Thanks for the message, I have just reported this internally for clarification 👍 Would be cool if we could offer the 5 year option for this product too. In any case, I wish you lots of fun with the new NAS!
If you plan to work with SSDs anyway and above all need fast access times for your files, I would go for a DAS rather than a NAS. an 1821+ will not be fast enough even with SSDs in Raid 0 over 10Gbe. Either a DIY solution with significantly more data throughput or rather something ready-made like PROMISE Pegasus with SSDs or similar.
Yes, you can use the four 1 Gb network outputs with one 10 Gb network output, but this requires an expansion card for 10 Gb connectivity. The five Ethernet cables can be connected to a switch, but make sure that the switch supports 10 Gb connectivity if you want to use this speed for one of the connections. The four Gigabit Ethernet ports can be configured for link aggregation or redundancy, which can improve reliability and overall bandwidth.
Hello, I have two DS1817+. I have connected both directly to LAN 2 with a network cable. I transfer the backup of the data with the function "Synchronisation of shared folders". I don't know if there is a better option. But I would be interested.
Hello Micha,
Is the most powerful mode still too loud for you?
I can't hear my fans.
The HDDs are louder.
Pay attention to the type of installation. Well ventilated environment? ....
Greetings francs
It depends on what you want to do. If you want to use the Nvme SSD's as read/write cache you can use any of them. If you want to make a volume with the Nvme SSD, Synology requires their own. You cannot create volumes with non Synology Nvme SSD's.
You can install SO-DIMM DDR4 3200 ECC modules, Timing 22-22-22 up to max. 32 GB.
Note that these are ECC modules, so not the ones used in current laptops! (the bytes are 9 bits, with one error control bit).
You can easily find them on this site.
Yes you can, I put 20tb of segate which was not in the compatibility list
Seagate Exos X20 (20Tb, 3.5", CMR)
And it works very well!
But you can also use ssd https://youtu.be/0u0TT1bF7LA?si=iqF5WtRZMq1fgCJ1
Nice evening
Daniel
Just got the email that a question came in. Yes, they work! Since Synology started selling its own hard drives, the compatibility list is only of limited use. For some devices, there are a few storage media that are explicitly incompatible (other list!). I would urgently keep my hands off these. The common NAS and enterprise hard drives (e.g. the Exos X00 series) are usually compatible. However, Synology support will probably refuse to help with reference to the hard drives.
Modern NAS such as the Synology DS1821+ can accept all kind of sizes, there is no limit, as big as you can get, they will work. In th past, there were NAS systems that had a 2TB limit, but these days are all gone. At the time the Synology NAS supports 16TB drives, but that is only a matter of time, if larger will become available, this number will go up also.
According to the manufacturer, the scalable network cards should be SFP+ or RJ-45.
Official manufacturer's page: https://www.synology.com/en-global/products/DS1821+
You can also find a list of compatible network cards here: https://www.synology.com/en-global/compatibility?search_by=category&category=network_interface_cards&p=1
The only card we can suggest in the above list is this one: Intel X520-DA2 (PCI-E x8)
I am looking for a suitable NAS. I'm wavering between Synology and QNAP. As a designer, I often work with very large Photoshop files (> 300 MB) and video data (4K), so I'm a bit unsure which direction I should take here. My considerations are:
- Operation with SSDs only, as they are quieter in operation, but more expensive than 3.5" HDDs
- Synology is much cheaper than QNAP. Does Synology generally offer fewer features and connections?
- QNAP has Thunderbolt 4 connections and that should be sufficient in terms of data throughput, but the NAS can only be 2 metres away from my Mac (due to the maximum cable length of 2 metres for Thunderbolt 3 and 4)
- Or should I go for 10GbE, as longer cable lengths are possible here and I don't have to place the NAS directly at my desk? But do I have to accept slower speeds?
- 25GbE can be retrofitted on Synology (and QNAP), but the adapters for Mac (Sonnet) are too expensive
- In general, I think Synology has the slightly more user-friendly interface with the DSM
- QNAP, on the other hand, allows more technical settings for RAID (storage pool etc.)
What are your experiences? Thank you very much for your input.
Hello,
You've got something mixed up.
