HDD change 2TB -> 4TB

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HDD change 2TB -> 4TB

szlapton

Bit Poster
NAS
DS211+
Hello
I have a problem. Tried to get help from Synology, but they replied that it is out of their range.
I have changed old 2TB HDD to brand new 4TB. Made exact copy and put inside DS (211+). Everything works fine, but there is only 2TB available to use on 4TB disk. Old HDD was MBR disk and so is new one. MBR handles only 2TB. Tried to convert to GPT but after conversion DS didn't boot. Convertion is reversible but requires additionaly to change partition id (type) to "FDh" ("Linux RAID") - I was able to check it thanks to 2TB HDD which remained intact (after a back-convertion DS also didn't boot). I don't want to make backups, reinstal DSM and restore backups. I think that I need to set proper partition id (type) after convertion to GPT. I'm looking for someone, who can remove a HDD bigger than 2TB out of DS, put it into a PC, and check those id (type) for partitions (system, swap and data). This is out of range for Synology's Helpdesk.
 

Telos

Mega Poster
Made exact copy and put inside DS (211+)

What does this mean? To change a disk means pulling one out and replacing it. No copy. No MBR.GPT stuff. Just plug and play.

Describe your system before doing this and what you hoped to achieve.
 

Rusty

Staff member
Moderator
NAS Support
www.blackvoid.club
NAS
DS412+, DS718+, DS918+, 2x RS3614RPxs+ with expansions
Router
RT1900ac, RT2600ac, MR2200ac
You are not using the NAS or DSM the right way. As Talos said.
 

jeyare

Mega Poster
NAS
1811+, 3x 1813+, ...
You have 2 bay NAS. To be sure:
- all two disks are independent Volume (not in a RAID or SHR) ... Yes/No?
- how you did the exact copy of the OLD to NEW disk? 3rd party independent utility, out of Synology ... Yes/No
- did you convert basic disk to dynamic disk or basic partition to dynamic volume? ... tell us

Then back to basics
GPT partition has two standards:
a) basic or simple disk
b) dynamic disk - contains simple volumes, spanned volumes, striped volumes, mirrored volumes, and RAID-5 volumes
Then the dynamic volume is contained within a dynamic disk and is a logical volume, much like the logical drive in a basic disk.

When the disk is independent - use this Step by step guide:
1. Switch off your NAS.
2. Put the NEW disk to your NAS. It will start new DSM initialization. Do it. When the NAS is hanging (your disk copy problem), format your disk as plain by another computer. Do it whole procedure in this point again.
3. If finished, you can switch off your NAS again. You don't need configure your complete NAS setup.
4. best way - use independent computer with Linux or Live CD
5. plug your OLD and NEW HDD into the computer by SATA or USB/SATA
6. switch on the computer, or Live CD boot
7. Use GParted
8. In NEW disk you will find 3 partitions small (DSM partition), large one (data partition), SWAP partition
9. NEW disk. You need edit/write a start + end sectors into the DSM and Data partition according the OLD disk (same partition)
10. NEW drive. Then you can erase DSM and the Data partition, prepared by DSM initialization proces from point no. 2 and 3.
11. DATA COPY. You have to copy both partitions from (DSM, Data) from the OLD drive to NEW one. Use Rsync command: rsync -avxHAXW --numeric-ids /source /destination
12. NEW disk data partition enlarge. You can enlarge the data partition, up to you.
13. Done, open a beer and cheers.

PS: as Acronis user from 2009, it is working with Acronis Disk Clonning, 100%. Just plug and play.
 

szlapton

Bit Poster
NAS
DS211+
Thank You for attention.

Maybe I wasn't precise enough. I have DS211+ with 2TB HDD (OLD disk). It occued that it is MBR disk (due to it size as I suppose). I want to change (maybe a better word is "replace") it with 4TB HDD (NEW disk). I want to save may data, databases, configs, etc.

