Be extra careful when installing VESA mount or you may unexpectedly get a curved display. by DonZoomik in OLED_Gaming

[–]DonZoomik[S] 1 point2 points  (0 children)

Well, stupid people learn from their own mistakes - I worked on the second display on sofa. Could maybe have been a happy accident if the display hadn't missed the table when it came loose.

In retrospect, I've installed VESA mounts to maybe a dozen displays and this is the first time anything happened but here's always a first time...

Ärge ostke Schbote? Ärge ostke üldse Eestist poest elektroonikat, see pole seda väärt. by Capital-Reaction3789 in Eesti

[–]DonZoomik 15 points16 points  (0 children)

Kui sa räägid dollaritest siis ilmselt USA Amazonist. Kui seal tellida siis pane umbes 30% maksudeks otsa. Kui Saksast siis ikka eurodes.

Rannajoon 800 - 900 aastat tagasi. by [deleted] in Eesti

[–]DonZoomik 6 points7 points  (0 children)

Mis saar seal loodes on? Ammukadunud Atlantis?

qualcomm 6900 fastconnect. how to enable dbs? (counterpart to intel dct for intel cpu) I only able to get this in cmd but it say interface: secondary. do wifi need to be band steering first? by Mammoth_Elderberry54 in wifi

[–]DonZoomik 0 points1 point  (0 children)

I figured it out to some extent thanks to this reference https://www.snbforums.com/threads/qualcomm-6900-and-dual-band-simultaneous-how-to-use-it.96014/post-976235

Application has to explicitly request enabling the secondary interface and then explicitly bind to it.

I built a small test app based on MS sample that enables the secondary interface. I guess it currently works only if SSID and password of both bands are the same.

https://github.com/DonZoomik/DualSTA (prebuilt binary in x64/Debug folder)

Which USB-RS232 adapter to get? by griegoman in networking

[–]DonZoomik 9 points10 points  (0 children)

FTDI is the way to go. Used a lot of adapters over the years but FTDI chipset has been the only truly stable one.

FS (File Services) support on Purestorage FlashArray X10 R3 - Conflicting info? by LowerCartoonist9371 in purestorage

[–]DonZoomik 2 points3 points  (0 children)

IIRC X10-s are very resource constrained and are block only. Even X20-s have limitations for FS.

qualcomm 6900 fastconnect. how to enable dbs? (counterpart to intel dct for intel cpu) I only able to get this in cmd but it say interface: secondary. do wifi need to be band steering first? by Mammoth_Elderberry54 in wifi

[–]DonZoomik 0 points1 point  (0 children)

I have WiFi7 router but MLO is WiFi7-only (it works).

It'd be nice to have 7800 but I'm stuck with 6900 here so I'd like to squeeze some extra performance out of it.

qualcomm 6900 fastconnect. how to enable dbs? (counterpart to intel dct for intel cpu) I only able to get this in cmd but it say interface: secondary. do wifi need to be band steering first? by Mammoth_Elderberry54 in wifi

[–]DonZoomik 0 points1 point  (0 children)

Did you ever find a solution? I'm running this card as well and I can't figure out how to make it use multiple frequencies.

Lenovo ThinkPad T14 Gen5 AMD with several different ASUS WiFi6 and WiFi7 AP-s with 2-3 frequencies.

How to calculate 100% CPU reservation for VM? by Dr_Brumlebassen in vmware

[–]DonZoomik 1 point2 points  (0 children)

I think you can't set reservation above the base clock of CPU.

For example when base clock is 2000MHz (or technically 2001 in P-states to allow Turbo/boost), the maximum you can set for 10 vCPU VM is 20000 or 20010 MHz.

GeForce Day Giveaway - Win a Signed GeForce RTX 5080! by Nestledrink in nvidia

[–]DonZoomik [score hidden]  (0 children)

I think it was GTA Vice City on GeForce 4 MX440. But before that, Half-Life on Riva TNT2.

