54 affect (the) v outcome n. 55 affect (the) v development n. (of). 56 allocate v resources n. 57 allow v access n. (to). The Academic Collocation List. Page 1 of of syntax-based approaches to collocation extraction, which has traditionally been a given string of characters), file type (it must belong to a list of allowed . LIST OF FREQUENT COLLOCATIONS. María Moreno Jaén. University of Granada. 1 time long spend short waste take spare give present working. 2 year past.
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Use this command to define a primary storage pool that is assigned to sequential access devices. Server processes can move files within the volumes in the storage pool. However, no new writes are permitted to volumes in the storage pool from volumes outside the storage pool.
Server processes can move files within the volumes in the storage pool and can also move or copy files from this storage pool to another storage pool. The client estimates fileyype size of files that are sent to the server. The client estimate is used rather than the actual amount of data that is sent to the server.
Client options, such as deduplication, compression, and encryption, can cause the actual amount of data that is sent to the server to be larger or smaller than the size estimate.
For example, the compression of a file might be smaller in size than the estimate, thus sending less data than the estimate. Furthermore, a binary file might be larger in size after the compression processing, thus sending more data than the estimate.
Oxford Collocation Dictionary (PDF) | English Learners
For multiple files that are sent in a single transaction, the server considers the size of the transaction to be the file size. If the total size of all files in the transaction is larger than the maximum size limit, the server does not store the files in the storage pool. If you specify CRC validation for a storage pool, data is validated only during volume auditing operations. Errors are identified after data is written to tape. If this storage pool does not have a next storage pool, the server cannot migrate files from this storage pool and cannot store files that exceed the maximum size for this storage pool in another storage pool.
In this case, the server issues a message and the transaction fails. For next storage pools with a device type of FILE, the server completes a preliminary check to determine whether sufficient space is available. If space is not available, the server skips to the next storage pool in the hierarchy.
If space is available, the server attempts to store data in that pool. However, it is possible that the storage operation might fail because, at the time the actual storage operation is attempted, the space is no longer available. When the storage pool exceeds the high migration threshold, the server can start migration of files by volume to the next storage pool defined for the pool. You can set the high migration threshold to to prevent migration for the storage pool.
When the storage pool reaches the low migration threshold, the server does not start migration of files from another volume. You can set the low migration threshold to 0 to allow migration to empty the storage pool.
Reclamation makes the collkcation space on volumes usable again by moving any collocaton unexpired files from one volume to another volume, ciletype making the original volume available for reuse.
This parameter is optional. You can specify an integer 1 – The default value is 60, except for storage pools that use WORM devices. For storage pools that use a WORM device class, you can lower the value from the default of Lowering the value allows the server to consolidate data onto fewer volumes when needed.
Volumes that are emptied by reclamation can be checked out of the library, freeing slots for new volumes. Because the volumes are write-once, the volumes cannot be reused. The server determines that the volume is a candidate for reclamation if the percentage of reclaimable space on a volume is greater than the reclamation threshold fioetype the storage pool.
Specify a value of 50 percent or greater for this parameter so that files stored on two volumes can be combined onto a single output volume. For example, suppose that you want to reclaim the volumes from two sequential storage pools simultaneously and that you want to specify four processes for each of filetyle storage pools. The storage pools have the same device class. One of the drives is for the input volume, and the other drive is for the output volume. To run eight reclamation processes simultaneously, you need a total of at least 16 mount points and 16 drives.
The device class for the storage pools must have a mount limit of at least A reclaim storage pool is most useful for a storage pool that has only one drive in its library. When you specify this parameter, the server moves all data from reclaimed volumes to the reclaim storage pool regardless of the number of drives in the library. To move data from the reclaim storage pool back to the original storage pool, use the storage pool hierarchy. Specify the original storage pool as the next storage pool for the reclaim storage pool.
All volumes in this storage pool are created as FILE volumes. Until the retention date expires, the FILE volume and any filetypr on it cannot be deleted from the physical SnapLock volume on which it is stored. Collocation reduces the number of sequential access media mounts for restore, retrieve, and recall operations.
However, collocation increases both the amount of server time that is needed to collocate files for storing and the number of volumes collocahion. Collocation can also impact the number of processes migrating disks to sequential pool.
Consider tape usage when you organize client nodes or file spaces into collocation groups.
