Ideal for applications requiring external storage connectivity, the 9300-8e HBA enables servers of any size to connect more than 1,000 SAS or SATA end devices in an external enclosure. It also has expanded storage to support performance and capacity-intensive applications that use 12Gb/s SAS, but can also support 6Gb/s SATA drives.   The LSI SAS 9300-8e is a very good performer; it excels in almost every test. This model supports 8 lanes (PCIe 3.0) and includes SAS 3.0 compliant mini-SAS HD connectors, allowing any size server to connect 1024 SAS or SATA end devices in external/internal cabinets. Additionally, when connected to the right SSD, this HBA essentially eliminates the bottleneck of 6Gb/s SAS, allowing even the most resource-demanding enterprises to achieve their performance goals. This is very evident in the drive tested above, as it allows the SSD to realize its 12Gb/s potential, reaching higher performance levels compared to SAS2, including very low latency and very high throughput. 1. Powerful performance: Using PCIe Gen3 interface and high-speed SAS connection, 9300-8e provides excellent data transmission speed and low latency, able to meet the needs of large-scale data storage and processing.   2. Scalability: The 8 external SAS ports of 9300-8e support a variety of disk array topology configurations. Users can easily expand or reconstruct the storage environment according to needs.   3. Data protection and reliability: Supports multiple RAID levels and data protection functions, including disk redundancy, data migration and disk health monitoring. These capabilities improve data reliability and recoverability, reducing the risk of data loss and business interruption.   4. Simple and easy to use: 9300-8e is equipped with user-friendly management software and interface, making configuring, monitoring and maintaining the storage environment simple and efficient.   High availability is an important feature of the 9300-8e. It uses advanced availability technologies, such as redundant controllers and hot-swappable components, to ensure that the storage system can still provide continuous data access in the event of a failure. This is very important for enterprises because data reliability and high availability are key to business operations.   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

MCX4421A-ACQN is suitable for applications requiring high bandwidth, low latency and high message rates. In the evolving digital era, there is an increasing demand for high-speed, reliable network connections. As a leading manufacturer in network technology, we are proud to introduce the MCX4421A-ACQN high-performance network adapter, providing superior connectivity and performance for modern data centers and enterprise networks.   MCX4421A-ACQN network card is a 10 Gigabit Ethernet network card. How to download and install the driver: 1. First download the MCP1600-E003E26 network card driver, and then click to open it. 2. After opening, read all the additional programs, click Confirm, and then select Next to install. 3. Wait for the installation to be completed before you can use it.   The adapter uses the latest network chip technology, combined with advanced protocol processing and traffic management functions, to provide excellent data transmission capabilities and low latency. Whether in large-scale virtualization environments or in demanding cloud computing applications, MCX4421A-ACQN can maintain stable performance and effectively reduce the complexity of network transmission.   The MCX4421A-ACQN （Passive Copper cable, ETH, up to 25Gb/s, SFP28, 0.5m）not only excels in performance, it also provides advanced cybersecurity features to protect the integrity and confidentiality of user data. The equipped hardware acceleration engine can process advanced encryption algorithms to ensure the security of sensitive data during transmission. In addition, the adapter also supports advanced virtualization technology, which can provide good network isolation and resource allocation, improving performance and management efficiency in multi-tenant environments.   In short, whether you are an enterprise user or a data center administrator, MCX4421A-ACQN will bring you an excellent network experience and unlimited possibilities.   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

RAID cards are an important technology when it comes to data storage and data protection. RAID cards are a solution for expanding storage capacity, providing data redundancy, and increasing data throughput. In this regard, the 9580-8i8e RAID cards is an excellent product.   The 9580-8i8e RAID features 8 internal SAS (Serial Attached SCSI) ports and 8 external SAS ports to support up to 8 internal and 8 external hard drives. This makes it ideal for handling large amounts of data and complex storage environments.   Key Features Include: Connect up to 240 SAS/SATA devices or 32 NVMe devices per controller Fits into rack-mounted servers with low-profile form factor and side-mounted SAS connectors Form-factor friendly cable exit Support critical, high-bandwidth applications with PCIe 4.0 connectivity Balance protection and performance for critical applications with RAID 0, 00, 1, 5, 6, 10, 50 and 60 JBOD mode with RAID 0, 1, 10 and JBOD for SDS environments Add more protection and peace of mind with flash cache protection   Overall, the 9580-8i8e RAID card is an advanced storage solution that provides high performance, reliability and flexibility. Whether it is a small enterprise or a large data center, this RAID card can meet its needs for storage performance and data security, helping users build a stable and reliable storage environment.   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

