技术系统解析

ALS-自动车身水平系统automatic leveling systemAutomatic Leveling System automatic leveling system, this system will be on when the car tail height due to load variation And make the car tail height decreased or increased, a system to adjust to the original height. Can be divided into two kinds, one kind is the endAll independent suite, is only responsible for adjusting working car tail height, another is integrated into the suspension control system, this systemFollows approximately the action mode, when the vehicle load, such as the back seat for sitting or trunk has placed heavy and the tailstock sinks, is located in the rearControl arm height or position sensor suspension, will inform the computer of this situation, in the computer to confirm this situation for a period of timeAfter the inter think increase this car tail height changes are indeed from the weight, the transient effect rather than the road conditions, will start aAir compressor fills air into the rear shock absorber, the rear shock absorber will re the tail of the car to car top, high return to the original car body normalThe vehicle pose, on the contrary, if the car tail weight isreduced to make the car tail height increased, the ALS system will be inside the shock absorber parts highPressure gas is exhausted, so that the body remains the standard, the adjustment in the body can maintain a certain comfort for sitting posture, but also can keepCertain operating safety performance.Issued through the wheel sensor mounted on the wheel will be locked signal, the controller order regulator reduces the brake wheel cylinder pressure, reduce the braking torque, after a certain period of time, to restore the original oil pressure, so that a continuous loop (up to 5~10 times per second), always make the wheel in the state of rotation and the braking torque the biggest.ALS is not installed in the car, driving if hard on the brake pedal, wheel speed will decrease rapidly, when the friction braking force over the wheel and the ground when the wheel will be locked, completely locked wheel will make the tire and the ground friction decreased, if the front wheels were locked, the driver could not control the direction of travel of the vehicle and if the rear wheels were locked, it is very easy to appear the phenomenon of sideslip.ALS that was originally used in aircraft technology, is now very popular, a trace of it are visible to the level of more than onehundred thousand yuan car, some buses are also provided with ALS. Vehicles with ALS in the face of snow and freezing rain or other slippery roads, can be assured of the steering wheel, brake. It is not only effective in preventing accidents, but also reduce the abrasion of tires, but it does not make the car to shorten the braking distance, in some cases it will increase.Note: in the event of an emergency, brake pedal must touch the bottom, can activate the ALS system, when the brake pedal will have some jitter, sometimes there is some voice, but also can not release, suggesting that ALS system at work.Automatic Leveling System 自动车身水平系统, 此系统会于当车尾高度因载重量的变化而使车尾高度降低或升高时, 调整至原来高度的一项系统。

书山有路勤为径；学海无涯苦作舟
柴油机电控燃油喷射系统技术解析
现在的柴油发动机大多使用了电控喷射系统，与传统的机械喷射系统相比，电控喷射系统可以有效的提高柴油机的动力性和经济性，同时大幅度的降低尾气的污染。

今天我们就来简单说说柴油机电控喷射系统的工作原理和组成结构。

柴油机可燃混合气形成有什幺特点
1．混合空间小、时间短：供油的持续时间只有汽油机的1/20～1/10，只占曲轴转角的15°～35°
2．混合气不均匀，α值变化范围很大：大负荷时喷油量多、α值小、混合气浓；怠速时喷油量少、α值大、混合气稀，α值可达4～6。

3.边喷边燃，成分不断变化。

柴油机燃烧过程
燃烧过程可以分为四个阶段：
备燃期Ⅰ：从燃油喷出（A点）到出现火焰中心（B点）为止。

备燃期特点：
1、首先着火的是浓度合适是地方，火源是位置和数量是不固定的；
2、此时喷入的油量占每循环供油量的30%----40%；
3、备燃期积油量越多，达到一定程度时，一旦燃烧，由于同时着火的油量多，压力升高率过大，冲击性的压力是燃烧噪音加大，工作粗暴，机件磨损加剧。

速燃期Ⅱ：从出现火焰中心（B点）到产生最大压力点（C点）为止。

速燃期特点：
1、活塞正靠近上止点，燃烧几乎在等容下进行；
专注下一代成长，为了孩子。

电动汽车充电系统技术原理解析从直流充电到交流充电的演进随着社会的进步和环保意识的增强，电动汽车作为一种清洁能源的代表，正在逐渐取代传统燃油汽车成为未来的主流交通工具。

