RAID 5 is a redundant array of independent disks configured using disk striping with parity. Data and parity are striped evenly across all disks. Striping allows users to rebuild data in the event of a disk failure, so no one disk is the bottleneck.   RAID 5 balances reading and writing and is currently one of the most commonly used RAID methods. It has more storage space available than RAID 1 and RAID 10 configurations and provides performance comparable to RAID 0.   A RAID 5 group has a minimum of 3 HDDs, but no maximum. Because parity data is distributed across all drives, RAID 5 is considered one of the most secure RAID configurations.   RAID 5 – Stripes data using distributed parity. RAID type 5 allows Clariion to distribute parity information to reconstruct a failed disk among the disks that make up the RAID group. As with RAID 3, if a single drive in the RAID group fails, the failed disk can be rebuilt from the remaining disks in the RAID group.     How RAID 5 works The advantage of RAID 5 comes primarily from its combined use of disk striping and parity. Striping is the process of storing contiguous segments of data across different storage devices; it allows for better throughput and performance. However, disk striping alone does not make an array fault tolerant. Disk striping combined with parity provides RAID 5 with redundancy and reliability.   RAID 5 uses parity instead of mirroring for data redundancy. When data is written to a RAID 5 drive, parity is calculated and written to the drive. While mirroring maintains multiple copies of the data in each volume for use in the event of a failure, RAID 5 can rebuild a failed drive using parity data, which is not saved on a fixed single drive.   By saving data on each drive, any two drives can be combined to equal the data stored on a third drive, keeping data safe in the event of a single drive failure. Drives in RAID 5 are hot-swappable, meaning a failed HDD can be removed and replaced without downtime.   STOR Technology Limited provides you with high-quality Raid Card, HBA Card, Hard Disk Drive, etc. such as: lsi megaraid 9460 8i, 05 50077 00 9560-16i, 05 25528 04 9380-8e. We provide you with higher-quality services and assured after-sales service. Welcome to visit us and discuss related products with us. Our website: https://www.cloudstorserver.com/ Contact us: alice@storservers.com / +86-755-83677183 Whatsapp : +8613824334699

RAID is a commonly used technology when it comes to data storage and processing. By connecting RAID cards in series, you can increase storage capacity, data redundancy and performance. This article will explain how to properly connect RAID cards in series to achieve the best results.   Step 1: Understand the different types of RAID levels Before you start chaining RAID cards, you need to understand the different RAID levels and the features and benefits they offer. Common RAID levels include RAID 0, RAID 1, RAID 5, RAID 6, etc. You can choose the appropriate RAID level to meet your storage and performance needs.   Step 2: Choose the right RAID card Make sure to choose a RAID card that is compatible with your system and choose the appropriate RAID level and features based on your needs. You can increase storage capacity and performance by plugging in multiple hard drives.   Step 3: Install the RAID card First, make sure your computer is turned off and unplugged from the power source. Then install it into the appropriate slot on your computer according to the guidelines provided by the RAID card manufacturer.   Step 4: Connect the hard drive After installing the RAID card, you need to connect the hard drive. Depending on the specifications of the RAID card, it may provide multiple internal or external interfaces that you can use to connect the hard drives.   Step 5: Configure RAID Level Once the hard drive is connected, you can press the designated key when the computer is turned on to enter the RAID card setup interface. Depending on the RAID level you choose, you can set how the drives are organized into an array, configure redundancy and performance options, and more. Please follow the guidelines provided by the RAID card manufacturer for proper configuration.   Step 6: Initialize and format the array After completing the configuration of the RAID card, you need to initialize and format the RAID array to prepare it for use. This process may be completed in the setting interface of the RAID card, or it may need to be executed in the operating system. Please be sure to follow the RAID card manufacturer's guidelines for proper initialization and formatting.   Step 7: Test and Monitor the RAID Array Finally, before using a RAID array, it is recommended that you test and monitor to make sure everything is working properly. You can use the tools provided with the RAID card to perform integrity checks and performance testing of the array.   By properly cascading RAID cards, you can achieve greater storage capacity, higher data redundancy, and better performance. But remember, before making any changes, make sure to back up important data and carefully read the RAID card manufacturer's documentation and guidelines before starting.   STOR Technology Limited provides you with high-quality Raid Card, HBA Card, Hard Disk Drive, etc. such as: lsi megaraid 9460 8i, 05 50077 00 9560-16i, 05 25528 04 9380-8e. We provide you with higher-quality services and assured after-sales service. Welcome to visit us and discuss related products with us. Our website: https://www.cloudstorserver.com/ Contact us: alice@storservers.com / +86-755-83677183 Whatsapp : +8613824334699

