Hi Craig, Just bought and am setting up a new TS-473A. 2x 1TB NVME drives (Samsung SSD980), and 3x 6TB and 1 4TB Ironwolf HDD. 16 GB RAM. Have already established to 1st storage pool, raid 0, and loaded the system as well as many apps. Also built storage pool2, all HDD. My primary purpose is to store my docs and many photographs. Questions: 1. Is there a way to use the NVME drives as cache for the storage pool (2), and 2. As I'm new to the NAS world, is there a detailed guide available to set up the nas both efficiently and securely? Yes, I know I'm asking a lot, but......... I'd really like some guidance. Thank you for all you are doing for al of us......
Looking at a 673A or 873A, so is the ideal setup, M2 for system drive and then SSD for cache? Is there a way of moving the default shares off the SSDs? I'm planning on 3 or 4 Seagate 6TB drives for the data. 673A I'd prob do 4 disks + SSD cache
Great video, very informative. Wish this was listed as a first step video for setup. A couple of questions, would you suggest enabling compression and or deduplication? Also is there any benefit in enabling read acceleration. Thanks!
Hi Craig! Thank You for this missing link. I was somehow wondering how I could force the system running on the SSDs. Just one question: What Minimum size would you recomment for the storage pool? 250GB, 500GB or even more? Thank You! Freddy
Hi, great video and explanation !!! I will build my new QNAP TVS-H474 with 4x 20TB ironwolf (in JBOD mode, looking at 1 failover spare disk) + 1TB WD Red for cache + 64gb RAM + Nvidia GTX1650, in QuTS Hero. By this explanation, could be sense change 1 20TB ironwolf to 4TB SSD in an exclusive pool to application? Separeting in 2 volumes, and losing some space to storage or spare disk to gain a plus to application running, or I am going to any place no sense. Basically the application functions should be media server, plex server and something else around audio/video. Thank you so much !
The most important thing with QuTS hero is to make sure you have at least 2 x SSD's to be used as a system volume, ideally in RAID1. This system volume can be used for apps as well as the OS. You can then use the HDD's for your data, also additional SSD's can be installed as well for things like an SSD cache if you need it.
@@QNAPUK Thank you... When you says 2 SSDs to be used as system volume, are you refering to 2x NVMe on board slots, right? So, I though the these slots were to "cache use" only. But after you said additional SSDs as cache, for which slot do you reffereing fo this? Could you let me know some youtube tutorial videos about this?
@@QNAPUKAlso, if you referring to 2x NVMe slots, is it possible (using 2x 1TB in raid 1) setup it as system volume + cache and work together for these two functions?? Can I do this using QTier also?
I use QuTS hero. If I were to use SSD to setup raid-0 for system storage pool purpose only. How dangerous if this system storage pool drive fails? Will all of my data on other storage pools be gone? If it is not gone, how to fix system storage pool raid-0 drive if it fails? Thanks.
Really depends on if you need the spare space on the System volume for any other purpose. Personally I like to go larger than I need so that I can use the spare capacity for things like VM's in Virtualisation Station.
Hello, thanks for the video! 2 years ago i bought tvs-872xt and did not know about that, so my system lives on 8x12tbs. Few weeks ago my nas went dead (after normal suht down). Qnap is dealing with it but i bought ts-873a as backup nas meanwhile and migrated hdds to it. When my tvs-872xt returns then i am planning to migrate back the hdds to that. So i have few questions how to proceed after that. At some point i will buy hdds for ts-873a and thought to improve both systems by: 1.installing 2xnvmes as raid 1 to ts-873a and make system pool. 2.add hdds as space for other data. 3. When its done, clone all data to that new system. 4. Wipe old nas (872xt) clean and add 2x nvmes as raid1. 5. Clone all data back from other nas Also perhaps better to go from qts to qts hero whilst i'm at it? Atm i have qts installed. I am using nas as video editor and a bit photography. Could this be best course of action to get most out of both systems? Sorry for long post :). Thank You, Peeter
You can check if we support TRIM on your SSD's by going into Storage & Snapshots and looking at the Disk Healthy -> SSD Features section. If it says it is supported you can hit the gear icon at the top right of Storage & Snapshots and in the Global Settings -> Storage menu, you will see a check box for the "Auto Reclaim and SSD Trim Schedule", make sure it is on and set a time you want it to happen.