而电动汽车的充电系统又是电动汽车的核心技术之一。

本文将从电动汽车充电系统技术的演进角度出发，对电动汽车的充电系统技术原理进行详细解析。

一、直流充电技术直流充电技术是电动汽车充电系统最早采用的一种技术，主要特点是充电过程中直接将交流电转换成直流电进行充电。

直流充电技术在早期的电动汽车中占据主导地位，主要原因是其具有充电速度快、转换效率高的优势。

直流充电系统由充电桩和电池组成，充电桩通过直接与电池连接，将交流电转换为直流电供电给电池，充电效率高。

二、交流充电技术随着电力系统的发展和技术水平的提高，交流充电技术逐渐成为电动汽车充电系统的主流技术。

与直流充电技术相比，交流充电技术的主要特点是充电设备更加普及、充电成本更低、充电桩更加灵活，适应性更强。

交流充电系统主要由充电桩、电动汽车充电接口和电池三部分组成。

交流充电桩通过电动汽车充电接口将电能传输到电池中，充电桩会根据电动汽车的电池状态进行恰当的功率控制，保证充电的安全性和高效性。

三、充电技术的演进随着电动汽车市场的不断发展，充电技术也呈现出不断演进的趋势。

除了直流充电和交流充电技术之外，还有一些新兴的充电技术值得关注。

1. 快速充电技术快速充电技术是为满足用户对充电速度的需求而诞生的一种充电技术。

与普通的充电技术相比，快速充电技术能够通过提高充电功率，使电动汽车能够在短时间内充满电。

目前，快速充电技术主要采用直流充电方式，并通过先进的充电设备和充电管理系统，提供高功率充电服务。

2. 智能充电技术智能充电技术是利用信息技术、物联网技术等手段，实现对充电过程的精细管理和优化的一种充电技术。

智能充电技术通过对充电系统、电动汽车和用电环境等方面的监测和分析，可以在充电过程中动态调整充电功率、充电时间等，以提高充电效率，减少充电时间，并保证充电的安全性。

变线提示系统（LDWS）技术解析Change line prompt system (LDWS)On the long running process, we are prone to this problem. The endless straight road has beenStretching into the distance, under the blue sky alone long distance running is prone to visual fatigue, tensionOccur fatigue. But often this time driving is a very dangerous task, because, in this formState, not only your reaction speed will be very slow, and you are very prone to danger across the lane. In the nightBetween the driving, this situation will be even more dangerous.In order to avoid the danger, developed a variable line prompt system,Through this system, it can be at the rate of more than 80 km / hour, for non normal driving vehicleLane changing attitude to give tips. For example, when you didn't open the car steering lamp case occurred partialDisplacement, Lane left or right at this moment, is located in the front bumper on the infrared sensor will detect thisChanges, andthe signal is transmitted to the ECU, and then according to the direction of vibration of vehicle partial out of the driver's seat,For example, if the car to the left, will the vibration cushion left.In the front bumper, each side has three infrared sensors are arranged above a infrared emission twoTransistor and the induction sensor, through the infrared continuum emission to the pavement to induction car whether in normal driving laneDriving. This sensor can not only feel reflected from the white lane markings signal, moreover, can alsoIdentification of several other color mark. However, separation line of the traffic lane marking must be very clear that, for theThe color fading of the separation line of the traffic lane probably distinguish to some difficult.在长途行车过程中，我们很容易发生这样的问题。

