Western Digital Red WDS400T2R0A 4 TB 2.5" Serial ATA III 3D NAND

Hard drive
SSD capacity	4 TB
Memory type	3D NAND
Data transmission
Read speed	560 MB/s
Write speed	520 MB/s
Random write (4KB)	83 IOPS
Random read (4KB)	87 IOPS
Features
Interface	Serial ATA III
Component for	NAS
NVMe	No
TBW rating	2500
SSD capacity	4 TB
Read speed	560 MB/s
Write speed	520 MB/s
Memory type	3D NAND
Random write (4KB)	83 IOPS
Random read (4KB)	87 IOPS
Certification	FCC, UL, TUV, KC, RCM, BSMI, VCCI, Morocco, CE, UKCA , CB-Scheme
SSD form factor	2.5"
Certificates
Certification	FCC, UL, TUV, KC, RCM, BSMI, VCCI, Morocco, CE, UKCA , CB-Scheme

Performance
Interface	Serial ATA III
Component for	NAS
NVMe	No
TBW rating	2500
SSD capacity	4 TB
Read speed	560 MB/s
Write speed	520 MB/s
Memory type	3D NAND
Random write (4KB)	83 IOPS
Random read (4KB)	87 IOPS
Design
Component for	NAS
Certification	FCC, UL, TUV, KC, RCM, BSMI, VCCI, Morocco, CE, UKCA , CB-Scheme
SSD form factor	2.5"
Weight & dimensions
Weight	1.22 oz (34.6 g)
Operational conditions
Operating temperature (T-T)	0 - 70 °C
Storage temperature (T-T)	-55 - 85 °C
Technical details
Interface	Serial ATA III
Operating temperature (T-T)	0 - 70 °C
Storage temperature (T-T)	-55 - 85 °C
SSD form factor	2.5"

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SKU	P19949-B21	MZ-77Q2T0B/AM	MZ-V8P2T0B/AM	P40503-B21	MZQL2960HCJR-00A07
Manufacturer	HPE	Samsung	Samsung	HPE	Samsung
Interface	Serial ATA	Serial ATA III	PCI Express 4.0	Serial ATA	PCI Express 4.0
Memory type	TLC	V-NAND MLC	V-NAND MLC	N/A	N/A
SSD capacity	800GB to 1000GB	1200GB to 2000GB	1200GB to 2000GB	800GB to 1000GB	800GB to 1000GB
Component for	Server/workstation	PC/notebook	PC	Server/workstation	Server/workstation
SSD form factor	2.5"	2.5"	M.2	2.5"	U.2