Solid-State Drive, the pinnacle of storage technology, has sparked a true revolution in computers and mobile devices. SSD provides excellent performance and reliability, bringing users a new computing experience. This article will explore the technological advancements of SSD and its many advantages for both individual and enterprise users. In this competitive market, SSDSC2KG019T8 has become the leader in the storage industry with its excellent performance and reliability.   1、Lightning speed Compared with traditional mechanical hard drives, SSDs have faster access speeds and more responsive responses. Whether it is booting the operating system, loading applications or transferring large files, the SSDSC2KG019T8 can always complete the task at stunning speeds. Whether you are an individual user or a business user, you can benefit from the lightning speed of SSD.   2、Reliability and Durability Because SSD has no mechanical parts, such as rotating platters and moving read-write heads, it is more durable and reliable than traditional hard drives. In addition, SSDs have lower failure rates and longer lifespan, allowing users to store and access important data with confidence.   3、Energy saving and environmental protection   SSDs have lower power consumption than traditional hard drives. It does not require a motor to drive the rotation of the platter, so it consumes less energy when working. In the long run, using SSDs also helps reduce carbon emissions and promote environmental sustainability.   With the continuous advancement of technology and the continuous reduction of costs, SSD will continue to lead the development of the storage industry and meet users' needs for fast, safe and efficient data storage. As a leading solid-state drive, SSDSC2KG019T8 has become a leader in the storage industry with its advantages such as high-speed performance, huge capacity, reliability guarantee, energy saving and environmental protection. Whether you are an individual user or an enterprise user, you can get an excellent storage experience and improve work efficiency by choosing SSDSC2KG019T8.   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  

The 9440-8i is an advanced RAID card designed for data center and enterprise applications. It provides excellent storage performance and reliability, providing strong support for users' storage solutions.   This RAID card uses advanced technology, including SAS 12Gb/s interface and PCIe 3.0 x8 host interface, to provide excellent transfer speed and responsiveness. It supports RAID levels 0, 1, 5, 10 and 50, allowing for flexible storage configuration according to user needs. Whether it is high-performance data transmission or data redundancy protection, 9440-8i can meet the needs of various application scenarios.   How to install megaraid 9440-8i raid card correctly? 1. Open the package and carefully check whether the device is damaged. 2. Prepare the computer and shut down the computer. 3. Remove the cover from the chassis. 4. Check the bracket for installing the equipment. 5. Insert the adapter into an available PCIe slot. 6. Connect the cables between the controller and the backplane or storage device. 7. Make sure the system provides the required airflow to the controller. 8. Replace the housing and reconnect any wires and cables. 9. Select the correct storage interface configuration file.   The best choice to improve storage performance! In stock, the original megaraid sas 9440-8i RAID card helps you create an efficient storage environment and have a worry-free storage experience at your fingertips!    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

The MCX512A-ACAT is designed for data center and enterprise applications. This network card uses advanced technology and innovative design to provide superior performance and reliability, providing an excellent solution for users' storage and networking needs.   The MCX512A-ACAT integrates a high-speed transmission interface, supports multi-port connectivity and parallel transmission, and can quickly handle large-scale data transfer and storage tasks. Its advanced data processing capabilities enable users to efficiently manage and access storage devices while achieving optimal data transfer speeds.   In addition, the MCX512A-ACAT offers excellent reliability and stability. Advanced fault tolerance technology is adopted, which can effectively deal with hardware failure and data loss to ensure data security and integrity. This makes it ideal for enterprise-class storage systems and data centers that meet stringent requirements for high availability and data protection.   Whether in virtualized environments or traditional physical server environments, the MCX512A-ACAT provides superior performance and stability, bringing greater efficiency and reliability to users' storage and network traffic management.   In summary, the MCX512A-ACAT provides an excellent solution for users' storage and networking needs through its outstanding performance, reliability and compatibility. Whether it is a large data center or an enterprise-class storage environment, the card can play an important role in improving the efficiency of data processing and transmission, creating a better work experience for users.   Contact us, to provide you with the best choice and solution, the factory price and three years warranty, is your most secure choice.