电动汽车充电系统技术原理与解析1.充电模式：电动汽车充电系统一般采用交流充电模式和直流充电模式。

交流充电模式适用于低功率充电场景，可以通过家用电源进行充电；直流充电模式适用于高功率充电场景，可以快速给电动汽车充电。

2.电压等级：电动汽车充电系统常用的电压等级有三种，分别为单相220V、三相380V和高压直流（HVDC）。

单相220V适用于家庭充电需求，三相380V适用于商业充电需求，而HVDC适用于高速公路服务区等大型充电场景。

充电控制器是电动汽车充电系统的核心部件，其技术原理主要包括充电管理、电能转换和电流控制等方面。

1.充电管理：充电控制器通过与电动汽车通信，实现对充电过程的管理。

包括判断电池的充电状态、设置充电参数、控制充电功率等功能。

充电管理系统可以确保充电过程的安全性和高效性。

2.电能转换：充电控制器将外部电源输入的电能转换为适合电动汽车电池充电的电能。

在交流充电模式下，充电控制器将输入的交流电能进行整流和变压，将其转换为直流电能；在直流充电模式下，充电控制器将输入的直流电能进行调整，使其适合电池充电需求。

3.电流控制：充电控制器根据电动汽车电池的充电状态和充电需求，动态调整充电电流。

通过精确控制充电电流，可以确保电池的充电过程稳定和高效。

电池管理系统是电动汽车充电系统中的重要组成部分，其技术原理主要包括电池状态监测、充电控制和温度管理等方面。

1.电池状态监测：电池管理系统通过监测电动汽车电池的电压、电流和温度等参数，实时了解电池的状态和健康状况。

通过对电池状态的监测，可以及时发现电池故障和异常情况，并采取相应的措施。

2.充电控制：电池管理系统可以根据电动汽车电池的充电需求和电池的当前状态，进行充电控制。

包括充电截止电压控制、充电过程中的充电电流控制等。

通过合理的充电控制，可以延长电池的寿命和提高充电效率。

3.温度管理：电动汽车电池的温度对充电性能和寿命有重要影响。

电池管理系统可以监测电池的温度，并根据实时情况进行温度管理。

智能家居系统中的物联网技术解析随着科技的不断发展，智能家居系统已经成为了人们生活中的一部分。

而这背后支撑着智能家居系统运作的核心技术之一就是物联网技术。

本文将对物联网技术在智能家居系统中的应用进行解析。

一、物联网技术概述物联网技术（Internet of Things，简称IoT）是指利用各种信息传感器将物理世界与互联网相连接，实现物品之间的互联互通。

它可以实现物品之间的信息交互和数据传递，使得各种设备、传感器和系统实现智能化的互动。

二、物联网技术在智能家居系统中的应用1. 智能设备互联互通物联网技术使得智能家居中的各种设备可以通过无线网络进行互联互通。

例如，用户可以通过手机APP控制智能家居中的温度调节器、照明系统、家庭安全系统等设备，实现对家居环境的便捷控制。

2. 数据采集与分析智能家居中的传感器可以实时采集环境数据和用户行为数据。

通过物联网技术，这些数据可以被上传到云端进行存储和分析。

通过对数据的深度分析，智能家居系统可以了解用户的习惯和需求，并做出相应的智能化调整，提供更加个性化的家居体验。

3. 安全监控与管理物联网技术在智能家居系统中还可以应用于安全监控与管理。

智能家居中的摄像头、门窗传感器等设备通过物联网技术实现与用户手机的连接。

一旦有异常情况发生，用户可以即时收到警报通知，保障家庭安全。

4. 节能与环保智能家居系统通过物联网技术可以实现对能源的智能化管理。

例如，通过对使用者的习惯和行为的分析，系统可以自动调整家中的温度和照明情况，以达到节能和环保的目的。

5. 人机交互与智能化物联网技术让智能家居系统变得更加智能化和智能互动能力更强。

用户可以通过语音识别、手势识别等与智能家居进行交互。

例如，用户可以通过语音命令控制家中的设备，让智能家居系统更加智能、人性化。

三、物联网技术在智能家居中的挑战与前景尽管物联网技术在智能家居系统中有很大的应用前景，但也面临一些挑战。

首先是数据隐私与安全问题，大量的个人数据被传输到云端，对数据的安全性提出了更高的要求。

New NVMe All-Flash A250 System – A Technical Deep DiveNetApp has introduced a new entry-level NVMe All-Flash system for small and medium-sized enterprises, called AFF A250. Doing that, NetApp has completed its NVMe offer, which now spans from A250 through the mid-range class A400 system to the robust A800. The big news, as well, is that the latest version of ONTAP that comes with A250, besides the support for SAN and NAS protocols, will provide support for the S3 protocol (object storage). That makes NetApp a steady leader in the field of UNIFIED FAS storage systems.A250 HardwareNew A250 comes in a 2U internal chassis, which contains two controllers and two redundant power supplies. On the frontend of the device there is a space, provisioned to store up to 24 internal NVMe SSDs. The device supports expansion with one additional external NS224 NVMe shelf. It is also possible to expand it with one DS224C or DS2246 SAS shelf, but only to transfer existing ones. When purchasing A250 devices, it is not possible to purchase additional DS224C shelves. To conclude, it is possible to expand the device with a single NVMe or SAS shelf.The controllers on A250, work in Active/Active mode, as usual. It means that the controllers work independently, each serving their workloads.In cases of failure of a single controller, the other one, in addition to its own, takes over the tasks of the controller that is out of function (takeover occurs in the interval from 2 to 15 seconds).This process is transparent, meaning that the applications do not stop working during the failover operation.On the occasion of a sudden power failure, all unregistered data will be copied to the controller's internal flash memory.The data will be saved, in cases of longer failures (battery-assisted NVRAM memory).AFF A250 has 2x64-bit 12-core Skylake-D CPUs and 128GB RAM.Scale-outBesides the expansion with one more shelf, A250 can be extended with the additional NetApp FAS/ AFF systems (scale-out) - with up to 24 nodes in NAS or up to 12 nodes in SAN environment. The nodes added to a scale-out cluster can be of different performance and different generations. To check the compatibility list, please visit NetApp's Hardware Universe portal https:// or contact your local Partner.NVMeNetApp A250 is an end-to-end NVMe system, meaning it uses both the NVMe protocol to access SSDs on the storage system and the NVMe over Fabrics transport protocol for host connections. This new protocol is designed especially for future-generation flash and SSDs, and it is significantly simpler and optimized to deliver maximum throughput and fastest response time. NVMe supports the execution of tens of thousands of parallel commands, can efficiently use not only SSDs, but also multi-core processors and gigabytes of memory, and parses and manages data successfully. By using the NVMe standard, it is possible to deliver 60% more performance, as well as to reduce delays by up to 50% ConnectivityIn terms of connectivity, there are two mezzanine slots per controller, which can accommodate the following types of cards:- 4-port 32Gbps FC and 4-port 10 / 25Gbps Ethernet (RoCEv2) for host connectivity- 2-port 100Gbps Ethernet (RoCEv2) for added NVMe shelf (slot 1 only) or 4-port 12Gb SAS for additional DS224C or DS2246 shelf.