Controller Settings for Nytro Cache Drive Current Write Policy Write Policy: Write Back and Write Through, RAID 1 (optimum controller settings (default))/Write Back and Write Through, RAID 0. A virtual drive property that indicates whether the virtual drive currently supports Write Back mode or Write Through mode. In Write Back mode, the controller sends a data transfer completion signal to the host when the controller cache has received all of the data in a transaction. In Write Through mode, the controller sends a data transfer completion signal to the host when the drive subsystem has received all of the data in a transaction. Nytro Write Back Caching RAID 1 Write Back caching: Delivers high application performance acceleration for write-intensive random I/O workloads (mirroring of Flash and losing half the total Flash capacity). Nytro Write Through Caching RAID 0 and RAID 1 Write Through caching: Delivers high application performance acceleration for read-intensive random I/O workloads. In RAID 1 Write Through caching, the application does not receive confirmation of the write completing until the HDD is written. Elastic Cache Elastic cache is another protection in the MegaRAID Storage Manager application as Host Write-Only Mirror (HWOM). Host writes: Host-write cached with RAID 1 protection at the cache are host reads. Host reads: Host reads do not have RAID protection in the cache level. NOTE Elastic cache is another protection in the MegaRAID Storage Manager application as Host Write-Only Mirror (HWOM).
Controller Settings for Nytro Cache Drive
Current Write Policy
Write Policy: Write Back and Write Through, RAID 1 (optimum controller settings (default))/Write Back and Write Through, RAID 0.
A virtual drive property that indicates whether the virtual drive currently supports Write Back mode or Write Through mode.
In Write Back mode, the controller sends a data transfer completion signal to the host when the controller cache has received all of the data in a transaction.
In Write Through mode, the controller sends a data transfer completion signal to the host when the drive subsystem has received all of the data in a transaction.
Nytro Write Back Caching
RAID 1 Write Back caching: Delivers high application performance acceleration for write-intensive random I/O workloads (mirroring of Flash and losing half the total Flash capacity).
Nytro Write Through Caching
RAID 0 and RAID 1 Write Through caching: Delivers high application performance acceleration for read-intensive random I/O workloads. In RAID 1 Write Through caching, the application does not receive confirmation of the write completing until the HDD is written.
Elastic Cache
Elastic cache is another protection in the MegaRAID Storage Manager application as Host Write-Only Mirror (HWOM).
Host writes: Host-write cached with RAID 1 protection at the cache are host reads.
Host reads: Host reads do not have RAID protection in the cache level.
NOTE Elastic cache is another protection in the MegaRAID Storage Manager application as Host Write-Only Mirror (HWOM).