http://www.theregister.co.uk/2015/10/14/ibm_ds8880_array/
There are three models:
DS8884 entry-level system that saves on space and features easy-to-
use operations and continuous availability for running critical
workloads.
DS8886 mid-range array with double the DS88770 speed, six nines
availability and multi-site replication.
DS8888 high-end product with all-flash media and non-stop operations
The array can scale up from 3TB to just over 3PB2 and has a high-
performance flash enclosure (HPFE) module, with 400GB “ultra-fast
flash cards” for the highest data access speeds. We’re told storage
pool striping and flash drives can virtually eliminate disk “hot spots.”
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