I have the new QNAP TVS-h674-i5-32G-US 6 Bay on order. 4 WD 20TB Red Pro drives, and 2 SAMSUNG 980 PRO 500GB PCIe 4.0 NVMe M.2 SSDs. Before watching this video my plan was to use the 2 NVMe SDDs for cache. Should and Can I dedicate just 1 (instead of 2) to cache and the remaining second one to the System drive? Or since I have 2 bays free, should I add a 2.5 SSD there for the System pool. (does the system pool work on one drive or does it need two drives?) I plan on setting up RAID 5 from what I'm reading I think. Bit of a newbie, coming from a Windows Stablebit Drivepool setup.
Thanks for the info! Regarding having the SSD for the system drive, Does QuTS Hero benefit from a large SSD system drive. I currently have 2x 256gb drives which will be replaced with 2x 1TB drives, will this increased storage space translate into faster performance (472XT used for shared storage only).
OK, so you recommend to use the NVME drives for system, VMs and storage pools demanding high IOPS, and put the cache on the slower SATA SSDs, right? I've got a TS- h973AX which has 2x U.2 bays. Plan to add a QDA-U2MP in each and install 4x M2 NVME SSDs in RAID 10. Does this make sense speed wise or is the RAID 10 limited by the Asmedia 2812 chip and the speed is the same as a RAID 1 from 2x M2 NVME SSDs in the cheaper QDA-UMP adapter? In case the RAID 10 is indeed faster, would you recommend to configure the SSDs in the QDA-U2MP as individual drives and let the TS- h973AX create the RAID 10 or configure the SSDs in the QDA-U2MP as RAID 1 and stripe these into a RAID 0 on the TS- h973AX?
With the TS-h973ax, I will have two U.2 NVME drives and two SSD drives in addition to the HDDs. I assume that the smartest strategy is to put the system (i.e., the first pool set up) on the SSD drives and then use the U.2 drives for the cache because of the speed advantage?
Hey Craig! great Video! Justa doubt if I install the os on the internal nvmes, how can I swap them, on failure? Is there any issue cold swapping them? I will be using two on raid 1.
@@QNAPUK Wow! thanks for the reply! I thought nobody would respond me... Just one more question. I do not plan using the nvme for cache, as I work with video editing. Does installing the OS on them make any difference in the real world? Or the SSDs speed (2disks on raid 1) enough? I guess all the metadata and logs are also installed in the system pool. But will the nvme be really helpful? For look up and things like that?
Hi, I am running hero 5 on a TS-473A populated with two HDD's. IF I were to add two M.2 NVMe drives and activate QTier would the nas then start to migrate the system files to the M.2 drives thus speeding up the system and avoiding me having to do a factory reset to get the system files on a SSD? Also, as I think I understand, I may be able to manually choose what folders are added to the QTier (SSD) and manually assign them to the SSD's? Thanks,
Hello Craig, I purchased a TS-673A to replace my failed TVS-672N from the "Red Light of Death". I successfully migrated everything, 2x1TB M.2 NVMe RAID1 SSD cache, 64GBs non ECC memory and 2x6TB Ironwolf Pro HDDs RAID1, over to the 673A under QTS. However, I've been thinking about moving over to QuTS Hero for the added data protection and wonder if it makes sense given my use case of storing documents, photos, videos and development source code in an all Mac environment with 10GbE access. I would intend to continue using the current RAID1 2x6TB HDDs in my data pool and I understand under ZFS that pool can only be expanded by added additional RIAD groups to the storage pool. I also I understand the conversion will require a 673A reinitialization and a restore of my data from my backup. I also understand the differences between standard DDR4 and ECC DDR4 memory since my 2019 Mac Pro has ECC memory and how it avoids the possibility of data corruption with the in memory cache. I would like not want to replace my 64GB standard DDR4 memory just yet. Besides the 673A ships with 8GB of standard memory and supports both QTS and QuTS Hero with that same standard memory SODIMM. For my use case does moving to Hero make sense or should I stick with QTS? Performance under QTS has been acceptable but looking at long term. Also, I've read during my QuTS Hero research where folks recommend to not use ZFS without ECC memory. No one has asked that question of you as far as I can tell nor have I heard you make that statement in any of your YT videos I've watch. What are your thoughts with respect to ECC memory QuTS Hero? Thanks, Walt
@@QNAPUK Given my use case of storing documents, photos, videos and development source code, small file types, with mainly random access in an all Mac environment with 10GbE would you recommend a 4k QuTS block size for my shares? Should I consider any cacheing? I intend to put the QuTS OS on my 2x 1TB M2.2 SSDs in a RAID1. Thanks, Walt
Hi there. Upgrading to QNAP from a 9 year old Synology. Its coming tomorrow H674 (i5) im going to be populating it with 2X 2tb NMVE's in RAID 1 and 3 8TB SSD's in raid 5. With room to add another 3 SSD's in RAID 5 in the future, if needed. My question is: Am i right in understanding that QUTS Hero wont benefit from using the NMVE's as cache in the above scenario as even the SATA drives are SSD? What about the extra storage space on the NMVE's (Got a deal on the larger capacities, lol). Could this be used for something. Apologies for the newb question, im new to QNAP and NMVE's in a NAS.
