Everything, Everything - June 2019

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Sunday 30th June, 2019 17:47
Nice to see that Microsoft have acknowledged the bug I stumbled upon when the Allow Telemetry setting is set to Security. It took me a while to work out the cause as it's not obviously related to Always On VPN. They're "working on a resolution". https://t.co/gwxRAvq8yR
Weird Dates Displayed In Windows 10 1903
Wednesday 19th June, 2019 15:02
Has anyone else noticed that Windows 10 v1903 displays dates with a weird control character when using the net command? It may affect other places, but I've seen it under the "net user" and "net statistics workstation" output:

Windows 10 v1903 Weird Control Character in Dates
Samsung 860 QVO Trim Support
Tuesday 18th June, 2019 09:05
While investigating SAS HBA cards I discovered that the LSI cards only support TRIM if the drives report the following ATA options:
  • Data Set Management TRIM supported (limit 8 blocks)
  • Deterministic read ZEROs after TRIM
Surprisingly, some popular drives such as the Samsung 850 Pro (and allegedly all Samsung SSDs before the 860) don’t report “Deterministic read ZEROs after TRIM".

I found output from the 860 EVO that shows it supports DRZAT, but with the QVO drives being cheaper alternatives I wondered if they'd been nerfed at all. While I'd found instructions to use hdparm and which bytes to look at in some tools, it turns out that Hard Disk Sentinel reports these things (even in the trial version). I can't tell the limit, which they claim needs to be 8, but I've read elsewhere that 4 still works, and I'd assume the EVO and QVO drives have the same limit).

Samsung 860 QVO Trim Support

The good news is these drives appear to support TRIM well enough that they can be safely hooked up to the LSI 9300-8i (and similar controllers). But that card doesn't explicitly list driver support for Server 2019, so I may go for the 9400-8i instead (the heatsink is much larger too - I've read that the heatsink on the 9300 can get quite hot) as that lists 2019 in the driver on their website. It also supports NVMe, which would help future proof the card.

Now I just need to save up some money to buy the controller and some additional QVO drives and test it out.
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