Why is blockchain deposit a private account
·Limited dependence on Windows fail over clustering: DAG uses only a limited part of the clustering capabilities provided by the windows fail over clustering component. Dag uses the functions of cluster database, cluster heartbeat and file share witness. In exchange 2007 and earlier versions, exchange was an application operated by a Windows failover cluster. However, in exchange 2010, the situation has changed. The exchange cluster resource DLL and all cluster resources created ring windows failover cluster registration have been removed from the exchange 2010 code
· incremental deployment: DAG still uses Windows fail over cluster components (such as cluster database, heartbeat and file sharing witness functions), so Windows Server 2008 SP2 or R2 enterprise environment is needed to configure the exchange 2010 mailbox server in DAG. However, exchange 2010 supports incremental deployment, that is, there is no need to form a cluster before installing exchange 2010. Users can install the exchange 2010 mailbox server, then create a DAG and add databases and servers to it if necessary
· coexist with other exchange roles: when using CCR, users cannot install exchange servers protected by CCR on mailbox servers (cluster nodes). When using DAG, the mailbox server in DAG can also install other exchange roles. This feature is very beneficial for small organizations. This is because DAG protected mailbox servers can coexist with other exchange roles. This also means that users can use two machines as dedicated exchange servers to provide a complete rendancy solution. Of course, this requires configuration file sharing witness, which is easy to implement in a user environment. File sharing witness does not need to run the same version of windows, just run Windows Server 2003 or later. Another point to note is that if users use two exchange 2010 servers and want a complete rendancy solution, they must use external hardware or software based on load balancing solution to provide client access service
· completely managed by exchange tools: when using CCR in exchange 2007, you must use the combined tools of exchange and cluster management to configure and manage CCR clusters. When DAG is used in exchange 2010, there is no need to use cluster management tools for any initial configuration and management, and exchange administrators in enterprises no longer need to have cluster management experience
· database level replication: in order to support the new features of DAG, the exchange 2010 database has been migrated to the organization level instead of the server level of Exchange 2007 or earlier versions. The concept of storage group does not exist in exchange 2010. Now, each database has a log stream associated with the database. One disadvantage of CCR is that if one database of the active node fails, all the existing active databases on the clustered mailbox server will fail to the passive CCR node. If users on this node have a mailbox stored in their respective cluster mailbox server (CMS), they will be affected
· each DAG supports up to 16 members: compared with Exchange 2007, exchange 2010 can support more mailbox databases, users can add up to 16 mailbox servers to one DAG, and may save 16 mailbox database copies. As a result, the maximum number of mailbox databases supported by exchange 2010 enterprise edition has been raised from 50 to 100. However, the standard version still only supports up to five databases per mailbox server
· switch / fail over is faster than before: thanks to the improvement of exchange 2010 DAG, switch / fail over between mailbox database replicas is faster now. Compared with the minutes required to adopt CCR in exchange 2007, the current time is often less than 30 minutes. In addition, e to the fact that the outlook API client connects to the RPC client access service of the client access server, end users rarely notice the handoff or fail over
· there is no need to back up when there are more than three copies of the database: when a mailbox database has three or more copies, the program is designed to not need to be backed up by the user. That is to say, when logging in the DAG protected mailbox database in turn, it is no longer necessary to perform the backup operation
· support DAG members located in different active directory sites: unlike CCR cluster nodes, DAG member servers can be located in different active directory sites. However, it should be noted that mailbox servers protected by the same DAG cannot be placed in different domains of the active directory forest
· log transmission through TCP: in exchange 2007, Microsoft Exchange replication service copies log files to passive database replica (LCR), passive cluster node (CCR) or SCR target through server message block, which means that users need to open port 445 of firewall between CCR cluster node (usually when deploying multi site CCR cluster) and SCR source or SCR target. With exchange 2010 DAG, asynchronous replication technology no longer relies on server management block. Exchange 2010 uses TCP / IP protocol to and seed log files. When a passive node is installed in a CCR environment, each storage group and its database will be copied from the active node to the passive node (this operation is called seeding), and even the port can be specified for log file replication. By default, DAG uses port 64327. Of course, other ports can be specified
· log file compression: with exchange 2010 DAG, the compression function can be enabled when seeding or ing between one or more networks in a DAG. This is the characteristic of DAG itself, not the characteristic of DAG network. The default setting is intersubnetonly, and the same value is used when setting network encryption properties
· log file encryption: exchange 2010 DAG adds support for encryption. In exchange 2007, log files will be copied through a non encrypted channel unless IPSec is configured. Specifically, DAG uses the encryption function of Windows Server 2008, that is, DAG uses Kerberos authentication between members of each mailbox server. Network encryption is for DAG itself, not for DAG network. Dag network encryption property options are: disable (do not use network encryption), enable (network encryption is used for seeding and replication of all networks in DAG), intersubnetonly (default setting, network encryption is used for DAG networks in the same subnet), and seedonly (network encryption is used for seeding of all networks in DAG)