@@QNAPUK Hi. This i don't understand. When you use your m.2 ssd's for bootdrives (raid1) then there will be created a pool/volume automaticaly. So you can not use cashe and make them bootdrives. What do i not understand? What i want to know is this: Is booting of ssd better then ssd-cashe? With ssd-boot-drives the apps start faster but ALL data will be slower in the end.
That's great information --- two days too late. So, how do I do the "hard reset" of the NAS and start over with SSDs? And, I'm on the TS-h973AX which has four SSDs and five HDDs. I am not using the U.2 NVME drives, but all SATA SSDs. I do want to enable acceleration, so should I build a RAID10 from the SSDs and then build the RAID5 and then enable acceleration? Thank you. I only have 500 GB of data on my NAS so far, so could very easily still just start over.
@@QNAPUK Thank you. That worked. I'm not sure how much faster it is but I reinitialized the NAS, rebuilt the system pool as two 256GB SSDs in RAID1 and then built a five 8TB drive RAID5 and then accelerated it with the other two 256GB SSDs. Glad I caught this video before I was "in too deep" with my NAS build.
Great video. I have a 2 Bay Qnap. Unfortunately at the time of purchase I only had One 4TB Drive "spinning rust" HD, therefore the OS, applications, etc are all installed on it. Is there a way for me to Install a SSD HD and CLONE all data and settings from the spinning rust to the Faster SSD HD? I am really trying to not reinstall all apps, preferences, shares, etc. And if that can't be done in the Qnap, can I remove the 4TB drive and clone it using a 3rd party utility like Acronis on a separate computer, and then put the SSD back in the Qnap?
@@QNAPUK Thank you so much for replying. I was hopping if I installed a 4TB SSD on my 2nd empty bay and mirror the 4TB HD to the SSD and then remove the the HD (like a drive failure) would do the trick :-(
Good day, Please advise whether to use M.2 SSD 1-2 or PCIe 2 M.2 SSD 1-2 as system pool for QuTS Hero. My primary purpose is to store my documents, photos, videos (edit), PLEX, Homeassistant. Furthermore, approximately 5 users within the household will access the NAS. The NAS and my PC are connected via the switch ports (10Gb) QSW-M2108-2C, the others via the 2.5Gb ports of this switch. My configuration: TS-673A (32GB ram), M.2 SSD 1-2 Western Digital Black 250 GB, Disk 1-6 - Seagate 6TB, QM2-2P10G1TB (PCIe 2 M.2 SSD 1-2 - SSD 970 EVO Plus 2TB), GPU - Quadro P620.
I don't know why most of the replies are invisible to me? I can see where a commenter receives a reply, but can't see the reply. I've noticed this on several other videos of this channel.
I dont think we have a setting to change how comments are displayed, sometimes you might have to switch it to viewing all comments rather than top comments or most relevant.
Hi, Just realised we had a "Technical" issue with our UA-cam account some time ago and all of the replies to comments were delated and we couldnt get them reinstated.
Hi Craig,
Just bought and am setting up a new TS-473A. 2x 1TB NVME drives (Samsung SSD980), and 3x 6TB and 1 4TB Ironwolf HDD. 16 GB RAM. Have already established to 1st storage pool, raid 0, and loaded the system as well as many apps. Also built storage pool2, all HDD.
My primary purpose is to store my docs and many photographs. Questions: 1. Is there a way to use the NVME drives as cache for the storage pool (2), and 2. As I'm new to the NAS world, is there a detailed guide available to set up the nas both efficiently and securely?
