Products & Solutions



The DSI520 Series Virtual Tape Library offers the most robust data protection for our customers. The DSI520-EV0 may be paired with any DSI qualified fibre-channel external storage in your environment, or the DSI520 series expansion modules, allowing expansion into the petabytes of backup capacity.

  • Enterprise-class deduplication node
  • Open systems ISV attachment
  • Up to 4 additional cluster nodes supported
  • Deduplication
  • Replication (w/ encryption / compression)
  • Secure tape encryption
  • Tape consolidation (stacking)
  • High Availability (N + 1 option)
# virtual libraries 128
# virtual tape drives 1,024
# virtual tape cartridges supported 250,000
Backend physical tape FC only
Processors 2 x Intel Xeon 4114
RAM 384 GB
Number of GBe Ports 4
Number of FC Ports 4 (16 GB) + 2 optional
Number of SAS Input Ports 0
Number of SAS Output Ports 0
Internal storage capacity (usable) 800 GB (0)
# drives 2 x 400 GB - RAID 0
Raid Level 6
Secure Encrypted Disk YES
Dimensions (H x W x D): 3.40” x 17.44” x 26.80”
Weight: 57.54 lbs
Temperature / Humidity considerations: 10 - 35 oC / 10 - 80%
Heat output / cooling requirements: 4,100 BTU’s/hr
Power supply rating (self switching) 100 - 240v, 50/60hz
Power / breaker requirements - US / C 1,100w/110v/12a
Power / breaker requirements - Int'l 1,100w/240v/6.5a
Form Factor 2U

For more information or if you have questions about our Unisys Clearpath products and backup solutions, we're available to help.

“None of the other virtual tape library vendors we looked at could support our Unisys mainframe. That’s the real benefit of working with DSI. They can automate everything on the Unisys end as well. Everything they do supports not just our open systems/server environment but also our mainframe.”

Joel Nafus, Systems Operations Manager for Wright & Filippis

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