Finally while some flash storage vendors recommend a 4k block size for both redo logs and the database itself to avoid block misalignment issues pure storage does not.
Pure storage ssd sizes.
Performance is completely independent of the block size.
We generated about 2 gigabytes of redo per minute.
In fact the majority of our customers arrays have weighted io sizes above 32kb rather than below 32kb.
Purity fa computes a hash value for each incoming sector and attempts to determine whether another sector with the same hash value is stored in the array.
The item to bear in mind is that an ssd based array with 8gb or 16gb hbas using fibre channel can achieve extraordinary bandwidth with sub millisecond latency.
Pure storage lab testing for our load test we ran the hammerora tpc c workload.
We used 20 logfile groups sized at 2 gigabytes first using 512 byte block size and then 4k block size.
Pure storage s array delivers about 6x lower iops per rack unit too.
Hybrid storage describes storage systems that are designed with a blend of flash based solid state disk and mechanical disk drives in an effort to provide high performance at an affordable price.
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The redo logs rolled roughly once a minute for all tests i e.
High performance inline deduplication operates on a 512 byte aligned variable block size range from 4 32k.
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Pure storage s flasharray is assembled from a series of 2u storage racks and controllers which provide a raw uncompressed mlc ssd storage density of just under 3tb per u which is 3x lower than vanilla fc san mlc ssds such as the ramsan 810 from texas memory systems.
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Flasharray is the first all flash 100 nvme shared accelerated storage designed for mainstream enterprise deployments.
When you zone this to a 4gb host there s a good chance that the host will cause back pressure unable to keep up forcing fame discards further down the path.
06 06 2016 flasharray nvme by pure storage legacy vendors offering retrofit all flash arrays afas have been at the forefront of supporting big ssds 1 92tb and 3 84tb ssds over the last couple of years and have now announced support for 15tb ssds an impressive 4x increase.
Since the pure storage flasharray is designed on a 512 byte geometry we never have block alignment issues.
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