Search results for query: QLC

...pools should speed things up in general and minimize I/O contention. > The drives are Samsung 870 QVO (which are desktop) Search the forums for QLC / quad-level cell, there are horror stories and multiple recommendations to stay away from them. ESXI and Proxmox are two different things...

It's most likely SMR if it's a HDD but it might be CMR, and it might be TLC or QLC if it's a SSD. Either way, it's cheap and probably not suitable for ZFS or any other CoW filesystem. Please show the output of zpool status before and/or after a scrub. It's not just you but posts like these make...

What kind of fault? What does zpool status actually report (in CODE-tags)? It really depends on read, write or cksum. Are you using QLC or SMR drives then please search the forum about the issues they cause with ZFS. Even brand new SSDs can be terrible for use with ZFS and can also be broken (or...

The theory was double redundancy for hardware failure but the IO performance is such a punish I would be better off moving to 2 separate mirrors. Noted, I started with code then second guessed myself and changed it to quotes. Back to the drawing board to figure out the best way forward....

...experience (has been years ago to be fair) and from what I've seen from other people these BX500s are really bad. According to skinflint/geizhals they use QLC: https://skinflint.co.uk/crucial-bx500-4tb-ct4000bx500ssd1-a3201031.html Assuming the worst if no type is mentioned is usually a safe bet.

...it to a stripe of mirrors (which is like RAID10) and you'll improve the IOPS a lot? However, BX500 drives are a poor choice with ZFS due to the QLC flash and might give you write errors due to time-outs during sustained writes. Search for QLC on the forum and read about all the people who...

...And this PDF proofs my point even further. While the Samsung SM863 is a "server grade SSD", it is almost 10 years old and gets outperformed in many metrics by basically all existing (none QLC) consumer drives on the market ;) But on a serious note, that linked PDF only tests 4k sync writes.

...is at 1% and my WD RED SN700 is at 7% after 3 years of OS + VMs usage. That is why I say you guys are overthinking it (for a homelab). Just get two different brands / controllers, get something with decent performance and avoid QLC and you are good to go. Otherwise you are probably looking...

Ohne GPU läuft das Mainboard nicht und mit einer normalen Ryzen APU kann man kein ECC DDR4 Ram nutzen. Dazu benötigt man dann die Ryzen 5000 PRO Ausführungen. Doch ist da und deshalb auch meine Ausführung, dass man 5x NVMe PCIe 4.0 nutzen kann, wenn da nicht die Abwärme der Datenträger wäre...

...somewhat server), aber ja. Den log schön mirrorn, und sicherstellen, das es am besten SLC disks sind, TLC gehen vmtl auch noch fürn Homebuild. QLC sind lahm und schreibst du nur sehr sehr schnell tot, def. not worth. Aber das super Abhängig von der Workload, homebuilds sind ja eher "human"...

...bei den SSDs ohne PLP nicht da. Dort wird der DRAM nur als Lesecache genutzt. Hast du keinen DRAM Schreibcache, nutzt er deine schönen TLC oder QLC Zellen zu Caching als SLC Zelle. Wenn nur ein Zustand geändert wird, geht das viel schneller zu schreiben. Die Daten müssen nach dem Caching aber...

...SATA SSD with a single 4 TB SATA SSD Options I’ve been considering TLC (reliable, higher endurance): Samsung 870 EVO 4 TB, Crucial MX500 4 TB QLC (cheaper, less endurance): Samsung 870 QVO 4 TB, Crucial BX500 4 TB Questions for the community Do you have any recommendations or...

Well damn, I had sort of thought storage devices might be the case and not so much the network, but wanted to collect some additional intel. Would the Samsung 970 EVO's be appropriate replacements? I'm not looking for the most top end of SSD's (I have a budget to consider) but I also would like...

:eek: Crucial BX500 are the slowest disks you can find, they writes data slower than HDD, except the first GBs, they use QLC flash. Running ZFS over these is the best to test the worst case. EDIT: I don't see network problem as iPerf show 9,3 Gbits/s for your 10Gb network as excepted.

...more chips. It is what makes DC SSD more expensive, just more chips (which translates in smaller chips so you don’t necessarily have to go to QLC but stay in TLC or use TLC as SLC), better firmware, faster controllers (allowing things like inline compression), better quality control, better...

...SSDs: WDS100T3B0A-00AXR0 I replaced 2 of them with 2 x WD Red SSDs: WDS100T1R0A I've googled them and I don't see anything about them having QLC flash memory, but I can't tell for sure, it's too confusing. I guess I could try putting in 2 x Kingston DC600M SSD 2.5 Inch Enterprise SATA...

What drives exactly? ZFS with QLC flash memory drive will slow down to speeds below old rotating HDDs and people refuse to believe it until they experience it themselves and even then it takes some convincing (with is no fun for both parties). If this is the case then search for QLC on this...

...SSD is benchmarked with sync writes, they will thus on paper have lower benchmarks, but they can sustain those 24/7 under full load. They also reserves more space, embed a more expensive CPU, thus allowing better/faster optimizations like compression and deduplication, on “the same” TLC/QLC...

It's a QLC drive and from what I've read not a very good one. Might work okay with the default LVM-Thin though. Beside the Unsafe Shutdowns the values look okay to me. I'd also check for a firmware update and as mentioned monitor drive temperature under load and do a self test. To monitor other...

...SAS and NVMe are transport protocols, and SSD is the general storage type (different technologies also subcategorize this further, e.g. SLC, MLC, QLC etc. ... also features like PLC), so this is technically not 100% correct. NVMe is also SSD, and SSD works with all mentioned transport...