In Oracle ZFS appliance there are two kind of disk HDD (Normal disk) and SSD (Faster I/O disk compared to HDD),
If In oracle public cloud volume is created with
logbias = throughput : data will be directly written to HDD synchronously.
logbias =latency: data will be first written to SSD (faster disk) and later will be moved to HDD in background .
Why do we need this setting and how it is useful
SSD disk are costlier compared to HDD , therefore SSD can be used in such case where we need high throughput specially Write throughput . To optimizing cost/performance we need to have a setting to use both kind of disk
If In oracle public cloud volume is created with
logbias = throughput : data will be directly written to HDD synchronously.
logbias =latency: data will be first written to SSD (faster disk) and later will be moved to HDD in background .
Why do we need this setting and how it is useful
SSD disk are costlier compared to HDD , therefore SSD can be used in such case where we need high throughput specially Write throughput . To optimizing cost/performance we need to have a setting to use both kind of disk
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