IBM System Storage DS3950 Express


Optimised data management requires storage solutions with high data availability, strong storage management capabilities and powerful performance features. IBM System Storage DS3950 Express is designed to provide lower total cost of ownership, high performance, robust functionality and unparalleled ease of use. As part of the IBM DS series, DS3950 Express offers:

Common features Hardware summary
Feature Benefits
Host interface intermix
Balanced performance
Up to 112 intermixed drives
Built-in efficiencies
IBM System Storage DS Storage Manager software
Dynamic expansion capabilities
Up to 128 partitions
Fully-integrated replication features
Support for heterogeneous, open operating systems
Custom exclusive or (XOR) engine for RAID-parity calculations
Support for multiple RAID levels; including RAID 6
Redundant, hot-swappable components
Persistent cache backup
Up to four 8 Gbps FC host ports
Backward compatibility with 2 Gbps and 4 Gbps devices
Up to 112 FC drives
T10-PI data integrity
Dynamic capacity expansion
Dynamic volume expansion
Model 1814-94H and 1814-98H
RAID controller Dual active
Cache Model 94H: 2 GB
Model 98H: 4 GB
Host interface Model 94H: Four 8 Gbps FC
Model 98H: Four 8 Gbps FC and four 1 Gbps iSCSI
Drive interface 4 drive ports – FC Switched and FC Arbitrated Loop (FC-AL) standard, auto-sensing 2 Gbps/4 Gbps
Supported drives 4 Gbps FC: 300 GB, 450 GB and 600 GB 15k rpm
4 Gbps SATA: 1 TB and 2 TB 7.2k rpm
6 Gbps FC-SAS (2.5-inch): 300 GB, 600 GB and 900 GB 10k rpm
RAID levels 0, 1, 3, 5, 6, 10
Storage partitions 4, 8, 16, 32, 64 or 128
Maximum drives supported 112 FC, FC-SAS or SATA drives (using 6 EXP395 expansion units)
Fans and power supplies Dual redundant, hot-swappable
Rack support 19-in., industry-standard rack
Management software IBM System Storage DS Storage Manager version 10.xx
SAN support IBM FC switches and directors (product numbers 2005, 2006, 2109, 2026, 2027, 2031, 2032, 2034, 2042, 2054, 2061 and 2062, and IBM BladeCenter)
Warranty Three-year parts and labour warranty, 9:00 to 17:00 next business day, upgradeable to around-the-clock with six-hour response
Physical characteristics
Dimensions H - 130.3 mm (5.13 in.) W - 447.0 mm (17.6 in.) D - 563.8 mm (22.2 in.)
Supported systems For a list of currently supported servers, operating systems, host bus adapters, clustering applications and SAN switches and directors, refer to the DS3950 Express Interoperability Matrix.
DS3950 Express is supported only in rack installations. With optional features, up to six EXP395 expansion units can be attached to DS3950 Express allowing up to a maximum of 112 drives.
Model Model description Interface Model includes
1814-92H Drive enclosure 4 Gbps FC interface ESM-embedded
Relative humidity (no condensation) EXP395 Drive Enclosure
Operating range 8% – 80%
Storage range 5% – 80%
Maximum dew point 26°C (79°F)
Maximum gradient 10% per hour
Altitude ranges EXP395 Drive Enclosure
Operating 30.5 m (100 ft) below sea level to 3,000 m (9,842 ft) above sea level
Storage 30.5 m (100 ft) below sea level to 3,000 m (9,842 ft) above sea level
Transit 30.5 m (100 ft) below sea level to 12,000 m (40,000 ft) above sea level
Heat dissipation EXP395 Drive Enclosure
BTU/hr. 1,516
KVA 0.462
Watts (AC) 600
Amps (240 V ac) 2.25
The tabulated power and heat dissipation values are the maximum measured operating power.
Acoustic noise EXP395 Drive Enclosure
Sound power 6.5 bels
Sound pressure 67.5 dBA
Power input EXP395 Drive Enclosure
Nominal voltage range 100 – 240 V ac
Frequency range 50 – 60 Hz
Max operating current 5.4 A at 100 V ac
2.25 A at 240 V ac

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