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M-Series Professional Optical Libraries

Plasmon  M-Series Libraries are an ideal storage solution for data-intensive applications requiring nearline access speeds. MO Drives are multi-functional, providing the benefits of both rewritable and CCW WORM (Write One Read Many) technology. They are a great alternative for multi-user, 24x7 network environments. These libraries offer faster access speeds and are considerably less expensive than alternative solutions. MO technology is best suited for fast access and long-term archival for random-access data patterns, especially if a WORM solution is needed.

With an archival media life of a minimum of 50 years, Magneto-Optical WORM (Write Once Read Many) media is the media of choice for data archival applications.

M-Series Product:
 M20 M32M52M104M156M258 M500
Maximum Number of Disks: 20 3252 104156258500
Maximum Capacity:
Using 8x Drives and 5.2GB Media 104GB166GB270GB 540GB10GB 81.3TB 2.6TB
Using 14x Drives and 9.1GB Media182GB291GB473GB 946GB1.4TB2.3TB 4.6TB
Number of Drives: 1 or 21 or 222 or 42, 4 or 62, 4 or 6 2, 4 or 6
Picker Type:singlesingledualdualdualdualdual
Average Exchange Times (seconds)
Exchange at Slot:N/AN/A2.4 2.4 2.4 2.4 2.4
Position Slot to Drive:2.7 3 .8511.251.50 1.8
Exchange at Drive*:N/AN/A4.3 4.3 4.3 4.3 4.3
Position Drive to Slot:2.7311 1.21.4 2.0
Reliability (MSBF):>1.5M>1.5M>2.8M>2.8M>2.8M>2.8M>2.8M
Dimensions and Weight
Height (US): 18 in26 in39 in41 in41 in58 in 68 in
Height (Metric): 46 cm 66 cm 99 cm103 cm103 cm 148 cm173 cm
Length (US):29 in 27.5 in29 in 29 in 29 in29 in 30 in
Length (Metric):74 cm 64 cm 73 cm 73 cm73 cm73 cm 73 cm
Width (US): 9 in 9 in14 in 32 in 32 in 32 in37 in
Width (Metric): 22 cm 31 cm 36 cm82 cm82 cm 82 cm 94 cm
Weight (no media) (US):62 lbs 80 lbs 153 lbs 276 lbs 276 lbs 426 lbs550 lbs
Weight (no media) (Metric):28 kg 36 kg 69 kg 125 kg 125 kg 193 kg250 kg
Weight (shipping) (US):89 lbs 117 lbs218 lbs402 lbs402 lbs552 lbs 820 lbs
Weight (shipping) (Metric):40 kg 53 kg99 kg 182 kg 182 kg250 kg 372 kg
Drive Specific Information*
Drive Types: 5.2GB (8x) Magneto-Optical
 9.1GB (14x) Magneto-Optical Drive
Buffer Size:
8x Drive4MB
14x Drive8MB
Media Compatibility:
8x Drives and 5.2GB Mediaread/write 5.2GB; read/write 4.8GB; read/write 4.1GB; read/write 2.6GB (MO & LIMDOW); read/write 2.3MB; read 1.3GB; read 650MB/600MB
14x Drives and 9.1GB Mediaread/write 9.1GB; read/write 5.2GB; read/write 4.8GB; read/write 4.1GB; read/write 2.6GB (MO & LIMDOW); read/write 2.3MB; read 1.3GB; read 650MB/600MB
Rotational Speed: 3,300RPM
Data Transfer Rates and Access Times:
8x Drive /5.2GB Media Data Transfer Rates
Maximum User Data Transfer Rate (2048ss)4.61MB/second
Maximum User Data Transfer Rate (1024ss)4.35MB/second
Maximum User Data Transfer Rate (512ss)3.69MB/second
Access Times/Average (1/3 full stroke)25ms
14x Drive Data Transfer Rates
Maximum User Data Transfer Rate (9.1GB, 4096ss)6.14MB/second
Maximum User Data Transfer Rate (8.6GB, 2048ss)5.84MB/second
Maximum User Data Transfer Rate (5.2GB, 2048ss) 5.07MB/second
Maximum User Data Transfer Rate (1024ss)4.79MB/second
Maximum User Data Transfer Rate (512ss)4.06MB/second
Access Times/Average (1/3 full stroke)25ms
*Specifications are drive specific and may vary with drive