Is putting Server 2019 (full os with hyper-v) and 2 2019 Guests on a single two-disk Raid 1 array reliable enough?

We’re currently experiencing some significant cpu/ram performance issues with 2 VM’s on our current HPE 2015 tower server (2x Xeon 8c/8t 1.7ghz) running server 2012 for HV and guests (10 guests total), so we’re looking at getting a HPE DL325 1x 8c/16t Epyc 3.2ghz with server 2016 or 2019 HV and fresh installs for the two guests in question.

The new server is sata only with just 4x LFF bays so a big raid 10 array with cheaper sas drives (like in our tower server) isn’t really an option, so to maximize performance cheaply we’re looking at 2x enterprise-grade ssd’s, whether HPE branded or maybe samsung/intel.

Our main goal is reliability/redundancy, so would 2x 1TB SSD drives in Raid 1 be reliable/performant enough in this case? I’m thinking partition the disk so the server 2016/2019HV (~128GB) is on one, and the two vm guests on another (~812GB).

This server comes with HPE Smart Array S100i SR Gen10 SW RAID, should we just ignore that and spring for a current/last gen hardware raid card? Is SW raid just not that reliable enough?

We are on a tight budget (hence the HPE DL325 choice), plus we’re a small biz, any tips/guidance for a reliable cheap configuration would be much appreciated.

display – External monitor not working on full resolution with MacBook

I know this problem has been answered before, but I could not make any of the presented solutions work for me.

I just bought a Phillips 245B monitor with QHD (2560×1440) so I could run it in native resolution with my MacBook Pro (15-inch, Mid 2010) and its NVIDIA GeForce GT 330M GPU.

Unfortunately the maximum resolution that IOS lets me choose is 1080p.

I tried already:

  1. Preferences -> Displays -> option-click on Scaled
  2. Resetting the PRAM
  3. A different Mini Display Port to HDMI adapter (from Gravis) and a Mini Display Port to display port adapter, which resulted in a “no video output” on the monitor.
  4. Creating a new EDID file like here, which resulted in the monitor staying black.

I hope one of you guys can help me 🙂

Cheers

fullscreen – What are the advantages and disadvantages of full screen mode

I think viewing websites in fullscreen or not greatly depends on what device you are using. Because of this, I think there are no general advantage or disadvantage, but the choice should depend on the device.

Here are my thoughts:

Firstly, immersion or distance.

  • Working at desktop (and in a working enviroment) most people prefer a distant view, which gives you a mental distance either.
  • And at desktop, you need to control all currently running applcations. Probably you like to have a glimpse to Outlook while working on
    others.
  • Watching TV is fine for fullscreen. Here all attention is focused on the content and browser chrome or buttons would distract your pleasure.
  • Mobile and Tablet aren’t immersive by its physical size. I think immersion or distance aren’t a point to consider here.

Secondly, it depends on how many and how large the screen are.

  • Working with 2 monitors fullscreen isnt’t useful if you need to see two programs simultaneously.
  • If you have a 21 inch monitor at your desktop, you will be blown away by fullscreen. As a rule of thumb the diagonal size of screen is the ideal viewing distance.
  • Tv-Screen lack of resolution, a decent reason to avoid loosing pixels by unnecessary chrome.
  • Mobile and Tablet usually have small physical screens and its wise to go fullscreen in order to save space.

Thirdly, technical limitations

  • Windows just allows you to go fullscreen at first monitor by technical limitations of DirectX, which is forced by graphic cards.

  • TV introduced In-Screen Views (2nd channel at a corner) just a few years ago and lacks of a usable input device to steer multi-tasking.

  • Mobile were very limited by its CPU power, in its early years, and thus presented just a plain black/White pixel menu. Nowadays they are small computers though.
  • And Mobile just introduced multitasking recently, so it wasn’t possible to see two applications simultaneously.
  • Tablet hasn’t this limitation, because its brand-new. A technical limitation could be the size of your finger, forcing GUI elements to be as large as possible.

Fourthly, the history and habit

  • Desktop is used to be windowed (if you just reckon its GUI)
  • TV is used to be fullscreen.
  • Mobile is used to be fullscreen.
  • Tablet is used to be fullscreen either.

pathfinder 1e – Can a monk using empty body deal full damage to incorporal creatures?

Empty Body (Su): A monk with this ki power gains the ability to assume
an ethereal state for 1 minute as though using the spell etherealness,
using his monk level as his caster level. Using this ability is a move
action that consumes 3 points from the monk’s ki pool. This ability
affects only the monk and cannot be used to make other creatures
ethereal.

Can a monk using empty body deal full damage to incorporal creatures like shadows (undead incorporeal) ?

why is it possible to bypass android full disk encryption?

if you look up how to bypass the android lock screen, there seems to be endless examples.

  1. plug the phone into your pc, use adb android debugging tools, disable the lock screen
  2. forgot password option can get some recovery code sent to your email
  3. “Emergency Call trick” was a bug in specific versions of android that crashed the lock screen and let you into an encrypted device. how???
  4. etc

i’m sure there’s limitations to those examples, but still, none of this is possible at all if the drive was actually encrypted. what’s going on? i’m very confused. how do i encrypt my android device so it’s actually encrypted and worthless without the key????

lens – APS-C lenses on full frame Mirrorless bodies

Since the adapter moves the lenses further from the sensor, I’d imagine that the coverage of the lens would be larger, and that the adapter or body alters focus to compensate. Is this thinking correct?

