Cloud Computing: Storage, Architecture, and Migration
Data Storage Comparison
| DAS | NAS | SAN |
|---|---|---|
| Storage directly connected to a single server | Centralized storage accessible over a network | High-performance, block-level storage network |
| Directly attached via SATA, SAS, USB, or Thunderbolt | Connected via Ethernet (TCP/IP) | Connected via Fibre Channel (FC) or iSCSI |
| Uses file system of the host (NTFS, HFS+, ext4, etc.) | Uses file-based protocols (NFS, SMB, CIFS) | Uses block-level protocols (iSCSI, Fibre Channel) |
| Limited by server expansion slots | Easily expandable by adding more |
Minecraft 1.9 Combat Update: Terrain, Structures, and More
General
On April 1, 2015, the ‘Love and Hugs’ snapshot 15w14a was released. Obviously, it was just an April Fools’ joke, but hidden in the snow textures of this snapshot was a QR code. The link to this code is below, but if you don’t have a QR code reader, it reads ‘1.9 The Combat Update’. So it’s confirmed! 1.9 will be THE COMBAT UPDATE! http://imgur.com/ZGnqLdy
The reason 1.8 took so long wasn’t only because of the insane number of new features added into the game itself, it was mostly because there
Read MoreWood and Metals: Properties, Types, and Applications
Wood: A Natural Vegetable Material
Composition and Structure
Wood is a raw vegetable material obtained from the trunks and branches of trees. It is primarily composed of cellulose fibres (providing flexibility) and lignin (which makes it rigid and hard).
Technical Characteristics of Wood
- Density: Wood is generally a light material compared to metals or stone.
- Hardness: Resistance to scratching or indentation; varies greatly between wood types.
- Toughness: Ability to absorb shock or impact without breaking.
IoT Protocols: Modbus, NB-IoT, LoRaWAN & Cloud Platforms
Modbus Protocol Details
Answer:
Modbus is a serial communication protocol developed by Modicon (now Schneider Electric) in 1979 for industrial automation. It is used to connect electronic devices in Supervisory Control and Data Acquisition (SCADA) and Distributed Control Systems (DCS).
Key Features of Modbus
- Works on a master-slave (client-server) architecture.
- Supports communication over serial lines (RS-232, RS-485) and TCP/IP networks.
- Uses function codes to read and write data from/to devices.
- Open-
Understanding Key Building Structures and Components
Building Structures
There are three main types of building structures:
- Solid structures: Use walls made of materials like bricks, blocks, or stone to support the building.
- Frame structures: Use horizontal beams and vertical pillars made of wood, metal, or concrete to support the building and are quicker to build.
- Combination structures: Use both solid walls and a frame.
Load-bearing masonry was once common because it is strong and looks nice, but it is slow and labor-intensive to build. Frame structures
Read MoreUnderstanding Hard Drives and Optical Drives: Storage Solutions
Hard Drives: Traditional Storage
The hard drive is the primary means of storing large amounts of information on a computer. It belongs to a type of memory called mass memory. Although significantly faster than other storage media, it has some disadvantages. External hard drives with USB, Firewire, or eSATA interfaces offer portability. However, even though an external hard drive is portable, it’s not always the best way to transport information because it’s composed of mobile and sensitive components
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