Vishesh Gupta

The main UnRaid array consisting of 20 SSDs of 1TB each with 2 parity drives. Total 18 TB. A ZFS pool with 3 x 10TB HDDs in RaidZ1 config, giving a total of 20TB. I would like to have incremental backups from main SSD array to the HDD pool. How can I achieve this? The purpose:- 1) To have a mirrored backup on HDD for long term storage 2) The SSD array would always be mounted with read / write permissions, whereas the HDD pool will never be mounted and just be used as a backup. 3) The ability to roll back on a previous version of backup incase of a ransomware attack. Am I overthinking?

1) So essentially I could have an all SSD array, and not having trim is not the end of the world, right? So it is plug and play just as if I were using HDDs? 2) Can you explain the difference between the main array vs pool? Can I have an SSD pool without the main array? 3) Since ZFS has been recently introduced to UnRaid, there aren't many youtube videos, please excuse me for the noob questions. Correct me if I am wrong, is it the same as setting up ZFS in truenas that is ZFS pool > vDEV (raidZ config, giving 1 parity drive within the vDEV) > Adding a dataset > Creating shares? 4) Can I add multiple ZFS pools? 5) If one ZFS pool is doomed for some reason, the other pools wont be affected, right? 6) For my setup, I am planning to have just one vDEV in RaidZ config per ZFS pool, and 4 SSDs per vDEV. This would effectively give me 1 parity drive per pool. 7) Can you point me to a documentation / video that takes me through the steps of setting up a ZFS pool?

I am planning on building an all SSD unRaid server. Is it possible to have an all SSD array? My planned config: 1) 4u, 20 bay hot swap server chassis 2) B550 motherboard with AMD Ryzen 5 3) 32GB DDR 4 ram (Non ECC) 4) Three LSI Sas HBA 9207-8i (6GBps) IT Mode, connecting it to the backplane of the drivebays via mini-sas connector SFF8087. 5) 10GB TP-Link Switch SFP+ for networking along with 10Gig NIC in both the server & client PC. 6) Samsung Evo 980 sata SSDs The plan is to install 4 SSDs in the main array with one parity drive initially, and then add additional SSD's to the array as and when needed. My queries: 1) Does UnRaid support an all SSD array out of the box? In other words, is it just plug and play or do I need to tinker with a few settings? In the past, as per my understanding, auto-trim was absent due to which SSDs were not supported in the main array but only in the cache pools, is it the same case now? 2) Will it be the same process as setting up the array with normal HDD? 3) What will be the performance / transfer / read - write speeds? As I understand that 10Gig network has a max speed of 1280 MBps, whereas the SAS HBA has a throughout of 6GBps, which translates to 768MBps. However, the max write speed to sata SSD is approx 500 MBps give or take. Assuming that there is no traffic on the network, and the files are being written to the UnRaid server, can I expect 500MBps transfer speed? 4) Cache pool would be completely unnecessary, correct? OR, having an NVMe SSD (reads / write upto 7000MBps) for cache can help accelerate things, assuming the files are being transferred from the client pc having an NVMe drive with reads / write upto 7000MBps. My question is, does it translate to 875 MBps real world performance?

For the APP, i meant to have an App that could access all the files and folders on the server. Have automatic sync of the photo albums etc.

Dear Sir I was wondering, 1) Is it possible to have cloud access to our server? 2) Is there an iOS or Android App in development? Best regards

Dear Sir As I understand UnRaid is limited to just 1 Node, with max of 30 drives. I would like to know is it possible to purchase additional licenses for each node, and then create a cluster? (Just like CEPH or Gluster FS) I see a huge potential in the future growth and expansion options for this. Please do let me know if this feature is available or is under development.

Great recommendations, in order for me to make a list of all files & folders, I am using File List Export on Mac (the app I already had), have enables disk shares, and created the list manually. Then disabled the disk shares, since user shares are what I use on regular basis. Thanks all for your recommendations and inputs.

Probably a feature worth considering adding in future. Or a Plugin to make lists of all the contents of the Drive, then a copy of the list saved to each drive.

Sorry for totally noob question, I am not using a parity drive, since I have a backup of all my data on external drives. Incase of a Drive Failure, I would like to know is there a way to find out the names of the files/folders that were on that drive, so that I can restore those files from my external drives? I have setup user shares with Movies, TV Shows, Games, Softwares, Backups etc. A single share is using 4 drives to store that data. How can I find out what drive stored what data?

Did you buy this card for about 40$ on eBay delivered from China? How does it hold up in your system? What is the transfer speed like?

Shall I assume that the first option, that is " set up user permissions in such a way, that the user can Read / Write to the SMB share, but not Delete any file/folder." is NOT POSSIBLE?

