Search results for query: SMR

...(C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Family: Western Digital Red (SMR) Device Model: WDC WD20EFAX-68B2RN1 Serial Number: WD-WX22D81DTRF6 LU WWN Device Id: 5 0014ee 2bf31a201 Firmware Version: 83.00A83 User...

...to use some of that space for "special device" partitions for the HDDs mirror. - 2x SATA 3,5" HDDs (lets say 4TB and make sure it's CMR and not SMR!) and use them for your NAS storage as a ZFS mirror - 2x USB HDDs (or even better two SATA HDDs in a caddy for one of those 5,25" hot swappable...

I was thinking about buying the "basic" version of Optiplex (with i5 or i7). With 8GB RAM and 256GB SSD. Then I would like to upgrade it "my way" with "good" RAM and better disks. I need a small form factor (or micro) PC due to space constraints, so a server is probably out of the question. I...

...you want with the system before spending a large sum. Consider IOMMU groups when you want to do PCIe passthrough. Things like useless QLC SSDs or SMR HDDs instead of enterprise drives (with PLP) might also be a concern. Maybe consider a system that is (partially) upgradable in the future or...

Its CMR. Could also be the backplane in case you don't directly connect a SATA cable to the new HDD. In such a case I would switch two disks and see if then another disks is reporting errors in the same slot. Did you also check the power cable and not just the SATA cable? Had disks failing...

...changed controller and cable and still getting the same errors? Maybe it's a firmware issue with the WD model (which is NAS compatible and not SMR)? Can you try any other brand (or if not, another model)? EDIT: I'm not an expert and I would love it if someone more knowledgeable would correct me.

Proxmox itself will work fine when running on that HDD and you can store ISO's but don't use it for VMs. That might just work for VMs, for a while. Best used for (non-Windows) VMs that don't write much. (second-hand) enterprise SSD with power loss protection (PLP) as you will find on this forum.

...i/o. I cant even ssh to the vms after booting up a 4th VM, they just run like molasses. I am using this HDD. Upon more research it looks like SMR drives are a bad choice. Model Family: Seagate BarraCuda 3.5 (SMR) Device Model: ST4000DM004-2CV104 My SSD is a Samsung SSD 970 EVO Plus...

...HDDs are already slow with one operating system and more so when running multiple operating systems at once, and even much more so when they use SMR. Enterprise SSD's in various RAID-formations can handle virtualization work-loads easily but a single QLC SSD is worse than a HDD. You did not...

What disk model do you got? As far as I understand there are 8TB SMR (shingled magnetic recording) HDDs these days and with SMR a HDD might just not be faster when writing.

...datasheets, promising multiple GB/s of write performance, than what some random dudes in the forums are explaining, why the performance of SMR/QLC or even TLC without PLP are so bad. People then still buy these because its a bit cheaper..,ignoring that stuff like sync IOPS performance would...

You need to consider your options with respect to your SQL database load, also the default blocksize on your SSDs. You propable have to carefully tune the settings on all layers to get the best out of it without wasting space of performance. and will hopefully reduce the forum threads about...

Would still be nice to have at least one SMR HDD + CMR HDD + TLC consumer SSD + QLC consumer SSD for comparison, so people can see what to expect when not buying proper SSDs with PLP.

The drive is Seagate Exos X20 20TB Enterprise HDD - CMR 3.5 Inch Hyperscale SATA 6Gb/s, 7200 RPM, 512e and 4Kn FastFormat, Low Latency with Enhanced Caching - ST20000NM007D Is this a slow drive?

If your disk is slow (for example SMR HDD) the CPU might need to wait for disk IO, your "IO delay" will go up and everything might be become very slow (or even not responding anymore).

SMR is terrible, but if you had a cheap CMR drive large enough to handle your typical maximum sized data set as cache, you would not have known they were there. Running multi-terabyte spindles with SSD cache size between 32GB - 64GB I forget I'm dealing with rotating drives, feels like all SSD...

...drives are at least working properly. For some context, I've had this mirror set-up for a few years now and originally I (by mistake) purchased SMR drives instead of CMR drives. I assume you're familiar, but if not, SMR drives take many more operations to write a sector of data since the...

edited : removed Cache advice. smr or consumer ssd roughly works because they have small not protected write cache, which is not secure for data integrity, required in production environnement, in case of crash or power cut.

Thank you very much Leetstekeen for your quick and precise response ! (I'm only using the standard lvm/lvm-thin) If I understood correctly there is no way to play on certain parameters I always thought that SSD technology was more efficient than traditional disks. I'm going to look to buy...

This is an SMR drive and it will get very slow when writing to it without giving it time to reorganize the data while being idle. If you want sustained good write performance then replace it with a CMR drive. If you use ZFS, you might even get errors because such drives get so slow that ZFS...