Currently, there are four main interfaces supported :IDE, SCSI, SATA and SAS.   The IDE interface is the standard interface for ordinary PCS.   SCSI: small computer system interface, and SCSI is not specifically designed for the hard disk interface, a wide range of applications, low CPU usage, mainly used for servers.   SATA: Serial port is better and faster, the main PC, the use of SATA(Serial ATA) port hard disk is also called serial hard disk, is the mainstream of the current PC hard disk, serial ATA bus uses embedded clock signal, has a stronger error correction ability, improve the reliability of data transmission.The serial interface also has the advantages of simple structure and hot swap support.   SAS: SAS is a new generation of SCSI technology, which uses serial technology to obtain higher transmission speed, and SAS interface technology can be backward compatible with SATA. Due to the compatibility of SAS systems, IT personnel can use hard disks with different interfaces to meet the capacity or performance needs of various applications.   Some RAID cards support multiple interfaces. For example, the 9400-16i supports SAS and SATA interfaces.Contact us, to provide you with the best choice and solution, the factory price and three years warranty, is your most secure choice.   Data backup has never been easier, and RAID cards protect your important data so you don't have to worry. Buy now and enjoy stability and peace of mind!  

This article mainly introduces the difference between SAS and SATA in hard disk drive (HDD). SAS's interface technology is backward compatible with SATA. Specifically, they are mainly compatible at the physical layer and protocol layer.   At the physical layer, the SAS interface and the SATA interface are fully compatible, and SATA hard drives can be used directly in a SAS environment. In terms of interface, the SAS controller can directly control SATA hard drives, but SAS cannot be used directly in a SATA environment because the SATA controller cannot control SAS hard drives.   SAS consists of three types of protocols at the protocol layer, and depending on the connected device, the corresponding protocol is used for data transmission. Serial SCSI protocol is used to send SCSI commands. SCSI management protocols are used to maintain and manage attached devices. The SATA channel protocol is used to transmit data between SAS and SATA.   In terms of price, SAS hard drives (such as ST8000NM001A SAS 8TB) are generally more expensive than SATA (such as HUS728T8TALE6L4 8TB SATA) hard drives. The rotation speed of SATA hard disk is between 5400 and 7200. SAS hard drives are basically 10,000 rpm or 15,000 rpm and are equipped with rotational vibration compensation to ensure data accuracy, so they have higher reliability. SAS hard drives are used in applications where data volume is large and data availability is extremely critical.   SATA is a great technology to have in your computer if you're storing information that you don't need to use on a regular basis. Contact us, to provide you with the best choice and solution, the factory price and three years warranty, is your most secure choice.

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.

The RAID controller has two options for handling upper-level write IO, as follows:   1.WriteBack mode: when the data is sent from the upper layer, the RAID controller will inform the host that I0 has completed immediately after saving it in the cache, so that the host can execute the next IO without waiting. At this time, the data is in the cache of the RAID controller card, but not really written to the disk, which plays a buffer role. The RAID controller waits for the time to be idle and either writes to disk one by one, or writes to disk in bulk, or queues the IO (similar to the queuing technique on disk) for some optimization algorithm to write to disk efficiently. Because the disk write speed is slow, the RAID controller in this case deceives the host, but gains high speed, which is "keep the easy to the top, keep the trouble to yourself." This has a fatal shortcoming, that is, once the power fails unexpectedly, the data in the cache on the RAID card will all be lost, and at this time the host thinks that IO has completed, so the upper and lower layers will produce inconsistency, the consequences will be very serious. As a result, critical applications such as databases have their own measures of consistency. Because of this, the high-end RAID card needs to use the battery to protect the cache, so that in the case of accidental power down, the battery can continue to power the cache to ensure that the data is not lost. When powered up again, the RAID card will first write the outstanding IO from the cache to disk. 2.WriteThrough mode: This is the writethrough mode, i.e., the top IO. Only after the data has actually been written to disk by the RAID controller will the host be notified of the completion of IO, which ensures high reliability. In this case, the cache's speedup is no longer beneficial, but its buffering is still effective. In addition to being a write cache, the read cache is also very important. Caching is a complex subject and has a complex mechanism, one of which is called PreFctch, or prefetching, which reads data on disk that are "likely" to be accessed by the host next into the cache before the host has issued a read IO request. How do we calculate the possibility? In fact, it is considered that the next time the host IO, there is a large rate of children will read the data in the disk location adjacent to the data read this time. This assumption is very useful for IO sequential reads, such as reading data that is logically contiguous, such as FTP large file transfer services, video on demand services, and so on, which are large file reading applications. On the other hand, if many small files are also stored contiguously on disk, caching will greatly improve performance, because reading small files requires a high IOPS, and without caching, it will take a long time to rely on the head seek to complete IO each time. There is also a caching algorithm, which is not based on prefetching, but on the assumption that the next time the host does IO, it may also read the data from the last or several (recent) reads. This assumption is completely different from prefetching. After the RAID controller reads a piece of data into the cache, if the data is changed by the host's write IO, the controller does not immediately write it to disk for storage. It stays in the cache, because it assumes that the host may read the data again in the near future. Then there is no need to write to disk and delete the cache, and then wait for the host to read, and then read from the disk to the cache, it is better to static brake, simply stay in the cache, wait for the host to "toss" the frequency is not high, then write to disk. Tips：Medium and high end RAID cards generally have more than 256MB of RAM as cache. Unleash the power of RAID Experience high performance data storage with our advanced RAID cards. Trust our 10 + years of expertise.STOR Technology Limited will also provide you with a large number of original high-performance products, such as: lsi 9480 8i8e, lsi 9361 4i, lsi 9341 8i and so on, three-year warranty and unsurpassed factory price to reduce your concerns.

