scaling and high availability architectures

... going to do what and when, knowing the interdependencies, accessing the plan, and making sure in advance the plan contains what it should Chapter 4: High Availability High availability is something ... good argument for piloting and prototyping, but the real full-scale system still has to go live and set sail someday High Availability: The Watertight Compartments High availability is the IT terminology ... high availability and disaster recovery practices is establishing who is accountable for what SharePoint ownership is fundamentally a collaborative process Creating good high availability and...

Ngày tải lên: 01/08/2014, 16:03

... These services provide the standard and direct input and output to and from objects, as well as other operations on objects themselves, such as create, delete, and truncate operations • Management ... well as completely new storage interfaces and products Novell Cluster Services v1.6 is a server-clustering system you can use to ensure high availability and manageability of critical network resources, ... providing significantly higher levels of efficiency The NSS Object Engine uses sophisticated and highly efficient mechanisms to manage the objects it stores, achieving high levels of performance,...

Ngày tải lên: 09/12/2013, 17:15

... Availability Features,Architectures, and Policies This part highlights Oracle Database high availability features and describes architectures that use Oracle high availability features and products It ... overview of high availability (HA) and describes the Oracle features that can be used to achieve high availability Chapter 1, "Overview of High Availability" This chapter defines high availability ... ■ High Availability Best Practices Cost of Downtime, RTO, RPO, SLA Business Impact Analysis High Availability Best Practices High Availability Systems Capabilities Budget and Growth Plans A Highly...

Ngày tải lên: 10/12/2013, 13:15

... relating to Pinus tree improvement and mass propagation systems via training in Queensland and Vietnam, development of small-scale hedge and nursery infrastructure, and a study tour to Australia, ... performance of locally available and introduced pines (especially Pinus caribaea and hybrids) on multiple sites throughout North Central, Central Coast and Central Highlands regions of Vietnam PROGRESS ... select) Queensland X X X X X X 6 PCH (select) Queensland 15m 7 PCH - FRC source X X X X X X 8 PEE x PCH F2 (Queensland) 9 PCH x PCB (Queensland) C3640 X X X X X X 10 PCH x PCC (Queensland) 11 PEE...

Ngày tải lên: 21/06/2014, 06:20

... and Forestry Plantations Queensland GYMPIE – Queensland 4570, Australia Trang 2Institution Informationmass-propagation technology for scaling up high-value plantations of Pinus caribaea and ... relating to Pinus tree improvement and mass propagation systems via training in Queensland (Qld) and Vietnam, development of small scale hedge and nursery infrastructure, and a study tour to Australia, ... Ba Vi (Ha Tay) and Dalat (Lam Dong) in May’07 This involved practical and theoretical training in nursery design and hygiene, potting mix preparation and testing, hedge layout and management,...

Ngày tải lên: 21/06/2014, 06:20

... improvement and mass propagation systems via training in Queensland and Vietnam, development of small-scale hedge and nursery infrastructure, and a study tour to Australia, involving forest managers and ... evaluation and advanced vegetative mass-propagation technology for scaling up high-value plantations of Pinus caribaea and related hybrids in Vietnam Milestone 7: Output 2.3: Hedge and containerised ... significant mortality The hot and humid weather during the peak of summer may be a high risk period for attack by pests and diseases, and the chances of fungal attack are probably high shortly after shoot...

Ngày tải lên: 21/06/2014, 06:20

... training in Queensland and Vietnam and the esdtablishment and operation of three pilot hedge and nursery facilities; and 3 The Project will provide ongoing awareness to large and small scale forest ... strategy and tree improvement more generally A network of 8 genetic trials was established in the North, Central Coast and Central Highlands bio-geographic regions of Vietnam comparing “standard” and ... relating to Pinus tree improvement and mass propagation systems via training in Queensland (Qld) and Vietnam, development of small scale hedge and nursery infrastructure, and a study tour to Australia,...

Ngày tải lên: 21/06/2014, 06:20

... AlwaysOn is a new integrated, flexible, cost‐efficient high availability and disaster recovery solution.It can provide data and hardware redundancy within and across datacenters, and improvesapplication failover time to increase the availability of your mission‐critical applications.AlwaysOn provides flexibility  ... 6You can make the best selection of a database technology for a high availability and disaster recovery solution when all stakeholders have a shared understanding of the related business drivers, challenges, and objectives of planning, managing, and measuring RTO and RPO objectives.  ... indirectly by this book Trang 5High Availability and Disaster Recovery Concepts   1  Describing High Availability   1  Planned vs. Unplanned Downtime   1  Degraded Availability   2  Quantifying Downtime ...

Ngày tải lên: 20/10/2014, 14:19

... DESIGNING AND MANAGING HIGH AVAILABILITY IP NETWORKS L1 through L7 Trang 2INTRODUCTION AND DEFINITIONS3 © 2004 Cisco Systems, Inc All rights reserved. NMS-2T20 9592_04_2004_c1 causes, and improvements ... Downtime per Year (24x7x365) Availability What Is “High Availability”? objectives” across services and/or technologies supported in (i.e 99.9%, 99.99%, 99.999%) Availability Definitions Useful ... Availability • Identify and resolve process deficiencies • Start an availability improvement quality process • Root-cause analysis • Collect and report availability metrics Process Tools • Availability...

Ngày tải lên: 27/10/2019, 21:52

... rows affected (0.00 sec) Conclusion High availability is a nontrivial concept to implement in practice In this chapter, wepresented a look into high availability and how you can achieve it with MySQL ... increase—you can handle it in two ways The first is to buy larger and more powerful servers to handle the increased load, which is called scaling up, whereas the second is to add more servers to handle the ... server to handle data filtering This is also useful when thedata needs to be partitioned and reside on separate servers Scaling Out Reads, Not Writes It is important to understand that scaling out...