Yes, I know I'm asking a lot, but......... I'd really like some guidance. Thank you for all you are doing for al of us......
Looking at a 673A or 873A, so is the ideal setup, M2 for system drive and then SSD for cache? Is there a way of moving the default shares off the SSDs? I'm planning on 3 or 4 Seagate 6TB drives for the data. 673A I'd prob do 4 disks + SSD cache
Great video, very informative. Wish this was listed as a first step video for setup. A couple of questions, would you suggest enabling compression and or deduplication? Also is there any benefit in enabling read acceleration. Thanks!
Hi Craig! Thank You for this missing link. I was somehow wondering how I could force the system running on the SSDs. Just one question: What Minimum size would you recomment for the storage pool? 250GB, 500GB or even more?
Thank You!
Freddy
Hi, great video and explanation !!!
I will build my new QNAP TVS-H474 with 4x 20TB ironwolf (in JBOD mode, looking at 1 failover spare disk) + 1TB WD Red for cache + 64gb RAM + Nvidia GTX1650, in QuTS Hero.
By this explanation, could be sense change 1 20TB ironwolf to 4TB SSD in an exclusive pool to application?
Separeting in 2 volumes, and losing some space to storage or spare disk to gain a plus to application running, or I am going to any place no sense.
Basically the application functions should be media server, plex server and something else around audio/video. Thank you so much !
The most important thing with QuTS hero is to make sure you have at least 2 x SSD's to be used as a system volume, ideally in RAID1. This system volume can be used for apps as well as the OS. You can then use the HDD's for your data, also additional SSD's can be installed as well for things like an SSD cache if you need it.
@@QNAPUK Thank you... When you says 2 SSDs to be used as system volume, are you refering to 2x NVMe on board slots, right? So, I though the these slots were to "cache use" only.
But after you said additional SSDs as cache, for which slot do you reffereing fo this?
Could you let me know some youtube tutorial videos about this?
@@QNAPUKAlso, if you referring to 2x NVMe slots, is it possible (using 2x 1TB in raid 1) setup it as system volume + cache and work together for these two functions?? Can I do this using QTier also?
I use QuTS hero. If I were to use SSD to setup raid-0 for system storage pool purpose only. How dangerous if this system storage pool drive fails? Will all of my data on other storage pools be gone? If it is not gone, how to fix system storage pool raid-0 drive if it fails? Thanks.
Thanks for the tips.
Should I go for a 2x1TB ssd M2 ? or 2x256GB would be enough ?
Really depends on if you need the spare space on the System volume for any other purpose. Personally I like to go larger than I need so that I can use the spare capacity for things like VM's in Virtualisation Station.
Hello, thanks for the video! 2 years ago i bought tvs-872xt and did not know about that, so my system lives on 8x12tbs. Few weeks ago my nas went dead (after normal suht down). Qnap is dealing with it but i bought ts-873a as backup nas meanwhile and migrated hdds to it. When my tvs-872xt returns then i am planning to migrate back the hdds to that. So i have few questions how to proceed after that.
At some point i will buy hdds for ts-873a and thought to improve both systems by:
1.installing 2xnvmes as raid 1 to ts-873a and make system pool.
2.add hdds as space for other data.
3. When its done, clone all data to that new system.
4. Wipe old nas (872xt) clean and add 2x nvmes as raid1.
5. Clone all data back from other nas
Also perhaps better to go from qts to qts hero whilst i'm at it? Atm i have qts installed.
I am using nas as video editor and a bit photography.
Could this be best course of action to get most out of both systems?
Sorry for long post :).
Thank You,
Peeter
@qnap uk any insights of questions i asked or should i turn elsewhere? :)
How do you enable TRIM on the SSDs?
You can check if we support TRIM on your SSD's by going into Storage & Snapshots and looking at the Disk Healthy -> SSD Features section. If it says it is supported you can hit the gear icon at the top right of Storage & Snapshots and in the Global Settings -> Storage menu, you will see a check box for the "Auto Reclaim and SSD Trim Schedule", make sure it is on and set a time you want it to happen.