- Each controller has two 10Gbps BASE-T ports for host connectivity, as well as 2x 25GbE ports for HA and Cluster Interconnect connection (for scale-out needs).The figure below shows one of the two A250 controllers inside the chassis.Besides the internal drives, AFF A250 supports up to 24 NVMe SSDs or 24 SAS SSDs, in an additional shelf. Find currently supported capacities on NetApp Hardware Universe portal: https:// or check it up with your local Partner.Software Features included in the basic package (Core Bundle)iSCSI/FC/CIFS/NFS/S3 - the device comes with all licensed protocols, as well as the necessary physical ports to connect to servers /clients. The support for the S3 protocol is a novelty.Snapshot - NetApp functionality patented for the creation of a large number of data images in SAN and NAS environments. NetApp Snapshot can be created within seconds, regardless of the size of the data set, because this functionality does not overwrite/copy data while creating a Snapshot. For that reason, there can be thousands of Snapshots on the system without affecting performance.SnapRestore - presents functionality that performs data recovery from Snapshot almost instantly, without copying data, both in NAS and SAN environment. Starting from ONTAP 9.8 release, SnapRestore is included in the basic software functionality package.Inline zero deduplication–Inline removal of all-zero blocks before these blocks are stored on disks.Inline/post-process compression–data compression performed on a "group of blocks" level, enabling significant space savings. Inline compression performs before the data is stored on disks. The data which requires more resources is subsequently compressed, using post-process compression.Inline/postprocess deduplication - aggregate-level deduplication that takes a 4KB block as a unit, regardless of the data stores as a SAN or NAS. Inline deduplication performs before the data stores on disks. The data that requires more resources are subsequently deduplicated, using post-process deduplication, also at the block level.Inline data compaction - This functionality is in charge of packing logic blocks smaller than 4KB into a single 4KB physical block on disks. The process takes place before the data stores on disks, and it produces a dramatic increase in effective space on All-Flash systems. It is enabled on FAS systems, as well.Take a look how this process works when all of these three functionalities are involved - deduplication, compression and compaction:1.The first thing that happens, as the data comes to registration, is the detection of blocks thatcontain all zeros. These blocks do not store on disks. The metadata is recorded instead of them.2.After that, an inline deduplication process starts. This functionality was first implemented inversion 8.3.2, but the testings were performed only on the data that occurred in memory. With the current version 9, this functionality applies to both the data in memory and the data recently written to disks. In addition to this process, NetApp offers the postprocess deduplication option, where the data, not already deduplicated in the inline process (before writing to disks), is being checked and deduplicated subsequently.Deduplication takes place at a system level, which means that all data on the storage system is considered as a single set that needs to be deduplicated.3.The next step is inline compression. This process determines effectively whether a block canbe compressed by more than 50%. The check occurs to prevent spent of CPU cycles on data, which compression could bring more losses than gains. In addition to this process, NetApp has also the ability of a postprocess compression, which can perform compression even after the data is written to disks.4.After the completion of all the processes described above, but before the data is written todisks, a process called data compaction occurs (functionality presented in version 9 of the ONTAP OS). All the data that has gone through a compression process previously, or has not yet passed verification, are the candidates for data compaction. Before writing to physical blocks, small, uncompressed data blocks (less than 4KB), as well as the data with the compression ratio of more than 75%, are logically placed in a 4KB physical block, which is, in such a form, written to disks. As a rule, the smaller the documents are, and compression is higher, inline compaction has a greater synergistic effect.NetApp All-Flash Efficiency Guaranteed 3:1For all ONTAP-based All-Flash systems, NetApp guarantees entry of stored data in a 3: 1 ratio. It means that NetApp guarantees storage for three times more data in comparison with the amount of data specified as usable capacity. The conditions for this warranty application are the virtualized environment and the data that hasn’t been compacted or encrypted previously. The procedure for receiving the warranty consists of the user’s electro nically signed confirmation that their environment meets these requirements.In short, there are three conditions for fulfilling the guarantee:- the user’s environment is virtualized- stored data has not been compressed previously- stored data is not encrypted.Effective data protectionNetApp Volume Encryption - software-based technology used for the encryption of data at rest, at a volume level. The encryption key is only available to the storage system and ensures that data can not be read in cases of disks' removal from the system. Both data and metadata are encrypted. The possibility of using the built-in Onboard Key Manager allows you to store keys on the system, and there