Manufacturer Part #: 05-50011-0223 Ports: 8 internal23 Connectors: Two (x4) SFF-864323 Storage Interface Support: SAS, SATA, PCIe (NVMe)23 Max PCIe (NVMe) Direct Attach Devices: Two x4, Four x223 Max Devices Per Controller: SAS/SATA: 240; NVMe: 242 Cache Memory: 2 GB 2133MHz The 9460-8i is a high-performance RAID card that offers many advantages, making it an ideal choice for data storage and processing. The following is an introduction to several main advantages of lsi megaraid 9460 8i:   Powerful performance: 9460-8i adopts advanced storage technology and processing capabilities, and provides excellent data transfer speed and processing performance by supporting PCIe 3.1 x8 interface. High reliability: 9460-8i integrates RAID function, which can realize data backup and recovery according to needs, providing data protection and fault tolerance. Flexible storage management: 9460-8i provides rich storage management functions. Users can easily manage storage devices, create logical disks, set up hot spares and global hot spares, and monitor disk status and performance. Data protection and security: 05 50011 02 9460-8i uses advanced encryption algorithms and key management to encrypt data during transmission and storage to prevent data leakage and unauthorized access. Compatibility and scalability: In addition, it also provides a variety of expansion options, supporting multiple hard disk interfaces and external storage expansion to meet the storage needs of different application environments.   In general, as a high-performance RAID card, 9460-8i has powerful performance, high reliability, flexible storage management, data protection and security, as well as wide compatibility and scalability. These advantages make it an ideal choice for the storage needs of large enterprises, providing excellent data processing and protection capabilities.   STOR Technology Limited provides you with high-quality Raid Card, HBA Card, Hard Disk Drive, etc. We provide you with higher-quality services and assured after-sales service. Welcome to visit us and discuss related products with us. Our website: https://www.cloudstorserver.com/ Contact us: alice@storservers.com / +86-755-83677183 Whatsapp : +8613824334699  

For parity RAID, after the RAID parameters are set on the RAID card and the RAID Settings are applied, all the disks in the RAID array need to be initialized. The time required is related to the number and size of the disks. The larger the disk, the more there are, and the longer it will take. Consider: What does a RAID card write to disk? You can think about a new disk just out of the factory, is there any data on it? Yes. What data? It's either all zeros or all ones. Here, all zeros refer to the actual data part, except for some special positions such as sector headers. Because the magnetic region on the disk has two states, either the n-pole or the S-pole. So that means it's either 0 or 1, and there can't be a third state. So what about these 0's or 1's? Of course, these magnetic regions don't have a chaotic state between 0 and 1. If we do RAID5 with a few disks, but do not change any data on the disks, let's see what state we will be in at this point, say 5 disks, 4 data disk space, 1 parity disk space, on the same strip, 4 data blocks, 1 parity block, and all the data on the blocks are all 0, then if we calculate RAID5, It's true, because 0 XOR 0 XOR 0 XOR 0 XOR 0 XOR 0=0, right. If you start with all 1's, then similarly 1 XOR 1 XOR 1 XOR 1 XOR 1 XOR 1=1, also true. However, if RAID5 is made of 6 disks, and the initial values are all 1, the situation is contradictory. 