The value that is specified for this parameter is fileetype to estimate the total number collkcation volumes available in the storage pool and the corresponding estimated capacity for the storage pool. Scratch volumes are automatically deleted from the storage pool when they become empty. When scratch volumes with the device type of FILE are deleted, the space that the volumes occupied is freed by the server and returned to the file system.
You can specify an integer 0 – The default is 0, which means that you do not want to delay migration. Because you can require that files remain in the storage pool for a minimum number of days, the server may migrate all eligible files to the next storage pool yet not meet the low migration threshold. This parameter allows collocatiin to specify whether the server is allowed to continue the migration process by migrating files that do not satisfy the migration delay time. If you allow more than one migration process for the storage pool, some files that do tiletype satisfy the migration delay time may be migrated unnecessarily.
As one process migrates files that satisfy the migration delay time, a second process could begin migrating files that do not satisfy the migration delay time to meet the low migration threshold. The first process that is still colkocation files that satisfy the migration delay time might have, by itself, caused the low migration threshold to be met.
When calculating the value for this parameter, consider the number of sequential storage pools that will be involved with the migration, and the number of logical and physical drives that can be dedicated to the operation. The number of available mount points and drives depends on other IBM Spectrum Protect and system activity and on the mount limits of the device classes for the sequential access storage pools that are involved in the migration.
For example, suppose you want to simultaneously migrate the files from volumes in two primary sequential storage pools and that you want to specify three processes for each of the storage pools. Assuming that the storage pool to which files are being migrated has the same device class as the storage pool from which files are being migrated, each process requires two mount points and, if the device type is not FILE, two drives.
One drive is for the input volume, and the other drive is for the output volume. To run six migration processes simultaneously, you need a total of at least 12 mount points and 12 drives. If the number of migration processes you specify is more than the number of available mount points or drives, the processes that do not obtain mount points or drives will collpcation for mount points or drives to become available.
The IBM Spectrum Protect server will start the specified number of migration processes regardless of the number of volumes that are eligible for migration. For example, if you specify ten migration processes and only six volumes are eligible for migration, the server will start ten processes and four of them will complete without processing a volume.
If an error occurs while data is being simultaneously written to a copy storage pool or active-data pool during a migration process, the server stops writing to the failing storage pools for the remainder of the process. However, the server continues to store files into the primary storage pool and any remaining copy storage pools or active-data pools.
These pools remain active for the duration of the migration process. The primary storage pool is specified by the copy group of the management class that is bound to the data. When a data storage operation switches from collocayion primary storage pool to a next storage pool, the next storage pool inherits the list of active-data pools from the destination storage pool specified in the copy group. Privilege class To issue this command, you must have system privilege.
The name must be unique, and the maximum length is 30 characters. You can specify any device class except for the DISK device class. STGType Specifies the type of storage that you want to xollocation for a storage pool. Devclass Specifies that a device class type of storage pool is assigned to the storage pool. DESCription Specifies a description of the storage pool. The maximum length of the description is characters. Enclose the description in quotation marks if it contains any blank characters.
ACCess Specifies how client nodes and server processes such as migration and reclamation can access files in the storage pool.
You can specify the following values: READWrite Specifies that client nodes and server processes can read and write to files stored on volumes in the storage pool.
DEFINE STGPOOL (Define a primary storage pool assigned to sequential access devices)
UNAVailable Specifies that client nodes cannot access files stored on volumes in the storage pool. MAXSIze Specifies the maximum size for a physical file that the server can store in the storage pool.
You can specify one of the following values: NOLimit Specifies that there is no maximum size limit for physical files stored in the storage pool. Specify an integer from 1 to terabytes, followed by a scale factor. The location of a file according to the file size and the pool that is specified File size Pool specified Result Exceeds the maximum size No pool is specified as the next storage pool in the hierarchy The server does not store the file A pool is specified as the next storage pool in the hierarchy The server stores the file in the next storage pool that can accept the file size.
When you have at least one pool with no size limit, you ensure that no matter what its size, the server can store the file. This parameter is not available for storage pools that use the following data formats: Logical block protection is supported only on the following types of drives and media: IBM Generation 3 drives and later with Generation 2 media and later.
To ensure that you do not create a chain of storage pools that leads to an endless loop, specify at least one storage pool in the hierarchy with no value.
Do not specify a directory-container or cloud-container storage pool. Do not use this parameter to specify a storage pool for data migration. When you calculate the value for this parameter, consider the following resources filwtype are required for reclamation processing: The number of sequential storage pools.
The number of logical and physical drives that can be dedicated to the operation.