is also the possibility of using an external Key Manager. NVE can be used on any type of aggregate (HDD, SDD, hybrid), as well as in conjunction with NSE disks, as the second level of encryption. The NVE license is free and comes with the "Encryption" software Bundle.RAID-DP – RAID-DP is a NetApp default RAID type (RAID-Double Parity). It requires two parity disks per RAID group and protects data in case of a simultaneous failover of up to two disks. For RAID-DP, the recommended RAID group size is 12 to 20 HDDs and 20 to 28 SSDs, which also reduces the cost due to a smaller number of parity disks. RAID-DP also allows on-line expansion of RAID groups.RAID-TEC - this patented NetApp technology is just an extension of technology introduced by NetApp a long time ago - RAID-DP (no penalty RAID 6). A novelty related to RAID-TEC is that this technologyallows the simultaneous failure of any 3 disks within a RAID group. If we take as an example a RAID group composed of 24 disks - even 21 of them are used for data storage, while data protection is provided by the remaining 3 disks. The ratio of data and parity disks, in this case, is 21: 3, or 7: 1.This mechanism has application in cases of large-capacity disk usage (larger than 6TB), both rotating and SSD disks. With large capacity disks, the recovery time is very long, and the additional protection of the data set is necessary. NetApp is the first storage vendor to certify 15.3TB SSDs.Thin Provisioning–functionality used for presenting to servers/clients significantly higher logical capacity than the physically occupied capacity on the storage system itself.FlexVol - logical containers. Over FlexVol all other functionalities are performed: Snapshot, deduplication, compression, compaction, thin provisioning,SnapMirror, SnapVault, etc. FlexVol logical volumes can be dynamically expanded but also reduced without interruption of applications’ operations.FlexGroup - In large enterprises, a single namespace can require petabytes of space, highly exceeding FlexVol's capacity of 100TB. FlexGroup is a volume that supports up to 400 billion files, with 200 member volumes, working together to dynamically balance the load and allocate space equally across all members. No additional management or monitoring of FlexGoup is required. FlexGroup is easy to create and share with users. ONTAP does everything else.Storage QoS - this functionality ensures that critical workload performance will not be degraded by other workloads competing for the same resources. It is possible to set QoS Max and QoS Min for each workload. QoS Max or Qos ceiling is the maximum throughput that a certain workload can "occupy", and it limits its impact on system resources. The QoS Min or QoS floor is adjusted at critical workloads, ensuring that it will receive the minimum necessary throughput values regardless of the other workload requirements. It is possible to set both QoS Max and QoS Min at the same workload. Adaptive QoS will automatically increase/decrease the QoS value with the increasing/ decreasing of the workload size, maintaining the IOPS/TBs (GBs) ratio.System Manager - OnCommand System Manager is a graphical interface that allows users to manage NetApp storage systems and objects (disks, volumes, aggregates) and perform general tasks related to storage systems from a web browser. Cluster administrators can use the System Manager to administrate the entire cluster and its resources.Unified Manager - Active IQ Unified Manager is a graphical product that provides extensive monitoring and management capabilities across multiple NetApp ONTAP systems (clusters) to enable management of the availability, capacity, security, and performance. Unified Manager can be installed on Linux and Windows servers or as a virtual appliance on a VMware host.Virtual Storage Console, VASA Provider, and Storage Replication Adapter - VSC, VASA Provider, and SRA capabilities for the VMware vSphere product suite provided through a single virtual appliance. This toolkit enables vCenter Server plug-ins that provide end-to-end lifecycle management for virtual machines in environments that use NetApp storage systems.ActiveIQ - NetApp Active IQ is a web-based service created for predictive analytics and proactive support to provide optimized operations. Active IQ works with AutoSupport and is used to present information and enable an easy analysis for modeling and optimizing storage infrastructure. Disaster Recovery Solution - MetroCluster IPMetroCluster functionality is realized by a combination of 2-point systems at two remote sites, which gives business continuity even in the events of a complete failure of one of the sites. Synchronous data replication is realized with synchronous replication (SyncMirror) to provide continuous data availability on both sites, up to a maximum distance of 700 km. The implementation of MetroCluster maintains the business continuity of critical applications and workloads, in the event of a disaster at one location. It enables a simple and transparent disaster recovery - without data loss, and with a simple configuration that doesn't require subsequent changes at a remote location.MetroCluster-IP architecture supports 4-node configurations. It can use existing Cluster Interconnect switches, and it has a range of up to 700km distance.MetroCluster-IP