Students are asked to create a 3D model of one of the major settings in the book.
Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. August Learn how and when to remove this template message ZFS compared to other file systems[ edit ] The management of stored data generally involves two aspects: The management of the individual devices and their presentation as a single device is distinct from the management of the files held on that apparent device.
ZFS is unusual, because unlike most other storage systems, it unifies both of these roles and acts as both the volume manager and the file system. Therefore, it has complete knowledge of both the physical disks and volumes including their condition and status, their logical arrangement into volumes, and also of all the files stored on them.
ZFS is designed to ensure subject to suitable hardware that data stored on disks cannot be lost due to physical errors or misprocessing by the hardware or operating systemor bit rot events and data corruption which may happen over time, and its complete control of the storage system is used to ensure that every step, whether related to file management or disk management, is verified, confirmed, corrected if needed, and optimized, in a way that storage controller cards and separate volume and file managers cannot achieve.
ZFS also includes a mechanism for snapshots and replicationincluding snapshot cloning ; the former is described by the FreeBSD documentation as one of its "most powerful features", having features that "even other file systems with snapshot functionality lack".
Snapshots can be rolled back "live" or previous file system states can be viewed, even on very large file systems, leading to savings in comparison to formal backup and restore processes.
Summary of key differentiating features[ edit ] Examples of features specific to ZFS include: Designed for long term storage of data, and indefinitely scaled datastore sizes with zero data loss, and high configurability. Hierarchical checksumming of all data and metadataensuring that the entire storage system can be verified on use, and confirmed to be correctly stored, or remedied if corrupt.
Checksums are stored with a block's parent blockrather than with the block itself. This contrasts with many file systems where checksums if held are stored with the data so that if the data is lost or corrupt, the checksum is also likely to be lost or incorrect.
Can store a user-specified number of copies of data or metadata, or selected types of data, to improve the ability to recover from data corruption of important files and structures. Automatic rollback of recent changes to the file system and data, in some circumstances, in the event of an error or inconsistency.
Automated and usually silent self-healing of data inconsistencies and write failure when detected, for all errors where the data is capable of reconstruction.
Data can be reconstructed using all of the following: The RAIDZ levels stripe data across only the disks required, for efficiency many RAID systems stripe indiscriminately across all devicesand checksumming allows rebuilding of inconsistent or corrupted data to be minimised to those blocks with defects; Native handling of tiered storage and caching devices, which is usually a volume related task.
Relevant tools are provided at a low level and require external scripts and software for utilization. Native data compression and deduplicationalthough the latter is largely handled in RAM and is memory hungry. For example, synchronous writes which are capable of slowing down the storage system can be converted to asynchronous writes by being written to a fast separate caching device, known as the SLOG sometimes called the ZIL — ZFS Intent Log.
Highly tunable — many internal parameters can be configured for optimal functionality. Can be used for high availability clusters and computing, although not fully designed for this use.A unit that explores the writing of the feature story in-depth and looks at the different types of feature stories — profiles, backgrounders, etc.
Students write a draft and a final paper as part of the unit. This lesson asks students to write a profile of a classmate, with a particular focus on a talent, interest, or passion of that classmate. As an introduction to the feature article, students compare the characteristics of a hard news story to those of a feature story.
This lesson asks students to write a profile of a classmate, with a particular focus on a talent, interest, or passion of that classmate. As an introduction to the feature article, students compare the characteristics of a hard news story to those of a feature story. A feature article is a creative article that deals with real events, issues, and trends.
However, unlike straight news articles, it places emphasis on the people involved rather than on the facts of the news. Writing a paper doesn't have to be boring!
Introduce your student to research and writing with this thorough but fun guide. This is a great organization sheet for her to keep in her binder, as it will help her through future assignments. Welcome to My Place for Teachers.
On this website you will find rich educational material to support primary and lower-secondary teachers using the My Place TV series in the classroom. Explore background information, aligned with the My Place stories, on events and people significant to Australia's history.
Download clips and stills from the TV series, as well as teaching activities and.
Bring the characteristics of a feature article to light for the class. Look at examples in magazines and pick out the characteristics of the text that grab attention. Also discuss how they can choose photographs and use a strong voice to. Explain how the article tries to "hook" your interest (examining the lead). 7. Examine the text feature and list any text features the author uses to help make the article more interesting or informative. Unit B Lesson Plans and Activity Pages The Art and Craft of Journalism 9 Lesson 1: Newspaper Messages 10 Lesson Feature Stories 95 Lesson Writing a Feature Story Lesson Sports Stories the way reporters find sources for and write their stories. These lessons are designed to.