Since 2014, Toshiba Electronics Europe GmbH has been a key storage partner of CERN who have 3,200 JBODs carrying 100,000 hard disk drives (HDD) providing 350 PB of storage, 10 PB of which is consumed each month from new data requiring analysis. The original system in 2014 made use of the MG03 4 TB capacity drives, server-grade storage designed for high reliability and optimized for highest capacity at the time.
By the time of the experiment “Run 2” at the end of 2015 it was clear that more capacity would be required. An upgrade to the MG04 series with 6 TB per drive saw each JBOD grow in capacity to 144 TB. But even this proved not to be enough. Thankfully Toshiba had been pushing capacities for HDD technology forward and, in 2018, CERN upgraded again to the MG07 series, selecting 12 TB drives.