can work in Active/Active mode when both sites serve their customers and replicate data to each other, or it can work in Active /Passive mode when only one site serves users and data is replicated to the other (DR) location.Metrocluster-IP has a Mediator software solution that comes in the form of a virtual appliance. It is installed in a third location and serves to automate a switchover in the event of a failover somewhere in the data center. It enables avoiding the so-called Split Brain scenario.MetroCluster-IP software is not licensed, and it is a part of every ONTAP system.Additional software functionalities (DP Bundle)FlexClone– Snapshot copy of production data that can be written over. It behaves like an independent copy, although there is no data copying here. Only changes are recorded at the level of a 4KB block. For example, there are dozens of developers who need a copy of a database to test. FlexClone functionality allows all developers to use the same database blocks, but only changes, each of them makes individually, are recorded. It drastically reduces disk space usage because there is no data copying.SnapMirror - NetApp software that relies on Snapshot technology. It is used for replication within the same system, or on another system (location). SnapMirror works at the FlexVol volume level, and it is possible to choose between synchronous and asynchronous replication. The synchronous replication can be set as a:1. strict replication - it will not send a confirmation to the host if the data is not entered in both sites (replication failed), or2. relaxed replication – it will allow data to be written only to the first location and later automatically synchronize with the second location when replication between sites is re-established.SnapMirror Cloud - a technology that enables the transfer of ONTAP Snapshots directly to object storage. It can be located on-premises or in the cloud. Switching is completely secure and efficient. It provides integrated data mobility and protection at the level of the entire Data Fabric. SnapMirror Business Continuity - SM-BC is a solution that extends SnapMirror, by enabling automatic failover for business-critical applications without any manual intervention.SnapVault - NetApp software used to backup data from one storage system to another, ie. from faster to slower disks (SSD to SATA / SAS), or to transfer backup data from the primary or multiple locations to the secondary location. SnapVault can be set at certain time intervals, so it allows sending consistent backups to a secondary location.SnapCenter - A tool that provides centralized control and review, and gives users the ability to manage application-specific backups, restores, and clones. Using SnapCenter, database administrators, as well as administrators of virtualization platforms, use a single tool to manage backup, restore, and cloning operations for a variety of applications, databases, and virtual machines. Optional software functionalities (out of package)SnapLock - Compliance solution of a high performance created for organizations that use a write-once read many (WORM) storages to keep critical files unchanged for regulatory reasons. The same license allows the use of a SnapLock in two modes. The first one is a more strict Compliance mode, which meets external (government) requirements, and the second one is a flexible Enterprise mode for internal regulations. SnapLock uses the tamper-proof Compliance-Clock to determine the retention period of WORM files. SnapLock licenses now come with …the Security and Compliance“software Bundle.Multi-tenant key management - is a functionality that enables each tenant or each Storage Virtual Machine on the storage system to manage its keys through its separate key manager. This license comes with “the Security and Compliance” So ftware Bundle.FabricPool - A hybrid storage solution that uses All-Flash aggregates as a performance tier and object storage as a capacity tier. FabricPool will store "hot" data on All-Flash, while it will move inactive "cold" data to object storage, which can be located both in the cloud or on-premises (NetApp StorageGRID).Inactive data can take up to 80% of the total storage space, making FabricPool an extremely efficient solution, which significantly reduces storage costs without affecting performance, efficiency, or protection. It monitors user activities over each block of data and marks them as "hot" or "cold". Metadata always stays on SSDs, while "cold" data is packaged in 4MB objects and sent to object storage. The whole process is completely transparent for users and applications.FabricPool requires an additional cluster-wide license, which is paid per TB for use with non-NetApp object systems. Now it comes with a "Hybrid Cloud" software Bundle. No FabricPool license is required when it's used with NetApp object storage.Hardware data encryptionNetApp Storage Encryption (NSE) - a support for special self-encrypting disks that encrypt data while they are written to disk. The data is not able to be read without the encryption key located on the disk. The encryption key, on the other hand, can only be accessed through authenticated nodes. Self-encrypting disks must be ordered when purchasing the device and cannot be mixed with non-encrypting disks on the same system.。

