DrSartorius Posted November 25, 2020 Share Posted November 25, 2020 I ran across a post that said that SSD cache is not available for basic unraid, but only on the more expensive options. I tried to find a reference to this in the description of what each level affords one but could not. Is this true? Quote Link to comment
ich777 Posted November 25, 2020 Share Posted November 25, 2020 6 minutes ago, DrSartorius said: I ran across a post that said that SSD cache is not available for basic unraid, but only on the more expensive options. I tried to find a reference to this in the description of what each level affords one but could not. Is this true? Look here: Click (at Registration Key Info) In all editions you have all features/functions enabled the only thing that's limited is the number of drives you can attach depending on the license. 1 Quote Link to comment
JonathanM Posted November 25, 2020 Share Posted November 25, 2020 12 minutes ago, DrSartorius said: I ran across a post Link? Quote Link to comment
DrSartorius Posted November 25, 2020 Author Share Posted November 25, 2020 If I had that link I would have put it here when I made the post. It's just one of many different things I have read while trying to decide how to configure my drives. Which are 4, 2 5tb and 2 4.5tb. I have several 128gb SSD drives. I am guessing I should make the 1 of the smaller drives and 1 of the larger for data, then 5tb for parity and slot 4 for cache. The device is a Lenovo EMC PX4-400D NAS appliance. Thank you. Quote Link to comment
DougCube Posted November 27, 2020 Share Posted November 27, 2020 (edited) There is no limit on number of cache pools. Personally, I would go for the Pro license for future expandability, but I kept adding drives every few days until I hit 18 devices before my first trial key even expired. Currently, there can only be one 'Array' pool. Which conventional wisdom suggests should be all your HDDs together. In your case, the four large drives would be the 'Array' and you can use two of the SSDs to make a single btrfs RAID1 cache pool -- making it so you have redundancy as soon as the data writes to your cache. You can use remaining drives to make more cache pools, or be dedicated for VMs. And if you have even more SSDs to spare you could put them on the data array (a bit of a waste putting SSDs on the array IMO). Four HDDs is really just a start since you'll probably want to have one parity drive, which takes up nearly 25% of it. This sort of RAID5-ish setup is better suited for having more drives. Edited November 27, 2020 by DougCube minor typo Quote Link to comment
spazmc Posted November 27, 2020 Share Posted November 27, 2020 On 11/25/2020 at 5:42 PM, DrSartorius said: I ran across a post that said that SSD cache is not available for basic unraid, That may have bin true in version 5? Version 6 has disk limits. Basic is 6 disks allocate how you wish. options are yours. maybe 2 parity and 4 data disks as basic file server? or 1 parity 1 cache for Docker 3 data disk and 1 unassigned disk for VM. You chose it's your server. Quote Link to comment
DrSartorius Posted November 27, 2020 Author Share Posted November 27, 2020 It is going in a NAS appliance with 4 slots. So that's my limit. Quote Link to comment
spazmc Posted November 27, 2020 Share Posted November 27, 2020 If your not using Docker.(Great.loveit) Then no cache. If your intent on a Media server I would use a small SSD as cache for Jellyfin, MiniDLNA or Plex Quote Link to comment
Helmonder Posted November 28, 2020 Share Posted November 28, 2020 I would also do a cache, but for what is was originally meant for: for cache.. Quote Link to comment
DMenace83 Posted November 30, 2020 Share Posted November 30, 2020 So to clarify, does that mean on a Basic license, the cache drive is considered one of the 6 drives? If I have this set up: 1x Parity 5x HDD 1x SSD Cache I would need at least a Plus license? Quote Link to comment
trurl Posted November 30, 2020 Share Posted November 30, 2020 Any disk attached when you start the array counts, including all parity disks, all data disks in the parity array, all disks in any (cache) pool, and any unassigned disks. 10 minutes ago, DMenace83 said: 1x Parity 5x HDD 1x SSD Cache I would need at least a Plus license? That is 7 disks, so Plus. You will really want Plus anyway if you are going to have 5 data disks just so you have some room to work with other disks as needed. Quote Link to comment
CrimsonChin Posted July 21, 2023 Share Posted July 21, 2023 The Summer Sale, https://unraid.net/summer-sale, lists SSD Caching as a feature unlocked by Plus & Pro licenses. Did this change at some point? Quote Link to comment
itimpi Posted July 21, 2023 Share Posted July 21, 2023 21 minutes ago, CrimsonChin said: The Summer Sale, https://unraid.net/summer-sale, lists SSD Caching as a feature unlocked by Plus & Pro licenses. Did this change at some point? The only difference between the levels is the number of drives supported so that sounds like a badly phrased marketing messsge. 1 Quote Link to comment
Lolight Posted July 24, 2023 Share Posted July 24, 2023 On 7/21/2023 at 2:03 PM, CrimsonChin said: The Summer Sale, https://unraid.net/summer-sale, lists SSD Caching as a feature unlocked by Plus & Pro licenses. Did this change at some point? Yeah, sounds like a case of mistaken marketing message. How did that happen @SpencerJ? Or has it been a quiet change made to the basic license' feature set? Quote Link to comment
SpencerJ Posted July 24, 2023 Share Posted July 24, 2023 Nothing changed with the license tiers. Paired with the qualifying sentence prior, I don’t think the language is wrong but will adjust for clarity’s sake. 1 1 Quote Link to comment
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