The front 8 slots are for hard drives. You can fit pretty much anything in there. I have 16 TB discs in there. The RAM is 4 GB. Officially, you can install a maximum of 2x16 GB, but 2x32 GB is also possible. The memory slots are on the underside. The SSDs are officially only intended as a cache, but with a trick you can also address the SSDs as a memory pool. The SSD bays are located to the left of hard drive bay 1 on the inside wall.
It's best to get proper advice from Digitec in the shop or register in a forum where you can read everything in detail. Or watch a few YouTube tutorials.
LG
Christoph
I'm thinking about buying a DS1821+ or DS1823xs+. However, I have seen that the "big" DS1823xs+ does not support Hybrid RAID (SHR2), which allows you to mix HDDs and SSDs of different sizes. Is that correct? Perhaps a DS1821+ would then be sufficient and would then have to retrofit 10Gbit Ethernet via card. Otherwise, both models seem pretty much identical to me.
Is it generally possible to simply increase the storage capacity of both by installing additional HDDs and SSDs?
And can I at least use a mix of fast SSDs for everyday work (image editing and video editing) and large HDDs (for the archive) on all models that support hybrid RAID (SHR2)?
I am referring to the DS1821+, which I have been using for just over a year.
I wouldn't mix HDD and SSD in the same storage pool, even if that would be possible in principle. As the device manages the data itself, you have no control over where the files for video editing or similar are stored.
However, an SSD can be assigned to a storage pool as a cache medium. This means that the frequently available data is made available more quickly. As the media can also be assigned to separate storage pools (SP), it would also be an alternative to create a "slow" (SP) with HDD and a fast one with SSD. Volumes are then created on the respective storage pools.
An expansion with additional media (in any empty slots) is possible at any time with SHR. As far as I know, there are also expansion boxes that can be connected via the eSATA interfaces (2 pcs).
I am not currently using an SSD, so the above considerations are theoretical and should be taken with a grain of salt 😉.
Yes this is absolutely no problem, it will trigger a message from the Synology software if you want to use a disc that has not been found to be good for NAS in the Synology database, but you can skip the warning and it will only be shown once.
Also you can use different disk sizes in a Synology system, for this the Synology Hybrid Raid (SHR) concept is used, it is technically equivalent to a RAID5 with the advantage that you can use different disk sizes in the SHR configuration.
There is even a RAID calculator from Synology where you can calculate the usable space with different hard disk sizes.
https://www.synology.com/de-de/support/RAID_calculator
Today my 1821+ arrived - now I have to find out that the 18TB disks are not supported at all.
Why can't this be written down? @digitec
Apparently Synology has installed a so called. Vendor Whitelist installed, with which "foreign" or in their opinion undesirable larger hard drives can not be used.
I'm really thinking about returning everything. With 16TB disks I can migrate the DX513, but then I won't have any more space left. I don't want to do any tinkering with SSH, because that would invalidate the warranty.
I'd rather not talk about the mandatory RAM (currently 380 Stutz for 16GB, with production costs of 20.00).
A real pity. This is the final end of a long Synology era (over 20 years).
Hello,
the DS1821+ has two M.2 SSD slots see item description https://www.synology.com/de-de/products/DS1821+ or technical data https://www.synology.com/de-de/products/DS1821+#specs
SSD's and RAM I would buy according to compatibility list from manufacturer https://www.synology.com/de-de/compatibility?search_by=products&model=DS1821%2B
And otherwise the manual https://global.download.synology.com/download/Document/Hardware/HIG/DiskStation/21-year/DS1821%2B/ger/Syno_HIG_DS1821%2B_ger.pdf will help
Hello, the DS1821+ has 2 memory banks. In principle, these can also be mixed - i.e. 4 GB + 16 GB = 20 GB. The compatible modules are listed on the Kingston page. I have 2 x Kingston SO-DIMM 16 GB DDR4-2666 ECC, RAM
(item no. IEMG2N21, unit price at that time approx. 70 EUR) and installed the freed 4 GB module in a DS1621+, so that both NAS systems are symmetrical (2x 16 GB and 2x 4 GB respectively). So I have no real experience with mixed configuration. By the way, Synology "complains" about the Kingston modules that they are not original from Synology. Nevertheless, they work perfectly for me. I recommend that you make sure that the RAM is with ECC. The ECC support of the DS1821+ was one of the reasons for buying the system. I have not regretted it to this day.