I have the new QNAP TVS-h674-i5-32G-US 6 Bay on order. 4 WD 20TB Red Pro drives, and 2 SAMSUNG 980 PRO 500GB PCIe 4.0 NVMe M.2 SSDs. Before watching this video my plan was to use the 2 NVMe SDDs for cache. Should and Can I dedicate just 1 (instead of 2) to cache and the remaining second one to the System drive? Or since I have 2 bays free, should I add a 2.5 SSD there for the System pool. (does the system pool work on one drive or does it need two drives?) I plan on setting up RAID 5 from what I'm reading I think. Bit of a newbie, coming from a Windows Stablebit Drivepool setup.
Thanks for the info! Regarding having the SSD for the system drive, Does QuTS Hero benefit from a large SSD system drive. I currently have 2x 256gb drives which will be replaced with 2x 1TB drives, will this increased storage space translate into faster performance (472XT used for shared storage only).
If I put the system on ssds, can I put the homes & home shared folders on another (hdd) pool?
OK, so you recommend to use the NVME drives for system, VMs and storage pools demanding high IOPS, and put the cache on the slower SATA SSDs, right?
I've got a TS- h973AX which has 2x U.2 bays. Plan to add a QDA-U2MP in each and install 4x M2 NVME SSDs in RAID 10. Does this make sense speed wise or is the RAID 10 limited by the Asmedia 2812 chip and the speed is the same as a RAID 1 from 2x M2 NVME SSDs in the cheaper QDA-UMP adapter?
In case the RAID 10 is indeed faster, would you recommend to configure the SSDs in the QDA-U2MP as individual drives and let the TS- h973AX create the RAID 10 or configure the SSDs in the QDA-U2MP as RAID 1 and stripe these into a RAID 0 on the TS- h973AX?
So do I create 2 storage pools? One for Apps and one for just storage? Also will the apps choose the SSDscas it storage medium automatically?
With the TS-h973ax, I will have two U.2 NVME drives and two SSD drives in addition to the HDDs. I assume that the smartest strategy is to put the system (i.e., the first pool set up) on the SSD drives and then use the U.2 drives for the cache because of the speed advantage?
Hey Craig! great Video! Justa doubt if I install the os on the internal nvmes, how can I swap them, on failure? Is there any issue cold swapping them? I will be using two on raid 1.
@@QNAPUK Wow! thanks for the reply! I thought nobody would respond me... Just one more question. I do not plan using the nvme for cache, as I work with video editing. Does installing the OS on them make any difference in the real world? Or the SSDs speed (2disks on raid 1) enough? I guess all the metadata and logs are also installed in the system pool. But will the nvme be really helpful? For look up and things like that?
Hi,
I am running hero 5 on a TS-473A populated with two HDD's. IF I were to add two M.2 NVMe drives and activate QTier would the nas then start to migrate the system files to the M.2 drives thus speeding up the system and avoiding me having to do a factory reset to get the system files on a SSD? Also, as I think I understand, I may be able to manually choose what folders are added to the QTier (SSD) and manually assign them to the SSD's?
Thanks,
Hello Craig,
I purchased a TS-673A to replace my failed TVS-672N from the "Red Light of Death". I successfully migrated everything, 2x1TB M.2 NVMe RAID1 SSD cache, 64GBs non ECC memory and 2x6TB Ironwolf Pro HDDs RAID1, over to the 673A under QTS. However, I've been thinking about moving over to QuTS Hero for the added data protection and wonder if it makes sense given my use case of storing documents, photos, videos and development source code in an all Mac environment with 10GbE access. I would intend to continue using the current RAID1 2x6TB HDDs in my data pool and I understand under ZFS that pool can only be expanded by added additional RIAD groups to the storage pool. I also I understand the conversion will require a 673A reinitialization and a restore of my data from my backup. I also understand the differences between standard DDR4 and ECC DDR4 memory since my 2019 Mac Pro has ECC memory and how it avoids the possibility of data corruption with the in memory cache. I would like not want to replace my 64GB standard DDR4 memory just yet. Besides the 673A ships with 8GB of standard memory and supports both QTS and QuTS Hero with that same standard memory SODIMM.
For my use case does moving to Hero make sense or should I stick with QTS?
Performance under QTS has been acceptable but looking at long term.
Also, I've read during my QuTS Hero research where folks recommend to not use ZFS without ECC memory. No one has asked that question of you as far as I can tell nor have I heard you make that statement in any of your YT videos I've watch. What are your thoughts with respect to ECC memory QuTS Hero?
