Add your answer: Earn +20 pts Q: What is the difference between physical structure and logical structure of a disk? Write your answer... Submit Still have questions? Find more answers Ask your question Continue Learning about Physics What is the difference between logical database a...
The logical structure of a Compact Disc (CD) or a Digital Versatile Disc (DVD) involves various writing techniques and the logical organization of data within a file system. Writing to a CD or DVD can be done using any of the following writing strategies. Track-at-once is the most common...
A storage system permits virtual storage of user data by implementing a logical disk mapping structure that provides access to user data stored on physical storage media and methods for generating point-in-time copies, or snapshots, of l... CE Lubbers,JM Reiser,A Korgaonkar,... - US 被引...
Logical replication, on the other hand, works at a higher level of abstraction. It replicates changes by understanding the logical structure of the data, which allows for more flexibility in terms of what is replicated and how it is consumed on the standby server...
Disk /dev/sda: 250.1 GB, 250059350016 bytes //这个硬盘有250.1 GB的容量 255 heads, 63 sectors/track, 30401 cylinders, total 488397168 sectors //255个磁头;63个扇区每磁道,30401个磁柱 Units = sectors of 1 * 512 = 512 bytes //每个 cylinder(磁柱)的容量是512字节 ...
IP addresses are described as logical addresses because they are chosen so as to collect computers into logical groupings based on connectivity and the structure of networks. The IP address has a hierarchical format comprising network part and host part. This is vital so thatrouting algorithmscan ...
In contrast, an Oracle block is a logical storage structure whose size and structure are not known to the operating system. The following figure shows that operating system blocks may differ in size from data blocks. The database requests data in multiples of data blocks, not operating system...
Types of LUNs The underlying storage structure and logical unit type play a role in performance and reliability. Examples include the following: Mirrored LUN.Fault-tolerant LUN with identical copies on two physical drives for data redundancy and backup. ...
The shows structure is: /dev/sdb1and/dev/sdc1form a RAID 1/dev/md0 /dev/sdd1and/dev/sde1form a RAID 1/dev/md1 /dev/md0and/dev/md1form the Volume Group VG #1 The whole VG #1 forms the Logical Volume LV #1 4.7 GUI support ...
Method and apparatus for shadowing a hierarchical file system index structure to enable error recovery The method of the invention updates a tree arranged index for an hierarchical file system (HFS). The index includes at least one index value, i.e., an index page, that is logically positioned...