This time let's talk about ROC technology and memory on RAID cards. RAID On Chip (ROC) technology ROC technology is a kind of cheap RAID technology which is put forward by Adaptec company. It uses the CPU processing chip in the SCSI card and realizes by adding RAID code into the ROM of the SCSI card. In 2001, Adaptec demonstrated its iROC technology, and in 2003 it was launched as HOStRAID. iROc is RAID on Chip, essentially is to use the RISC processor inside the SCSI control chip to complete some simple RAID types (RAID0, 1, 0+1). Because RAID0, 1 and 0+1 need small amount of computation, they can also be realized by using RISC processor in SCSI controller. With ROM code, RAID0, 1, or 0+1 implemented by iROC has boot capability and can support hot backup. In entry-level tower servers and 1U rack-mounted servers, SCSI control chips are often integrated on the motherboard, but stand-alone RAID cards are not standard. The starting point of iROC is to provide these systems with basic hardware data protection, and to purchase standalone RAID cards when more complex RAID5 is required. The emergence of iROC adds a simple option to the data protection scheme of low-end server products. The main disadvantage of iROC or HOStRAID is the poor operating system compatibility and performance, because there is no special RAID computing processor, so using this configuration of RAID will reduce the performance of the server system to a certain extent, and it only supports RAID 0, 1, 0+1, can only support a few SCSI disk RAID. Compared with IDERAID0, 1, and 0+1, the HOStRAID technology has similar features at a much higher cost. In addition, the Hostraid technology is bound to face competition at the lower end from the newer and better performance S-ATARAID. Memory on a RAID card The memory on the RAID card has two functions: data cache and code execution memory. RAM is required to execute the code on the CPU of the RAID card. If the code is read directly from ROM, the speed will be greatly affected. Therefore, the RAM of the RAID card has a fixed address segment for storing the code executed by the CPU. Most of this space is used for the data cache described below. Caching, or buffer memory, is all that is needed to buffer between the two sides of the communication. We know that between CPU and memory is L2Cache, which is higher than memory RAM speed, but not as high as CPU speed. Similarly, a cache is required between the RAID controller and the disk channel controller to fit in, because the RAID controller can process much faster than the channel controller can collect data outgoing from the connected disks on the channel. This cache does not need to use a high-speed circuit like L2Cache, and RAM is sufficient. RAM is fast enough for both. In addition to accommodating chip communication at different rates, cache RAM also serves to buffer data. For example, if the upper layer makes a 10 request, the RAID controller can queue the request in the cache and execute it one by one, or optimize the IO, merge one by one, and concurrency one by one. Experience unparalleled performance - industry-leading RAID cards from a team of professionals with over 10 years of experience. Discover the precision of original high performance products and services! A large number of raid cards can be provided, such as: megaraid 9341, lsi 9361 8i raid controller 05-25420-08, RAID 940-32i 4y37a09733, 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.