1 XOR 1 XOR 1 XOR 1 XOR 1 XOR 1 XOR 1 =0, in which case the correct result would be that the parity block is 0, but the initial disk is all 1, and the parity block data is also 1, which contradicts the calculation. If the initialization process doesn't make any changes to disk and we just write data, for example, we write a piece of data to the second extend, changing 1 to 0, and then the controller validates the data according to the formula: parity data for new data = (old data EOR new data) EOR. (1EOR 0) EOR1=0, and the new parity is 0, so the final data looks like this: 1 XOR 0 XOR 1 XOR 1 XOR 1 XOR 1. We figured it out to be equal to 1, but the RAID controller figured it out to be 0, so there's a contradiction. Why did you make this mistake? That's because the RAID controller didn't start with a proper data relationship in the first place, and the parity data of the parity block was inconsistent with the data block at the beginning, which led to more and more errors. So after the RAID controller is set up and enabled, in the process of initialization, it needs to write 0 or 1 for each sector of the disk, and then calculate the correct parity bit, or do not change the data of the data block, directly use these existing data, recalc the parity block data of all strips. On this basis, new incoming data will not be misrepresented. Tip: For products such as NetApp, RAID groups do not need to be initialized and are available immediately. Even adding disks to a RAID group that already has data does not cause any additional IO. Because it will reset all Spare disks, that is, send a Zero Unit SCSI instruction to the disk, and the disk will automatically perform the zero. For RAID groups made from these disks, there is no validation and therefore no initialization, or waiting for the disks to clear to zero.   Unleash the power of data! Classic reliability, innovative evolution - RAID Card brings you beyond imagination performance and reliability. Whether you are an individual user, an enterprise, or a data center, our RAID cards will provide you with unparalleled data protection and high-speed transfer. STOR Technology Limited provides original and new cloud storage products, such as megaraid sas 9341 8i, lsi 9361 8i 2gb, lsi megaraid 9460 8i, etc., welcome to consult.

Today we will talk about the initialization and configuration process of RAID cards as well as 0-channel RAID cards and driderless Raid cards RAID card initialization and configuration process The so-called initialization is to say that after the system is powered on, the CPU executes the first instruction on the specific address of the system bus, which is the address of the motherboard BIOS chip. The BIOS chip contains the first instructions for the CPU to execute, and the CPU executes them one by one until, at a certain point, an instruction tells the CPU to address the ROM addresses of other devices on the bus (if any). That is to say, after the system is powered on, the CPU will always execute the program code in the ROM of the SCSI card on the device to initialize the card. Initialization involves checking the card model, manufacturer, and scanning all SCSI buses on the card to identify each device and display it on the display. In the process of initialization, you can enter the BIOS of the SCSI card itself as the motherboard BIOS setting, setting content including check each connected to the SCSI bus device capacity, manufacturer, status, SCSIID and LUNID and so on. 0 channel RAID card A 0-channel RAID card is also called a RAID child card. 0-channel means that there is no SCSI channel in the backend of the card. After the child card is inserted into the PCI slot of the host, it can use the SCSI cards already integrated on the motherboard or already plugged into the PCI to control their channels, so as to realize RAID. This 0-channel child card is also inserted into a PCI card, but it needs to use the motherboard for 0-channel child card specially designed logic circuit, external and SCSI controller to form a RAID card to use, but this card is physically divided into two PCI slots. On a specific PCI slot on the motherboard, there is an ICR logic circuit that intercepts the address signals sent by the CPU and the interrupt signals sent to the CPU. CPU sent here originally used to control the SCSI controller address signals, are now all redirected by the ICR circuit to RAID daughter card, including the motherboard BIOS initial loading ROM, is not loaded into the SCSI card ROM, but into the RAID daughter card ROM. RAID cards completely replaced SCSI cards for the host system. The communication between RAID card and SCSI controller, including address information and data information, needs to occupy the PCI bus, which causes some performance loss. Communication between RAID daughter cards and SCSI cards is not redirected by ICR circuits. No Drive Raid card PhotoFast has designed a Riad card that is quite innovative. The traditional Raid card uses PCIX or PCIE bus to connect to the computer, but the PhotoFast Raid card uses SATA interface to connect to the computer, that is, the Raid card connects multiple physical disks into a number of virtual disks. And connect these disks to the computer through the SATA interface, and the computer thinks that it is connected to multiple SATA physical disks. This way, the Raid card can be used by most operating systems without any driver (most operating systems come with a SATA controller driver). If you have any questions, please consult and answer them at any time. STOR Technology Limited also offers a wide range of original high-performance products, such as megaraid sas 9341 8i, lsi 9361 8i 2gb, lsi megaraid 9460 8i, and more.