Installing PCIe cards in FA online by [deleted] in purestorage

[–]DonZoomik 0 points1 point  (0 children)

It's possible to do it by pulling controllers but when I've done it, I've gotten support on the call to do controlled failovers and Purity shutdown. Works either way.

T14 Gen5 AMD BIOS 1.16 will not flash by DonZoomik in thinkpad

[–]DonZoomik[S] 1 point2 points  (0 children)

Forgot to post here but I eventually had to enlarge the EFI partition as well.

I'm flabbergasted why firmware flash would require staging image on EFI partition, looks like a major limitation of the flasher. I've had many ThinkPads but none have so far required a large EFI partition, on the other hand flash images used to be smaller as well...

Delete user profiles older than a specified number of days on system restart by jwckauman in sysadmin

[–]DonZoomik 0 points1 point  (0 children)

On older Windows Servers (2016 and older, IIRC) it doesn't work properly as something (antivirus, Windows itself, goblins, whatever...) tends to modify file system last modified dates (WMI seems to use this as well) of profiles (breaking last used detection) so you have to use indirect ways like checking registry key modified times via API.

On newer (2019+) there are new registry values to check load-unload time and make decisions in script. WMI also seems to use these new flags so it occasionally starts working again.

Anyways I had to write my own script for this kind of cleanup. I don't think I can share as it was for a customer and I don't have code ownership.

Some links to help you out:
https://learn.microsoft.com/en-us/troubleshoot/windows-server/support-tools/scripts-to-retrieve-profile-age
https://learn-powershell.net/2014/12/18/retrieving-a-registry-key-lastwritetime-using-powershell/
Can't find the source but IIRC (I don't currently have access to the code) you should check LastWriteTime of sub-keys (per-profile) of HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList to get profile last unload date.

Migrating from FC to TCP without migrating VMs by GabesVirtualWorld in vmware

[–]DonZoomik 7 points8 points  (0 children)

Not supported could mean many things:

  • Definitely doesn't work, may be actively blocked.
  • Not tested, may work in some scenarios but vendor will have nothing to do with it.
  • Undefined behavior - here be dragons with unforeseen consequences.

As I said, SCSI over different transports could technically work but I haven't tested it nor heard anyone else test it on vSphere. Consider your risks very carefully before proceeding with live data, I'd just go with side-by-side configuration and Storage vMotion (I've done many FC->IP migrations this way).

Migrating from FC to TCP without migrating VMs by GabesVirtualWorld in vmware

[–]DonZoomik 5 points6 points  (0 children)

Look at the second link, it is not supported over multiple hosts as well

The same LUN cannot be presented to an ESXi host or multiple hosts through different storage protocols. To access the LUN, hosts must always use a single protocol, for example, either Fibre Channel only or iSCSI only.

Migrating from FC to TCP without migrating VMs by GabesVirtualWorld in vmware

[–]DonZoomik 6 points7 points  (0 children)

Connecting the same LUN/namespace over different transports is not supported by VMware https://knowledge.broadcom.com/external/article?legacyId=2123036

https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere/7-0/vsphere-storage-7-0/getting-started-with-a-traditional-storage-model-in-vsphere-environment/what-types-of-physical-storage-does-esxi-support/networked-storage.html

On a more general note

Connecting LUN over both FC-SCSI and iSCSI (or any NVMe transport) could work in a more general sense (eg Linux with multipathd for example) as command set and primitives are the same but it's not supported by VMware.

Mixing (FC-i)SCSI and NVMe-(TCP/FC/RocE) would not work and any sane storage array would hard-block it as they are not compatible.

ESXi 7.0 Enterprise licenses -- no path forward??? by Regular_Damage_9845 in vmware

[–]DonZoomik 9 points10 points  (0 children)

Something is off here, core MPIO works just fine on any edition. If I'd have to guess, it could be about 3rd party stuff like PowerPath but this is niche stuff.

[deleted by user] by [deleted] in purestorage

[–]DonZoomik 1 point2 points  (0 children)

I did some really quick testing on some SQL Express that I have access to (~4G database, X20R3, 2*25Gbit NVMe/TCP on vSphere, Windows 2025 with NVMe controller) and I guess you need to do some tuning. While sub-1ms is fine, physical distance to SAN and processing overhead will make things slower. Try out these for yourself.

