Examples of using Cache tiering in English and their translations into German
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Cache tiering recognizes two types of pools.
Additional 4 GB of RAM if cache tiering is used.
The cache tiering agent performs two main functions.
Create the hot storage pool to be used for cache tiering.
Consider using cache tiering in the following cases.
Refer to Section 10.5,“Erasure Coded Pool and Cache Tiering” for more details.
Cache tiering may degrade the cluster performance for specific workloads.
If this OSD host willhost part of a cache pool used for cache tiering, allocate at least an additional 4 GB of RAM.
The cache tiering agent can flush or evict objects based on the total number of bytes or the total number of objects.
It also provides industry-leading storage functionality such as Unified Block and Object, Thin Provisioning,Erasure Coding, and Cache Tiering.
When a Ceph client needs data that resides in the storage tier, the cache tiering agent migrates the data to the cache tier on read, then it is sent to the Ceph client.
It also includes advanced topics, for example how to manage users and authentication in general, how to manage pool and RADOS device snapshots, how to set up erasure coded pools,or how to increase the cluster performance with cache tiering.
Possibly low performance: For workloads that are not suitable for cache tiering, performance is often slower than a normal replicated pool without cache tiering enabled.
A cache tier is an additional storage layer implemented between the client and the standard storage.
In write-back mode, Ceph clients write data to the cache tier and receive an ACK from the cache tier.
When using FileStore, you cannotaccess erasure coded pools with the RBD interface unless you have a cache tier configured.
This includes the so-called cache tier: frequently used objects are automatically held in a special cache and can thus be accessed at lightning speed.
The FAST(Fast Automated Storage Tiering)-Cache of EMC is an additional function for the optimisation of server performance.
With the FAST(Fast Automated Storage Tiering)-Cache offered by EMC, active data are automatically stored on a performant storage level while inactive data are transferred to cost-effective storage levels with much capacity.
Intelligent caching and tiering.
Accelerate your performance with a wide range of processors, RAM, and connectivity options,as well as SSD support for caching and tiering.
Not only does QNAP offer NAS models equipped with powerful CPUs, but it also provides the ability to create multiple RAID groups andalso implement caching and tiering(Qtier*) technology allowing you to create an HDD/SSD hybrid storage solution to facilitate massive storage capacity, groundbreaking performance, and budget conscious spending.
They were designed to deliver consistent level of performance and reliabilityfor the most demanding data center applications, including database, Tier 1 Caching, Virtualization and Cloud Computing.