Ultrastar NVMe™ enterprise SSDs continue to be the ideal solution for cloud and server providers who need performant, high-capacity, cost-optimized, read-intensive performance for their data-intensive applications. With dual-port redundancy and failover capability, end-to-end data protection and additional enterprise features, Ultrastar DC SN655 NVMe SSDs help ensure your data is secure and available when needed. With high-capacity, low-latency performance reaching up to 1.1M IOPs, storage providers are efficiently able to increase capacity for modern applications processing large unstructured datasets and are reducing time-to-insights of big data and enabling efficient machine learning. Ultrastar DC SN655 NVMe™ SSDs are now available with select Colfax systems
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Capacity1
3.84TB
7.68TB
15.36TB
30.72TB
61.44TB
Endurance2
1DWPD
Security
SE, ISE, TCG
Form Factor
U.3 15mm
Interface
PCIe Gen4, NVMe 1.4
Performance3
Read Throughput (max MB/, Seq 128KiB)
6,800MB/s
6,100MB/s
4,300MB/s
Write Throughput (max MB/, Seq 128KiB)
2,600MB/s
2,000MB/s
3,700MB/s
3,400MB/s
3,150MB/s
Read IOPS (max, Rnd 4KiB)
1000K
980K
1100K
1052K
890K
Write IOPS (max, Rnd 4KiB)
112K
80K
135K
66K
29K
Read Latency (µS)4
80
78
125
110
115
Write Latency (µS)4
10
15
40
Reliability
MTBF5 (hours, projected)
2.5M
Uncorrectable Bit Error Rate (UBER)
1 in 1017
Annualized Failure Rate5 (AFR, projected)
0.35%
Limited Warranty6 (years)
5
Power Management
Requirement (DC, +/- 10%)
+12v
Operating Modes (typical)
16W, 20W(Default)
Idle (Average)
<8W
Physical Size
z-height (mm)
15 mm
Dimensions (width x length)
69.85 x 100.45 mm
Environmental
Operating Temperature (Ambient)7
0°C to 70°C
Non-Operating Temperature8
-40°C to 85°C
1 One megabyte (MB) is equal to one million bytes, one gigabyte (GB) is equal to 1,000MB (one billion bytes), one terabyte (TB) is equal to 1,000GB (one trillion bytes), and one petabyte (PB) is equal to 1,000TB. Actual user capacity may be less due to operating environment. 2 Endurance rating based on DWPD using 4KiB 100% random write and JESD 219 workloads over 5 years. 3 Based on Western Digital internal testing. Performance will vary by capacity point, or with the changes in useable capacity. Consult product manual for further details. All performance measurements are in full sustained mode and are peak values. Subject to change. 4 Average random read latency at 4KiB, QD=1. 5 MTBF and AFR specifications will be based on a sample population and are estimated by statistical measurementsand acceleration algorithms under typical operating conditions for this drive model. MTBF and AFR ratings do not predict an individual drive’s reliability and do not constitute a warranty. 6 The warranty for the product will expire on the earlier of (i) the date when the flash media has reached one-percent (1%) of its remaining life or (ii) the expiration of 5 years. 7 Composite temperature reading. 8 Values are based on ambient temperature. Avoid non-operational exposure to temperatures in excess of 40°C for periods exceeding three months.
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