Made exact copy and put inside DS (211+)

What does this mean? To change a disk means pulling one out and replacing it. No copy. No MBR.GPT stuff. Just plug and play.

Describe your system before doing this and what you hoped to achieve.
I have made an exact copy of 2TB HDD on 4TB HDD. MBR was "copied" too, so I'm unnable to enlarge my data partition over 2TB. Right now my DS is running 4TB HDD with all my data, databases and configs, but with only 2TB available to use. My DSM is 6.0-7321. I want to have everything from my 2TB HDD running on 4TB HDD with all available space to use.

You have 2 bay NAS. To be sure:
- all two disks are independent Volume (not in a RAID or SHR) ... Yes/No?
- how you did the exact copy of the OLD to NEW disk? 3rd party independent utility, out of Synology ... Yes/No
- did you convert basic disk to dynamic disk or basic partition to dynamic volume? ... tell us

Then back to basics
GPT partition has two standards:
a) basic or simple disk
b) dynamic disk - contains simple volumes, spanned volumes, striped volumes, mirrored volumes, and RAID-5 volumes
Then the dynamic volume is contained within a dynamic disk and is a logical volume, much like the logical drive in a basic disk.

When the disk is independent - use this Step by step guide:
1. Switch off your NAS.
2. Put the NEW disk to your NAS. It will start new DSM initialization. Do it. When the NAS is hanging (your disk copy problem), format your disk as plain by another computer. Do it whole procedure in this point again.
3. If finished, you can switch off your NAS again. You don't need configure your complete NAS setup.
4. best way - use independent computer with Linux or Live CD
5. plug your OLD and NEW HDD into the computer by SATA or USB/SATA
6. switch on the computer, or Live CD boot
7. Use GParted
8. In NEW disk you will find 3 partitions small (DSM partition), large one (data partition), SWAP partition
9. NEW disk. You need edit/write a start + end sectors into the DSM and Data partition according the OLD disk (same partition)
10. NEW drive. Then you can erase DSM and the Data partition, prepared by DSM initialization proces from point no. 2 and 3.
11. DATA COPY. You have to copy both partitions from (DSM, Data) from the OLD drive to NEW one. Use Rsync command: rsync -avxHAXW --numeric-ids /source /destination
12. NEW disk data partition enlarge. You can enlarge the data partition, up to you.
13. Done, open a beer and cheers.

PS: as Acronis user from 2009, it is working with Acronis Disk Clonning, 100%. Just plug and play.
Yes both disk are independent. They didn't worked together. No RAID but SHR (as DSM claims) on each of them.
I used a Linux program DDRESCUE, suggested by Synology Helpdesk to make a copy of OLD disk.
After a convertion to GPT it was a basic disk. I found in Internet that Synology handles only basic GPT. I didn't try to convert it to dynamic. Should I?
Question to step by step guide - points 1-3: You suggest to remove OLD, put NEW and let DS to handle it (create partitions and install DSM)?
 

jeyare

Mega Poster
NAS
1811+, 3x 1813+, ...
Question to step by step guide - points 1-3: You suggest to remove OLD, put NEW and let DS to handle it (create partitions and install DSM)?
Yes

After a convertion to GPT it was a basic disk. I found in Internet that Synology handles only basic GPT. I didn't try to convert it to dynamic. Should I?
When you will use my Guide, you can forget for this. It will not help you. Your problem is not in GPT, problem is in setup of partitions (described).

Yes both disk are independent. They didn't worked together. No RAID but SHR (as DSM claims) on each of them.
Just few questions:
- did you expect, that you will someday use two disk as single Disk group by SHR in your DS211+? It means the primary disk (where is DSM partition located) + another disk.
- or what is the primary reason use in 2 bay NAS two independent disk with two independent Disk group as SHR? Just interested in. It is your own choice.
... because the SHR is RAID, the you need 2+ disks for that reason in single disk group.
 

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