Ngày tải lên: 17/10/2013, 22:15

... load-interval 30 standby 1 ip 10.120.20.1 standby 1 timers msec 250 msec 800 standby 1 priority 150 standby 1 preempt delay minimum 180 << Configure 3 minute delay standby 1 authentication ... 5Introduction Both small and large enterprise campuses require a highly available and secure, intelligent network infrastructure to support business solutions such as voice, video, wireless, and mission-critical ... Understanding how the system recovers from component outages (planned and failures) and what the expected behavior is during such an outage is a critical step in designing, upgrading, and operating...

Ngày tải lên: 18/10/2013, 18:15

... explicitly using the START SLAVE command and stopthem explicitly with the STOP SLAVE command These commands control the slavethreads and can be used to stop and start the I/O thread or SQL thread ... functions commit_and_sync and start_trans together withthe three support functions, fetch_master_pos, wait_for_pos, and sync_with_master The commit_and_sync function commits a transaction and waits ... handled Example 5-16 Using the start_trans and commit_and_sync functions require_once './database.inc'; start_trans($master); $master->query('INSERT INTO t1 SELECT 2*a FROM t1'); commit_and_sync($master,...

Ngày tải lên: 20/10/2013, 17:15

... other hand, is comparably new and can po-tentially be harder to fix when replication fails • If data is different on master and slave, executing statements can yield differentresults on master and ... replication handles this differently and therefore requires multi-ple events for each statement To handle row-based replication, four new events have been introduced: Write_rows, Delete_rows, and Update_rows ... updates and deletes speeds up replication significantly for statement-based replication as well. Events and Triggers The execution of events and triggers differs in statement-based replication and...

Ngày tải lên: 20/10/2013, 17:15

... variables and values This is equivalent to the SQL SHOW VARIABLES command There are many options and other commands not listed here, including commands tostart and stop a slave during replication and ... govern and monitor behavior in the MySQLserver You use server variables to control behavior and status variables to read behaviorconfiguration and statistical information regarding features and ... discuss how and when to use these commands in the next section Performance Monitoring Performance monitoring in MySQL is the application of the previous commands—specifically, setting and reading...

Ngày tải lên: 24/10/2013, 15:15

... mand could not be run and that the command will instead re-create the table and runthe ANALYZE TABLE command The second row is the result of the ANALYZE TABLE step.Like the ANALYZE TABLE command ... OPTIMIZE TABLE command to recover deleted blocks and reorganize the tablefor better performance You can use this command for MyISAM, BDB, and InnoDBtables While these commands are useful, there ... Specifically, use ANA LYZE and OPTIMIZE when it makes sense and not as a regular, scheduled event We haveencountered administrators who run these commands nightly, and in some cases thatmay be...

Ngày tải lên: 24/10/2013, 15:15

... while FLUSH, REPAIR TABLE, and similar maintenance com-mands are not Whenever this happens, consult the limitations of data manipulation(DML) commands and maintenance commands This problem is typically ... STATUS and SHOW SLAVE STATUS These SQL commands are your primary tool for diagnosing replication problems.Along with the SHOW PROCESSLIST command, you should execute these commands on the master and ... ssl-cert, and ssl-key) or the related options in the CHANGE MASTER com-mand (e.g., MASTER_SSL_CA, MASTER_SSL_CAPATH, MASTER_SSL_CERT, and MASTER_SSL_KEY) Be sure to check your settings and paths...

Ngày tải lên: 28/10/2013, 22:15

... InnoDB and XtraDB, but can also back up and restoreMyISAM tables It provides many of the features expected of backup solutions, in-cluding compression and incremental backup You can download and ... experimenting with LVM andmaking backups of your data There are several useful commands that you should become familiar with The ing list contains the most frequently used commands and their uses Be ... MySQL replication In previous chapters, youlearned about MySQL replication and its many uses for scale-out and high availability In this chapter, we examine two more common uses for MySQL replication...

Ngày tải lên: 28/10/2013, 22:15

... open and walked over to his desk When he turned toface his visitor, he knew who it was “Mr Summerson Good morning, sir.” “Good morning, Joel Nice work on that report about high availability and ... of new servers in a high availability setup Of course,they’ll be using MySQL for the database component.” Joel tried to remember all the details he’d read about MySQL high availability, dering ... much stronger fiscal burden and lookfor the most affordable services and tools to increase their customer bases by expandingtheir product lines while reducing costs and increasing profits It is...

Ngày tải lên: 07/11/2013, 19:15

... coordinator and the local query handler. The transaction coordinator handles distributed transactions and other data operations on a global level The local query handler manages data and transactions ... SHUTDOWN command in the NDB management console, it will shutdown all of your data nodes and the NDB management daemon Achieving High Availability The main motivation for using high availability ... the redo log and to execute the requisite check-points Since writing the logs and checkpoints is sequential and few random accesspatterns are involved, MySQL Cluster can achieve higher write...

Ngày tải lên: 07/11/2013, 20:15

... 539–541high availability and, 547–556high performance and, 557–560log handling, 531 management node, 541NDB management console, 542online operations, 537 partitioning and, 536redundancy and, 530, ... servers, 160high availability achieving, 547–550backups and, 6contingency plans, 104, 106–107disaster recovery and, 418information integrity and, 412MyISAM storage engine and, 352node recovery and, ... 349queries and, 294, 299information assurance (see IA)information integrity backup and restore, 420–424data recovery and, 419defined, 410, 411–412disaster recovery and, 412, 413–419high availability and,...

Ngày tải lên: 07/11/2013, 20:15