· replication can be delayed for up to 14 days: standby continuous replication of Exchange 2007 SP1 introces the concept of delayed database replication. With this feature, users can specify how long the Microsoft Exchange replication service should wait before replaying log files that have been copied to SCR target computers. You can also use another parameter, truncation lag time, to specify how long the Microsoft Exchange replication service should wait before truncating log files that have been replicated to the SCR target computer and replayed to the database replica. With these two options, we can specify a time gap of up to seven days. With exchange 2010 DAG, users can specify a truncation latency of up to 14 days
· seeding from database replica: different from CCR in exchange 2007, users can now perform seeding by specifying a database replica as the source database. This means that seeding or replaying an existing mailbox database no longer affects the active database
· public folder database is not protected by DAG: different from CCR of Exchange 2007, users can not use DAG to protect public folder database, but must use the traditional replication mechanism of public folder to protect it. However, some improvements have been made in this aspect: if public folders are stored on DAG member servers, the restriction of only one public folder store in the exchange organization is removed
· improved transport Dumper: the transport mper is also improved, even when the damaged database fails over between database copies located in different active directory sites, the information can be re delivered. In addition, when all information is copied to the database replica, it is removed from the transport mper
bus line: Metro Line 3 → Metro Line 8, the whole journey is about 7.2km
1. Take Metro Line 3 from TIYU West Road, pass 3 stops, and then arrive at Kecun station
< P > 2. Take Metro Line 8, pass 2 stops, and then arrive at Zhongda station3. Walk about 260m to Zhongshan University (South Campus)
double m.2 3000 read speed solid state (Samsung 960 Evo nvme m.2 (500GB)) RAID 0 array,
but the motherboard needs at least H or Z series to support array, rtx-ray is useless, and there are too few games to support
today's games are always hundreds of gigabytes. Without high-speed solid-state disk array, it has a great impact on the game and seriously slows down the speed.
propensity to consume refers to the proportion of consumption expenditure in income, which can be divided into average propensity to comsum (APC) and marginal propensity to consume (MPC). Average propensity to consume refers to the proportion of total consumption in total income, while marginal propensity to consume refers to the proportion of incremental consumption in incremental income. Suppose that people's income and expenditure are savings except for consumption, then the corresponding consumption tendency is savings tendency. In general, the direction of consumption tendency is consistent with the change of money demand, that is, the consumption tendency is large and the money demand is large; And vice versa< (3) interest rate level
in the market economy, interest rate is an important lever to regulate economic activities. Under normal circumstances, the interest rate rises and the money demand decreases; The interest rate decreases while the money demand increases, and there is a negative correlation between the interest rate and the money demand. The reasons for the negative correlation between interest rate and money demand are as follows: first, the increase of interest rate in money market means that the opportunity cost of holding money increases (the interest income given up because of holding money), so the money demand tends to decrease; On the contrary, the market interest rate decreases, the opportunity cost of holding money decreases, and the money demand tends to increase. Second, the market interest rate changes inversely with the price of the securities, the interest rate rises and the price of the securities falls; When the interest rate falls, the price of securities rises. Thus, the public's desire to hold money is inversely proportional to the interest rate and directly proportional to the price of securities. The public's desire to hold money is an important factor determining the demand for money< (4) the degree of credit development
If a society has developed credit and sound credit system, and people can easily obtain cash or loans when they need money, then the amount of money necessary for the whole society is less than that for a society with underdeveloped credit and imperfect credit system< (5) the influence of the speed of money circulation, the supply of social goods and the price level on money demand can be explained by the law of money circulation. If M is the money demand, P is the price level, q is the social commodity supply, and V is the speed of money circulation, then according to the law of money circulation, there is the following formula: M = PQ / v. It can be seen that the price level and the supply of social goods are directly proportional to the money demand; The speed of money circulation is inversely proportional to money demand< (6) the expectation and preference of the public
the above five points are the objective factors that determine the money demand. Money demand is affected by people's subjective will and psychological activities to a certain extent. Generally speaking, the relationship between people's psychological activities and money demand is as follows:
1 when the interest rate rises greatly, people often expect that the interest rate will fall and the price of securities will rise, so people will rece their holding of cash and increase their holding of securities in order to obtain capital premium income in the future; And vice versa
2 if the price level is expected to rise, the money demand will decrease; If the price level is expected to decline, the money demand will increase
3 if people prefer money, the money demand will increase; if people prefer other financial assets, the money demand will decrease.
preschool ecation is not only the first stage of children's academic career, but also the first ecation stage of their life. The most important thing of pre-school ecation in school is to make children develop healthily both physically and mentally, and prepare for the transition from kindergarten to primary school. As parents, what we should do is to actively cooperate with school ecation and give children a space to give full play to themselves. As a school, what we should do is to cultivate children's intelligence, even emotional intelligence and aesthetic feeling.