Dear Sir 1) I would like to know is there an option to set up user permissions in such a way, that the user can Read / Write to the SMB share, but not Delete any file/folder. This is so as to prevent any catastrophic data loss in case of accidental deletion. 2) If the above cannot be achieved, the second best option would be the recycle bin plugin, do we have to separately install it on the latest version of UnRaid, or does it come pre-installed? Best regards

Thanks a lot. You guys are awesome. I know that the discussion went beyond the scope of UnRaid, but you guys went above and beyond to help me out. Keep up with the great work. Really appreciate it.

https://www.amazon.in/APC-UPS-Model-BR1000G-Battery/dp/B0038ZTZ3W/ref=sr_1_2?ie=UTF8&qid=1533056648&sr=8-2&keywords=apc+smart+ups Could you please have a look at the above link for the UPS. Would this be ok? Server Link: https://www.ebay.com/itm/4U-Supermicro-24-Bay-6Gbs-UNRAID-FREENAS-Storage-server-2x-Xeon-Sandy-Bridge-CPU/132715478149?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649

Thank you all for your input. I was not aware that there can be overwrites caused by brownouts damaging the stored data. Would a regular Inverter UPS that is generally used for home use be ok? I think they are usually offline UPS. Or do I Need to have an online UPS?

I would like to reiterate, I am not using any Parity, further, I would like to know is there any possibility of any already stored data loss if no writes are being done?

Is there any kind of encryption on the drives? Or is it just plug and play?

We have power outages, and I am not using a UPS for my monstrous 1000w Server. The power outages are not frequent, could be once a day, or once a month, I use my server for 4 or 5 hours a day, and is not up 24x7. I am not using a parity drive for my array. In case the server shuts off due to power loss, is there any possibility for data loss at idle / read? I am using WD Gold Enterprise drives

I would like to know, incase the USB boot drive fails, and we have a lot of data stored across our drives, is it possible to still access those files on the Hard Drives using Ubuntu Linux, i.e. Mounting each drive on Linux? Or is it compulsary to create another UnRaid Boot drive, and restore the config files? Just asking incase of an emergency, there should be an alternate method to access our files.

Thanks for your input. I would like to point out that my build is not limited to just 5 drives, It is the data that I have accumulated until now. I am planning to add more rack server in future, as and when required. I am adding about 2tb data a month at the minimum. So probably a 1U Rack server with 4 drive bays (6tb drives), each year. Don't want to have a lot of Towers lying around. I would appreciate if you could give insight to "how long does it take for the server / array to restart everytime I boot, assuming 32TB of used disk space".

I would like to build a Home Storage Server, 5 x 8TB WD Red Drives (1 drive for parity, 4 for storage) 1 x 500GB SSD For cache I will be using my Macbook Pro as Plex Server, with the Unraid Server selected as Storage Location. 1) What is the recommended Rack Server Build Specs I should go for. 2) I won't be keeping the server on 24hours a day, would turn the server on only when I want to use Plex or dump some data onto the server. Which would be typically 2 to 3 hours a day. My main query is, how long does it take for the server / array to restart everytime I boot, assuming 32TB of used disk space. 3) Lastly, I would like to know the transfer speeds. I have read across forums that the transfer speeds are about 40MB/s on a Gigabit ethernet connection, things speed up to about 100MB/s if we use SSD for cache. However, the data that is dumped to the SSD gets transfered to the drives at a fixed time in a day, is it possible that the data gets transferred from SSD Cache Drive to the HDD drives just after a minute ? 4) I will be having a 500GB SSD for Cache. Once I build the server, I would like to dump around 25TB of data onto it. If I transfer more than 5TB at a time, what are the limitations of the cache drive, and is there a work around it?

Further, I would like to know, Do I have to clean a New HDD every time I add to the array, taking into account that I won't be using a Parity Drive. I am planning to add additional 6TB HDD to the array in future as and when required.

I am looking to build a Storage Solution for my data that is scattered all over external HDD. There are about 14 Drives containing 25TB of data. 1) I am looking at the Dell Rack Server R230, is Unraid compatible with the hardware? 2) Can I use Unraid without the Parity Drive? Since the R230 is a 4bay unit, I don't want to waste a Drive for parity, since I don't need it. I have the backup of all the data in my external drives. 3) I would be purchasing additional R230 Units for future expansions, Do I have to buy a separate license of unraid for each additional R230 unit?

I would like to build a Home Storage Server, 5 x 8TB WD Red Drives (1 drive for parity, 4 for storage) 1 x 500GB SSD For cache I will be using my Macbook Pro as Plex Server, with the Unraid Server selected as Storage Location. 1) What is the recommended Rack Server Build Specs I should go for. 2) I won't be keeping the server on 24hours a day, would turn the server on only when I want to use Plex or dump some data onto the server. Which would be typically 2 to 3 hours a day. My main query is, how long does it take for the server / array to restart everytime I boot, assuming 32TB of used disk space. 3) Lastly, I would like to know the transfer speeds. I have read across forums that the transfer speeds are about 40MB/s on a Gigabit ethernet connection, things speed up to about 100MB/s if we use SSD for cache. However, the data that is dumped to the SSD gets transfered to the drives at a fixed time in a day, is it possible that the data gets transferred from SSD Cache Drive to the HDD drives just after a minute ? 4) I will be having a 500GB SSD for Cache. Once I build the server, I would like to dump around 25TB of data onto it. If I transfer more than 5TB at a time, what are the limitations of the cache drive, and is there a work around it?