| Characteristics | |||
|---|---|---|---|
| Part number | 1746A2S DS3512 Express Single Controller Storage System 1746A2D DS3512 Express Dual Controller Storage System 1746A4S DS3524 Express Single Controller Storage System 1746A4D DS3524 Express Dual Controller Storage System 1746T4D DS3524 Express DC Dual Controller Storage System |
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| RAID controller | Dual active, hot-swappable controllers | ||
| Cache | 1 gigabyte (GB) cache per controller with 2 GB upgrade (battery-backed) | ||
| Host interface | Four options:
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| Drive interface | Two 6 Gb SAS drive ports | ||
| Supported drives | 6 Gbps SAS 3.5 in. drives:
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| RAID levels | 0, 1, 3, 5, 6, 10 | ||
| Storage partitions | Support for up to 128 storage partitions (levels: 4 standard with upgrades to 8, 16, 32, 64 and 128) | ||
| Maximum drives supported |
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| Fans and power supplies | Dual redundant, hot-swappable | ||
| Rack support | 2U, 19 in., industry-standard rack | ||
| Management software | IBM System Storage DS Storage Manager | ||
| SAN support | Supported IBM Fibre Channel switches and directors, and IP switches | ||
| Warranty | Three-year parts and labor warranty, 9x5 next business day, upgradable to 24x7 with four-hour response | ||
| Physical characteristics | |||
| Dimensions | DS3512: Height: 3.39 in./86.16 mm, Width: 18.99 in./482.47 mm, Depth: 21.72 in./551.60 mm DS3524: Height: 3.47 in./88.07 mm, Width: 18.98 in./482.10 mm, Depth: 19.60 in./497.93 mm |
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| Supported systems | For a list of currently supported servers, operating systems, host bus adapters, clustering applications and SAN switches and directors, refer to the DS3500 Express Interoperability Matrix. | ||
| Model | Model description | Interface | Model includes |
| 1746-E2A/EXP3512 1746-E4A/EXP3524 |
Drive enclosure | 6 Gb SAS | External security manager-embedded |
| Relative humidity (no condensation) | EXP3512/EXP3524 drive enclosure | ||
| Operating range | 20% to 80% | ||
| Storage range | 10% to 90% | ||
| Maximum dew point | 79°F (26°C) | ||
| Maximum gradient | 10% per hour | ||
| Altitude ranges | |||
| Operating | 100 ft. (30.5 m) below sea level to 10,000 ft. (3048 m) above sea level | ||
| Storage | 100 ft. (30.5 m) below sea level to 10,000 ft. (3048 m) above sea level | ||
| Transit | 100 ft. (30.5 m) below sea level to 40,000 ft. (12,000 m) above sea level | ||
| The tabulated power and heat dissipation values are the maximum measured operating power. | |||
| Acoustic noise | EXP3512/EXP3524 drive enclosure | ||
| Sound power | 6.5 bel | ||
| Sound pressure | 65 dBA | ||
| Power input | EXP3512/EXP3524 drive enclosure | ||
| Nominal voltage range | 90 V ac to 264 V ac | ||
| Frequency range | 50 to 60 Hz | ||
| Maximum operating current | 3.90 A at 115 V ac 2.06 A at 230 V ac |
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* Limitation: Maximum of 20 SSDs per system (a system is defined as the DS3500 Express storage controller and all attached EXP3524 expansion units)