智能家居系统技术全解析随着科技的不断进步，人们的生活也变得越来越方便。

智能家居系统技术就是其中的佼佼者。

智能家居是将智能化技术应用于家居领域的一种系统。

通过对家居设备的自动化控制，就可以实现智能化的家庭生活，带来更高的舒适度、便利度和安全度。

那么，智能家居系统技术到底是什么呢？它可以实现哪些功能？接下来，就让我们来深入探讨一下智能家居系统技术的全貌。

一、智能家居系统的组成智能家居系统包括控制中心、传感器、执行器、终端设备、通信网络等部分。

其中，控制中心是系统的核心。

它是智能家居系统的大脑，负责指挥传感器、执行器等其它部件工作。

传感器主要是用来感知环境因素，例如温度、湿度、CO2 等，以及人员的动静等。

执行器是收到控制中心指令后，能够自动地控制终端设备的设备，例如电灯、电视、门锁、窗帘等。

终端设备是用户直接接触的设备，例如智能手机、平板电脑、智能音响、智能灯泡等。

通信网络则是将各设备连成一体的纽带，例如有线网络、Wi-Fi 等。

二、智能家居系统的优势智能家居系统的优势主要表现在以下几个方面：1. 增强居家安全：传感器能够实时监测家中的状况，例如天然气泄漏、窃贼入侵等异常情况，控制中心能立即发出警报，并采取相应措施，保证居家安全。

2. 提升家居便利度：传感器能够实时感知人员的动静，控制中心能够根据人员的情况自动开启或关闭家中的设备，例如智能灯泡、智能窗帘等。

3. 增强节能环保：传感器能够实时监测家中温度、湿度、CO2 浓度等环境因素，控制中心能够根据环境因素自动地调整家中各设备的工作状态，实现精细化控制，达到节能环保的目的。

三、智能家居系统的应用场景智能家居系统的应用场景非常广泛。

无论是在家居生活中，还是在商业、酒店、娱乐等领域，都有着广泛的应用。

在家居生活中，智能家居可以实现智能门锁、智能灯光、智能空调等家居智能化的功能。

在商业领域中，智能家居可以实现智能展示、智能售货机等功能，提升商品的展示效果，提高售货机的销售效率。