SSD cache for TS-870U-RP

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godavejam
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SSD cache for TS-870U-RP

Post by godavejam »

Hi,

I have just bought a SSD drive to my QNAP. I wanted to use it as SSD cache, I have alredy monuted in a bay(5), but I'm unable to create SSD cache pool (the disk is not even listed, when I click Create button).

Please give my a advice how to make it work.
P3R
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Re: SSD cache for TS-870U-RP

Post by P3R »

Are you sure the SSD work at all?

Is it listed as compatible?

You're aware that a single SSD should only be used as a read cache? Using it as an read/write cache may lead to data loss and kind of defeat the purpose of using RAID.
RAID have never ever been a replacement for backups. Without backups on a different system (preferably placed at another site), you will eventually lose data!

A non-RAID configuration (including RAID 0, which isn't really RAID) with a backup on a separate media protects your data far better than any RAID-volume without backup.

All data storage consists of both the primary storage and the backups. It's your money and your data, spend the storage budget wisely or pay with your data!
godavejam
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Re: SSD cache for TS-870U-RP

Post by godavejam »

It is no listed as compatible, but It is working normaly. I have created storage pool for a test.
What is weird that when I click Create SSD Cache I can see here 2 disks: in slot 3 and 4 (they are part of RAID 10 group) with disk 1 and 2
Last edited by godavejam on Mon Aug 26, 2019 5:01 pm, edited 1 time in total.
P3R
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Re: SSD cache for TS-870U-RP

Post by P3R »

Please contact Qnap support.
RAID have never ever been a replacement for backups. Without backups on a different system (preferably placed at another site), you will eventually lose data!

A non-RAID configuration (including RAID 0, which isn't really RAID) with a backup on a separate media protects your data far better than any RAID-volume without backup.

All data storage consists of both the primary storage and the backups. It's your money and your data, spend the storage budget wisely or pay with your data!
godavejam
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Joined: Mon Aug 26, 2019 4:20 pm

Re: SSD cache for TS-870U-RP

Post by godavejam »

How to contact them without creating account and registering device ?
P3R
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Re: SSD cache for TS-870U-RP

Post by P3R »

Maybe you could try to call them? I doubt that you can receive support and remain totally anonymous though.
RAID have never ever been a replacement for backups. Without backups on a different system (preferably placed at another site), you will eventually lose data!

A non-RAID configuration (including RAID 0, which isn't really RAID) with a backup on a separate media protects your data far better than any RAID-volume without backup.

All data storage consists of both the primary storage and the backups. It's your money and your data, spend the storage budget wisely or pay with your data!
theunk7
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Re: SSD cache for TS-870U-RP

Post by theunk7 »

godavejam wrote: Mon Aug 26, 2019 4:56 pm It is no listed as compatible, but It is working normaly. I have created storage pool for a test.
What is weird that when I click Create SSD Cache I can see here 2 disks: in slot 3 and 4 (they are part of RAID 10 group) with disk 1 and 2
I believe on certain models only certain slots can be used for ssd cache, and sometimes this is noted on 'features' or 'hardware specs' pages for model. See nothing there for your 870U

I just clicked 'create ssd cache' on a TS-EC1280U-RP and it only offered disks # 1-4 (of the 12) and mobo mSATA as candidates. (And only the mSATA's are mentioned on 'hardware specs' page). Other models that support cache already have it in use so I can't check non-disruptively, but I believe on the x79's as well I was offered a specific subset of all disks when going to create cache.

Based on display you described, I'd bet you can only use slots 3-4 for the cache, but if you want to find out without QNAP support, with a couple of spare disks and some standalone time, remove current system and start fresh with the spares and your ssd(s) in slot 3(&/4) and you can confirm.
TS-EC2480U-RP@TS-X80U_20230718-4.5.4.2467 16GB RAM; QM2-2P10G1TA 2 x 2TB R1; QM2-2P-384 2 x 2TB R0c; 24 x 6TB
TS-EC1679U-RP@TS-1679U_20220526-4.3.6.2050 32GB RAM; QM2-2P10G1T 2 x 1TB R1; QM2-2P-344 2 x 2TB R0c; 14 x 8TB
TS-EC1280U-RP@TS-X80U_20231128-5.1.4.2596 32GB RAM; QM2-2P10G1TA 2 x 2TB R1; QM2-2P-344 2 x 2TB R0c; 12 x 10TB
TVS-1271U-RP@TVS-X71U_20231110-5.1.3.2578 32GB RAM; QM2-2P10G1T 2 x .5TB R1; QM2-2P-344 2 x 2TB R1c; 12 x 8TB
TS-873U-RP@TS-X73U_20231128-5.1.4.2596 24GB RAM; 2 x 1TB WD SSD R1; QM2-2P10G1TA 2 x 2TB R0c; 8 x 14TB
TS-873A@TS-X73A_20230421-h5.0.1.2376 64GB RAM; 2 x 2TB WD SSD R1; QM2-2P10G1TA 2 x 1TB R0c; QM2-2P-344 2 x 2TB R1zilslog; 8 x 18TB
TVS-873e@TVS-X73_20230609-5.0.1.2425 64GB RAM; 2 x 2TB WD SSD R1; QM2-2P10G1TA 2 x 2TB R0c; 8 x 14TB
TS-1279U-RP, TS-453U-RP
P3R
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Re: SSD cache for TS-870U-RP

Post by P3R »

theunk7 wrote: Tue Aug 27, 2019 1:07 pm I believe on certain models only certain slots can be used for ssd cache...
Excellent idea! Why didn't I think of that? :ashamed:
Based on display you described, I'd bet you can only use slots 3-4 for the cache...
Yes this Qnap white paper (page 6) confirm that it's slots 3 and 4 in a TS-X70U. Please also note that the amount of RAM installed may limit the size of the SSD cache.
RAID have never ever been a replacement for backups. Without backups on a different system (preferably placed at another site), you will eventually lose data!

A non-RAID configuration (including RAID 0, which isn't really RAID) with a backup on a separate media protects your data far better than any RAID-volume without backup.

All data storage consists of both the primary storage and the backups. It's your money and your data, spend the storage budget wisely or pay with your data!
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