HP HF20 disk array vs HP HF40 disk array

Comparison of HF20, HF40

19 specifications	A HP HF20 disk array Model HF20 View product	B HP HF40 disk array Model HF40 View product
Storageidentical
Storage drives installed	Yes	Yes
Installed storage drive type	HDD+SSD	HDD+SSD
Number of storage drives installed	27	27
Total installed storage capacity	137.52 TB	137.52 TB
Supported storage drive types	HDD & SSD	HDD & SSD
Number of storage drives supported	27	27
Storage drive interface	Serial Attached SCSI (SAS)	Serial Attached SCSI (SAS)
Supported storage drive interfaces	SAS	SAS
Ports & interfacesidentical
USB connectivity	No	No
Fibre Channel	Yes	Yes
Designidentical
Chassis type	Rack (4U)	Rack (4U)
Product colour	Green, Silver	Green, Silver
LED indicators	Yes	Yes
System requirementsidentical
Other operating systems supported	Yes	Yes
Server operating systems supported	SUSE Linux Enterprise Server	SUSE Linux Enterprise Server
Weight & dimensionsidentical
Width	439 mm	439 mm
Depth	890 mm	890 mm
Height	175.8 mm	175.8 mm
Weight	65 kg	65 kg

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.