The FA-300 series offers both 8Gbps Fibre Channel and iSCSI protocol ports for connectivity. The model 310 comes with four ports; the model 320 with 8 ports.
The FA-310 uses a maximum of 650 watts of power and the FA-310 peaks at 1,300 watts. The FlashArray product also comes with fully redundant power and cooling supplies and call-home remote support.
The Pure Storage FlashArray is powered by processors with 12 CPU cores, allowing it to offload deduplication and compression workloads from the I/O stream. The array performs with less than one millisecond average latency with deduplication turned on.
Pure Storage claims that by using data reduction algorithms to remove 70 to 90 percent of the write I/Os from the data path, the array's write performance also improves because of increased bandwidth. The deduplication algorithm also does not rely on hashing to validate duplicate data. All data on the Pure Storage FlashArray is compared byte-for-byte before being deduplicated because NAND flash excels at reads.
By using read comparisons to deduplicate data, the array avoids the risk of hash collisions, which can occur when two pieces of data have the same hash value. Hash collisions can result in data loss.
Purity's data reduction is carried out throughout the entire array, working down to 512-byte segments, which is what gives it the 10-fold data reduction over approaches that stop at 4kb segments.
While Samsung's SSDs use error correction logic on their controllers to ensure data integrity, Pure Storage's Purity software provides an additional level of validation as all data is also check-summed as it enters the FlashArray. The checksum is validated at every layer of the architecture as data is processed and before being returned as part of a read request.
Lucas Mearian covers storage, disaster recovery and business continuity, financial services infrastructure and health care IT for Computerworld. Follow Lucas on Twitter at @lucasmearian or subscribe to Lucas's RSS feed. His email address is firstname.lastname@example.org. Read more about storage in Computerworld's Storage Topic Center.