which is the aforementioned size or larger than the smallest bulldoze in the pool. This tin can get a headache when using drives from different articles, as two "4TB" drives could exist slightly different sizes. This is by and large a non issue for drives inside a manufacturer'due south line.
If you are using a standard RAID, you should only buy a drive the same size as your smallest bulldoze because, in this example, any storage space over the size of your smallest drive is wasted. However, if you are using SHR, you can actually get boosted storage space past buying larger drives. I comprehend this in depth in my SHR vs RAID Tutorial.
Steps to Expand RAID Pool
Step 1: Verify your Current Volume:
Expanding your volume puts stress on your drives, and yous exercise not want to experience a drive failure in the middle of information technology. Because of this, you will desire to run extended SMART tests on every drive in your puddle. This ideally volition find whatever drives with issues which might cause the pool to fail during the expansion. If you observe any drives with issues, I would recommend replacing those drives before expanding the pool.
Stride 2: Backup your Data!
Though expanding a RAID pool on Synology is generally low run a risk, y'all should still backup your disquisitional files to an external difficult bulldoze earlier doing anything with your pool.
Step 3: Insert the New Drive:
All modern versions of DSM allow for disks to be inserted in any order to create a book. However merely considering you can does non hateful you should. I would recommend having all of your drives in a single book next to each other as it volition make locating disks easier subsequently on.
If your Synology supports hot swapping you can simply insert the bulldoze without powering off. Nonetheless if your NAS does non support hot swapping you will need to shutdown the NAS before inserting a new disk.
Step 4: Expand the Pool from DSM
In one case you have inserted a unitized drive, navigate to Storage Manager from within DSM. Open up Storage Pool from the menu on the left hand side, and you should encounter an Activity drop downward menu. From this menu you volition have the pick to either add together a drive, which volition expand the Puddle, or to change Raid type. Select Add drive and your puddle volition begin.
Step five: Sit and Wait:
You are now washed! DSM will practise everything to expand the RAID pool for you! The screen should look something like this:
Decision:
The ability to aggrandize the storage puddle on your Synology NAS profoundly improves your power to hereafter proof. When I bought my DS1819+, I knew that I would be expanding it down the line so I simply partially filled it with drives. Some other bang-up feature of adding an additional drive is the operation gain that you get, which becomes especially apparent with sequential reads and writes. The following is my performance over a 10GbE SMB connection with Colossal Frames Enabled
| Drive Count | Sequential Write Speed |
|---|---|
| 5 Ironwolf 4TB Drives | 491 MB/s |
| six Ironwolf 4TB Drives | 558 MB/s |
Overall, expanding my RAID pool to include an additional drive was a remarkably painless procedure on my Synology NAS. Check out the rest of my gear!
The to a higher place comprise Amazon affiliate links. No ane has paid me to get their products in this tutorial, withal if you click the links and purchase an particular I become a pocket-size commission from Amazon as a referral.
Source: https://www.spacerex.co/expand-raid-synology/
Posted by: alvarezcueen1999.blogspot.com
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