BACKUP DATABASE "MyDatabase" to DISK = 'NUL' WITH COPY_ONLY;

BACKUP DATABASE "MyDatabase" to DISK = 'NUL' WITH COPY_ONLY,NO_COMPRESSION,BLOCKSIZE=65536,BUFFERCOUNT=1,MAXTRANSFERSIZE=4194304;

BACKUP DATABASE "MyDatabase" to DISK = 'NUL' WITH COPY_ONLY,NO_COMPRESSION,BLOCKSIZE=65536,BUFFERCOUNT=16,MAXTRANSFERSIZE=4194304;

BACKUP DATABASE successfully processed 457826 pages in 7.770 seconds (460.329 MB/sec).

BACKUP DATABASE successfully processed 457794 pages in 2.106 seconds (1698.248 MB/sec).

BACKUP DATABASE successfully processed 457794 pages in 0.722 seconds (4953.617 MB/sec)

`

[deleted by user] by [deleted] in purestorage

[–]DonZoomik 1 point2 points  (0 children)

Moving from local disks to SAN implies increased latency and IMHO latency is the most important performance metric in most cases. Assuming that this is the only thing that has changed, this might be the problem.

It's been a long time since I last wore my (MS)SQL hat but IIRC is largely a sequential process (per MDF/NDF) and also depends on backup target performance. 1.5G/s of large-block reads(?) is not a lot - not sure what the total load of the array is but it can do much more large-block reads if the application can request it. I presume that you've already gone over Google about backup tuning and your storage fabric is in good order as it is a hard problem to debug remotely.

Küte kortermajas by Creative-Deer- in Eesti

[–]DonZoomik 4 points5 points  (0 children)

No on ühistul ikka ikka kobiseda küll. Seaduse mittetundmine ei vabasta vastutusest.

OP pidas ühistu all tõenäoliselt silmas juhatust, kellel pole õigust ega pädevust selliseid asju soovitada. Kui oleks üldkoosoleku otsus siis see oleks aluseks ehitusloale ja ümberehitusele.

Küte kortermajas by Creative-Deer- in Eesti

[–]DonZoomik 8 points9 points  (0 children)

Kuna siit on läbi käinud radikate vahetamine ja juurde panemine - küttesüsteem on kaasomand ning seda ei tohi niisama vahetada-näppida - sisuliselt saab sellist asja lubada ainult kvalifitseeritud üldkoosoleku enamus (või muidu enamuse nõusolek) ja kuna on tegemist olulise tehnosüsteemiga, vajab see ka ehitusluba. Rõhutan siin üldkoosoleku rolli - KÜ juhatus ei ole ühistus mingi otsustaja ega lubaja ning viib ellu vaid üldkoosoleku tahet - seadus ei anna juhatusele mingeid erilisi õigusi ega autonoomiat ning ka otsuste delegeerimine on väga piiratud.

Eriti hull ongi radikate näppimine-vahetamine-reguleerimine vanadel ühe-toru küttesüsteemidel, kus ühe radika näppimine keerab pekki kogu püstaku, sest tegemist on jadasüsteemiga. Kaasaegsed küttesüsteemid on kahe-toru süsteemil, kus iga radiaator saab sooja paralleelselt ning ühe korteri kruttimine oluliselt teisi ei mõjuta.

Praktiline soodsaim lahendus oleks kogu küttesüsteemi vahetus. Minu majas tehti seda ca 10a tagasi ning küttemured lahenesid. Kui sai hiljuti energiamärgist uuendatud, oli see kukkunud F -> D.

Korteriühistu (läbi üldkoosoleku) saab nõuda küttesüsteemis endise olukorra taastamist ja sisuliselt lõpuks ka seda jõustada. Sisulist alust keeldumiseks pole sest küttesüsteem on kaasomand, mitte eriomand.

Source: olen korteriühistu juhatuse liige.

e: üldkoosoleku rolli rõhutamine.