No.

The entire point of the EF→RF adapter is to place an EF or EF-S lens at exactly the same distance from the sensor when used with an RF mount camera as the lens is placed when used with an EF mount camera.

The adapter moves the lens away from the camera so that the lens is the same distance away from the sensor as it would be when mounted on a camera for which it is designed. The image circle at the sensor is the same size whether an EF-S lens is used with an APS-C EF mount camera or with an RF mount camera + EF→RF adapter. The EF-S lens will always converge focused light 44mm behind the flange ring.

The design registration distance (sometimes colloquially referred to as the flange focal distance) for EF-S lenses is 44mm. This is the distance from the sensor to the flange on EF mount cameras, including all FF, APS-H, and APS-C models.

EF and EF-S lenses are designed to focus the light they project 44mm behind the lens flange ring.

The design registration distance for RF cameras and lenses is 20mm. This is the distance from the sensor to the flange on all RF mount cameras.

RF lenses are designed to focus the light they project 20mm behind the lens flange ring.

The EF→RF adapter is 24mm thick. When placed on an RF mount camera it provides a flange 44mm in front of the sensor on which an EF or EF-S lens can be mounted. The light projected by the EF-S lens will then come into focus 44mm behind the lens flange, just as it would when the lens is mounted on an EF mount camera.

Your intuition is partly correct, though, in a reverse sort of way. If it were possible to mount the EF-S lens closer than 44mm from the sensor of an RF mount camera, the image circle would be smaller than it would be at 44mm behind the lens’ flange ring. Of course, in such a case if the lens were focused at infinity the sensor would be too close to the lens and the entire image would be too blurry.

To increase the image circle of an EF-S lens larger than the size it is projected onto the sensor of an EF mount camera, the lens would either need to be moved even further forward than the 24mm the EF→RF adapter provides or magnifying optical elements would need to be placed between the lens and the EF→RF adapter. It would be exactly the same as using extension rings or a teleconverter/extender on an EF mount camera, except the extension rings or teleconverter/extender would need to be placed in front of the EF→RF adapter when using an EF-S lens on an RF camera.

I guess it depends upon the specific lens, but does anyone know of a list of EF-S lenses that provide full sensor coverage?

With some zoom lenses the projected image circle enlarges as the lens is zoomed to longer focal lengths. If one uses such an APS-C only zoom lens on a full frame (FF) camera, at the longer focal lengths the image circle might expand enough to fill the FF sensor. There would be no guarantees about how the image quality in the areas that would be larger than an APS-C sensor would hold up as the lens is zoomed, though, since the lens as designed was not intended to use those portions of the enlarge image circle in images created using an APS-C camera.

Though not an APS-C lens, the Canon EF 8-15mm f/4 L Fisheye is a lens that has an expanding image circle as it is zoomed. We’ll use it as an illustration.

  • At 8mm, the entire image circle is enclosed within a FF sensor.
  • At 10mm, the image circle is large enough to cover an APS-C sensor.
  • At 12mm, the image circle is large enough to cover an (now defunct) APS-H sensor.
  • At 15mm the image circle is large enough to cover a FF sensor.

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Based on the way the image circle of the EF 8-15mm f/4 L Fisheye works out, one might be able to predict that an EF-S lens without a baffle at the rear (which would crop the expanding part of the image circle by blocking that light from passing through the back of the lens) would need to be zoomed to about 2X the lens’ focal length at its widest angle of view. An 18-55mm lens, for example, may need to be zoomed to about 35mm or longer to expand the image circle enough to cover the FF sensor. Lenses that use a rectilinear, rather than fisheye, projection may or may not follow the same ratio, though.

Any EF-S lens that zooms in this way might be used with a FF camera when zoomed to the longer part of its range of focal lengths. That’s assuming that the camera would allow one to use the camera in FF instead of “crop” mode when an EF-S lens is attached to the EF→RF adapter. When an EF-S lens is adapted to an RF camera, the camera automatically crops the image to APS-C size dimensions in the center of the sensor. I’m not sure if any of the RF mount cameras have a menu item that would allow the user to override that. The menu item that allows for cropping third party APS-C only EF mount lenses¹ may or may not allow for telling the camera to use a Canon EF-S lens in FF mode.

¹ Every third party EF mount APS-C only lens I’ve seen has a standard EF mount, rather than including the extra tab used on Canon EF-S lenses that prevent them from being mounted to Canon FF cameras. The third party APS-C lenses will mount on FF Canon EF cameras, but of course the image circle will not be large enough to cover the full 36mmx24mm sensor. Apparently there is no electronic communication from the third party lens informing the camera that it has a smaller than FF sized image circle.

lens – APS-C lenses on full frame bodies

I was wondering about the use of lenses designed for smaller sensors on full frame bodies. This originally comes up regarding a discussion of Canon EF-S lenses with adapters on full frame bodies with RF mounts and the adapter. Since the adapter moves the lenses further from the sensor, I’d imagine that the coverage of the lens would be larger, and that the adapter or body alters focus to compensate. Is this thinking correct?