Thanks, Walt
@@QNAPUK Given my use case of storing documents, photos, videos and development source code, small file types, with mainly random access in an all Mac environment with 10GbE would you recommend a 4k QuTS block size for my shares?
Should I consider any cacheing?
I intend to put the QuTS OS on my 2x 1TB M2.2 SSDs in a RAID1.
Thanks, Walt
Hi there. Upgrading to QNAP from a 9 year old Synology. Its coming tomorrow H674 (i5) im going to be populating it with 2X 2tb NMVE's in RAID 1 and 3 8TB SSD's in raid 5. With room to add another 3 SSD's in RAID 5 in the future, if needed. My question is: Am i right in understanding that QUTS Hero wont benefit from using the NMVE's as cache in the above scenario as even the SATA drives are SSD? What about the extra storage space on the NMVE's (Got a deal on the larger capacities, lol). Could this be used for something. Apologies for the newb question, im new to QNAP and NMVE's in a NAS.
@@QNAPUK brilliant. thanks, buddy.
Hi. When I follow these steps to set up my QNAP h973ax - can I still use the SSD'S (Sata) for Cache acceleration ? - Hendrik
@@QNAPUK Hi. This i don't understand. When you use your m.2 ssd's for bootdrives (raid1) then there will be created a pool/volume automaticaly. So you can not use cashe and make them bootdrives.
What do i not understand?
What i want to know is this:
Is booting of ssd better then ssd-cashe? With ssd-boot-drives the apps start faster but ALL data will be slower in the end.
That's great information --- two days too late. So, how do I do the "hard reset" of the NAS and start over with SSDs? And, I'm on the TS-h973AX which has four SSDs and five HDDs. I am not using the U.2 NVME drives, but all SATA SSDs. I do want to enable acceleration, so should I build a RAID10 from the SSDs and then build the RAID5 and then enable acceleration? Thank you.
I only have 500 GB of data on my NAS so far, so could very easily still just start over.
@@QNAPUK Thank you. That worked. I'm not sure how much faster it is but I reinitialized the NAS, rebuilt the system pool as two 256GB SSDs in RAID1 and then built a five 8TB drive RAID5 and then accelerated it with the other two 256GB SSDs. Glad I caught this video before I was "in too deep" with my NAS build.
Great video. I have a 2 Bay Qnap. Unfortunately at the time of purchase I only had One 4TB Drive "spinning rust" HD, therefore the OS, applications, etc are all installed on it. Is there a way for me to Install a SSD HD and CLONE all data and settings from the spinning rust to the Faster SSD HD? I am really trying to not reinstall all apps, preferences, shares, etc. And if that can't be done in the Qnap, can I remove the 4TB drive and clone it using a 3rd party utility like Acronis on a separate computer, and then put the SSD back in the Qnap?
@@QNAPUK Thank you so much for replying. I was hopping if I installed a 4TB SSD on my 2nd empty bay and mirror the 4TB HD to the SSD and then remove the the HD (like a drive failure) would do the trick :-(
@@QNAPUK This makes me really worried. How do I recover from a system drive failure, if I can't have a backup of that?
Good day,
Please advise whether to use M.2 SSD 1-2 or PCIe 2 M.2 SSD 1-2 as system pool for QuTS Hero. My primary purpose is to store my documents, photos, videos (edit), PLEX, Homeassistant. Furthermore, approximately 5 users within the household will access the NAS. The NAS and my PC are connected via the switch ports (10Gb) QSW-M2108-2C, the others via the 2.5Gb ports of this switch.
My configuration: TS-673A (32GB ram), M.2 SSD 1-2 Western Digital Black 250 GB, Disk 1-6 - Seagate 6TB, QM2-2P10G1TB (PCIe 2 M.2 SSD 1-2 - SSD 970 EVO Plus 2TB), GPU - Quadro P620.
Did you manage to install QTS on m.2 ssd?
I don't know why most of the replies are invisible to me? I can see where a commenter receives a reply, but can't see the reply. I've noticed this on several other videos of this channel.
I dont think we have a setting to change how comments are displayed, sometimes you might have to switch it to viewing all comments rather than top comments or most relevant.
Hi, Just realised we had a "Technical" issue with our UA-cam account some time ago and all of the replies to comments were delated and we couldnt get them reinstated.
That's unfortunate but it's somehow good to know there's a logical reason, thanks.