ETERNUS DX900 S6

This section provides the storage system specification of the ETERNUS DX900 S6.

Table: Specifications (ETERNUS DX900 S6)
Item			ETERNUS DX900 S6
Physical capacity (max.) (*1)	NVMe SSDs		5,898TB
	SAS SSDs		69,304TB
	SAS disks		5,414TB
	Nearline SAS disks		20,304TB
Number of controller enclosures			1 to 2
Number of controllers			2 / 4
System memory capacity			256GB to 4,096GB (128GB to 1,024GB for each controller)
Extreme Cache Pool capacity (max.) (*2)			51.2TB (25.6TB for each controller enclosure)
Host interface			FC (64Gbit/s) FC (32Gbit/s) FC (16Gbit/s) iSCSI (10Gbit/s, 10GBASE-SR/10GBASE-CR)
Number of host interface adapters			2 – 16
Number of host interface ports	FC		4 – 64
Number of host interface ports	iSCSI		4 – 32
Number of drive enclosures (*3)	Number of drive enclosures		0 – 94 (*4)
	2.5" NVMe type drive enclosures		0 to 14 (*5)
	2.5" SAS type drive enclosures		0 – 94 (*4)
	3.5" SAS type drive enclosures		0 – 94 (*4)
Drive adapter interface (maximum transfer rate)			NVMe (16Gbit/s) SAS (12Gbit/s)
Number of drive adapters			0 – 8
Number of drive adapter ports	NVMe (16Gbit/s)		0 – 16
Number of drive adapter ports	SAS (12Gbit/s)		0 – 16
Number of drives (*6)			2 – 2,304
Drive capacity (rotational speed)	2.5" NVMe SSDs	Non-self-encrypting	1.92TB, 3.2TB (*7), 3.84TB, 7.68TB, 15.36TB
	2.5" NVMe SSDs	Self-encrypting	1.92TB, 3.2TB (*7), 3.84TB, 7.68TB, 15.36TB
	2.5" SAS SSDs	Non-self-encrypting	1.92TB, 3.84TB, 7.68TB, 15.36TB, 30.72TB
	2.5" SAS SSDs	Self-encrypting	1.92TB, 3.84TB, 7.68TB
	2.5" SAS disks	Non-self-encrypting	1.2TB, 2.4TB (10,000rpm)
	2.5" SAS disks	Self-encrypting	1.2TB (10,000rpm)
	3.5" Nearline SAS disks	Non-self-encrypting	4TB, 8TB, 12TB, 18TB (7,200rpm)
	3.5" Nearline SAS disks	Self-encrypting	8TB, 16TB (7,200rpm)

*1	:	Physical capacity is calculated based on the assumption that 1TB=1,000GB and 1GB=1,000MB. NVMe SSDs: {15.36TB × (24 drives/CE + 24 drives/DE × 7 DEs)} × 2 CEs = 5,898.24TB » 5,898TB SAS SSDs: (30.72TB × 24 drives/DE × 47 DEs) × 2 CEs = 69,304.32TB » 69,304TB SAS disks: (2.4TB × 24 disks/DE × 47 DEs) × 2 CEs = 5,414.4TB » 5,414TB Nearline SAS disks: (18TB × 12 disks/DE × 47 DEs) × 2 CEs = 20,304TB If the integer value of the calculated maximum physical capacity is three digits or more, it is rounded off to the ones place.
*2	:	Extreme Cache Pools use the NVMe SSDs (3.2TB) that are installed in the controller enclosures or NVMe type drive enclosures as the cache. Up to four drives can be installed for the Extreme Cache Pools per controller and the maximum capacity of the Extreme Cache Pools in each controller is 12.8TB.
*3	:	Different types of drive enclosures can be installed together in an ETERNUS DX. When different types of drive enclosures are installed together, the maximum number of installable drive enclosures depends on which drive enclosure type combinations are used.
*4	:	Up to 47 drive enclosures can be installed in each controller enclosure.
*5	:	Up to seven drive enclosures can be installed in each controller enclosure.
*6	:	The number of drives when a mix of NVMe SSDs and SAS drives are installed. The number of drives when only NVMe SSDs are installed is 2 to 384. The number of drives when only SAS drives are installed is 2 to 2,256.
*7	:	NVMe SSDs (3.2TB) can be used as drives for configuring Extreme Cache Pools.