18TB Ultrastar DC HC550 WUH721818AL5204, 7200 RPM, SAS 12Gb/s, 512e/4Kn, 512MB cache, SIE, 3.5" HDD
- SKU: 13473563
- Manufacturer: WESTERN DIGITAL
- MPN: 0F38353
- Availability: TEMPORARILY OUT OF STOCK
Price
$536.47
18TB Ultrastar DC HC550 WUH721818AL5204, 7200 RPM, SAS 12Gb/s, 512e/4Kn, 512MB cache, SIE, 3.5" HDD
Western Digital Ultrastar 18TB Data center decisions are driven by TCO. Higher capacity hard drives play a leading role in reducing TCO. An 18TB data center HDD provides 29% more capacity in the same form factor as a 14TB HDD. Higher capacity HDDs enable data centers to lower CapEx by reducing supporting hardware and system level costs when compared to lower capacity drives. Helium-sealed, low power, high reliability drives reduce energy and maintenance costs, contributing to OpEx savings. For example, a data center using 18TB HDDs vs. 14TB HDDs can require 22% fewer racks while consuming 21% less power per TB at idle, resulting in significant overall TCO reduction for data center environments** SINGLEPACK **
Western Digital Ultrastar 18TB Data center decisions are driven by TCO. Higher capacity hard drives play a leading role in reducing TCO. An 18TB data center HDD provides 29% more capacity in the same form factor as a 14TB HDD. Higher capacity HDDs enable data centers to lower CapEx by reducing supporting hardware and system level costs when compared to lower capacity drives. Helium-sealed, low power, high reliability drives reduce energy and maintenance costs, contributing to OpEx savings. For example, a data center using 18TB HDDs vs. 14TB HDDs can require 22% fewer racks while consuming 21% less power per TB at idle, resulting in significant overall TCO reduction for data center environments** SINGLEPACK **
| Model | WUH721818AL5204 |
| Configuration | |
| Interface | SAS 12Gb/s |
| Capacity | 18TB |
| Format: Sector size (bytes) |
4Kn: 4096, 4160, 4224 512e: 512, 520, 528 |
| Areal Density (Gbits/sq. in, max) | 1022 (18TB) |
| Performance | |
| Data buffer (MB) | 512 |
| Rotational speed (RPM) | 7200 |
| Latency average (ms) | 4.16 |
| Interface transfer rate (MB/s, max) | 1200 |
|
Sustained transfer rate (MB/s, max) / (MiB/s, max) |
269/257 (18TB) |
| Reliability | |
| Error rate (non-recoverable bits read) | 1 in 1015 |
| Load/Unload cycles (at 40°C) | 600,000 |
| Availability (hrs/day x days/wk) | 24x7 |
| MTBF (M hours, projected) | 2.5 |
|
Annualized Failure Rate (AFR, projected) |
0.35% |
| Workloads | Up to 550 TB/year |
| Limited warranty (yrs) | 5 |
| Acoustics | |
| Idle/Operating (Bels, typical) | 2.0/3.6 |
| Power | |
| Requirement | +5 VDC, +12VDC |
| Operating (W) | 8.8 |
| Idle (W) | 5.8 |
| Power consumption efficiency at idle (W/TB) | 0.32 |
| Physical Size | |
| z-height (mm) | 26.1 |
| Dimensions (width x depth, mm) | 101.6 (+/-0.25) x 147 |
| Weight (g, max) | 690 |
| Environmental (Operating) | |
| Ambient temperature | 5° to 60°C |
| Shock (half-sine wave, 2ms, G) | 50 |
| Vibration (G RMS, 5 to 500Hz) | 0.67 (XYZ) |
| Environmental (Non-operating) | |
| Ambient temperature | -40° to 70°C |
| Shock (half-sine wave, 2ms, G) | 250 (2ms) |
| Vibration (G RMS, 2 to 200Hz) | 1.04 (XYZ) |