Udev in linux subsystem helps to write scripts to do a specific action when a new device is added or an existing device is removed from the system.
The following article helps you to write your own basic script by identifying a device and adding the specific udev rules. Refer An introduction to Udev: The Linux subsystem for managing device events for more details.
All the drive vendors who matches the same capacity may not have the same size. Drive coercion is a storage controller property to force (coerced) the drive capacity to the minimal size supported by the drive in the disk group.
4 fixes for Critical Process Died
Here are 4 solutions for you to try. You may not need to try them all; just work your way down until you find the one works for you.
- Run a virus scan
- Update device drivers
- Undo recent changes
- Run SFC & DISM
Source: Critical Process Died BSOD Error in Windows 10 [SOLVED] – Driver Easy
Hardware development comes in different phases. This article gives a nutshell of each phase.
PRD(Product Requirement Document)
PRD will allow the engineers to start doing the work on the hardware and mechanical level. You might end up with a mock up in order to see a non-functional design but the game is to reach something that some beta users can manipulate and that we could call MVP (Minimum Viable Product).
EVT (Engineering Validation and Testing)
Once your hardware is finalised, it needs to be tested and validated. This step is called EVT. The product cannot pass EVT if not all functional requirements are matched and if the hardware is providing the results and metrics that were expecting in the PRD through the specifications for example. Hardware and it will be tested for thermal, power, and EMI stresses.
DVT (Design Validation and testing)
The hardware will be produced in a small lot and will go through thorough test like dropping it from a certain height, burning it, check if it is waterproof, etc. Every country has different certifications and standards for products.
PVT (Production Validation and Testing)
This stage DFM (Design For Manufacturing) has been done and the moulds are ready, so is the stencil for your PCB (printed Circuit Board) by setting up a production line.This stage also consists DFA (Design For Assembly) as it can happen at different stages but most probably close to the end and it will allow engineers find the best and most efficient way to assemble the product after getting produced.
Source: The different engineering validation stages in a nutshell | EVT, DVT, PVT
The source article provides you the method to run dd in ESXi.
dd if=/dev/zero of=/vmfs/devices/disks/mpx.vmhba1:C0:T3:L0 bs=512 count=10 conv=notrunc
Source: StorageMonk: Running dd on ESX
Disk write cache is a feature provided by drive vendors to improve the performance of the disks.
This feature can result in data loss if there are sudden power outages.
It depends on the application to decide whether to enable disk write cache or not.
For SATA SSD drives the following commands can be used to enable and disable write caching.
To know write caching is enabled/disabled
hdparm -W /dev/sda
To enable write cache
hdparm -W 1 /dev/sda
To disable write cache
hdparm -W 0 /dev/sda
where, /dev/sda is example SATA SSD used.
You can get the details of the drive susing lsscsi command.
Source: How to Disable Disk Write Caching in Ubuntu To Prevent Data Loss | UbuntuHandbook