New High-End Flash Storage System — DS8880F
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With the announcement of 10 January (htt
which each are based on the second generation of the "High-Performance Flash Enclosure" (HPFE Gen-2).
HPFE is a dedicated flash architecture with all-Custom Flash Hardware (CFH), which is specifically designed for the high IOps counts that take place when using flash. HPFE Gen-2 comes in paired enclosures of up to 48 flash cards, which as special hardware have the so-called "Microbays" in the rear.
Each Microbay, among other components, contains
All pathing is redundant. The HPFE Microbays are directly attached to the I/O enclosures by using the PCIe bus fabric, which increases bandwidth and tran
Flash cards for HPFE Gen-2 are available in capacities of 400 GB, 800 GB, 1.6 TB and 3.2 TB. The biggest model DS8888F can hold up to 384 flash cards today (=currently up to 1.23 PB raw), with further capacity increases expected.
At the same time, DS8880 remains to be offered as hybrid machine in a mix with HDDs (2-tier, or 3-tier), or as full-SSD machine with up to 1536 SSDs, which makes DS8880 to one of the most versatile systems in terms of scaling.
SPC-1 v3 Benchmark
The DS8888 (model 982), which is the predecessor model of the new DS8888F (model 988) and which was based on HPFE Gen-1, has a submitted cross-vendor SPC-1 v3 benchmark result of 1,500,187 SPC-1 IOPS, combined with a SPC-1 Overall Response Time of 0.336 ms:
These are record results, especially for a FICON-capable storage system delivering mainframe reliability.
With DS8888F, internal measurements have shown up to 2.5 million IOps in typical OLTP environments.
Another bigger change with the new DS8880 models (984, 985, 986, 988) is the recommendation for a RAID-6 default, alternatively to RAID-10, but instead of RAID-5. This includes the HPFE flash cards. RAID-6 comes with 2 parity drives in a RAID array. Our RAID-5 already has additional means of protection ("Smart Rebuild") compared to RAID-5 implementations of other vendors. But with drive capacities and hence also rebuild times ever increasing, over the years and in a relative comparison the drives have become a component that should be treated with highest redundancy, in order to achieve a maximum reliability. And this is true for all storage vendors. Hence when configuring the DS8880 e.g. in the GUI in an automated fashion, RAID-6 is suggested.
DS8880F models are generally available starting 20 January.
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