Storage Presentation System Description
40 U41840-J-Z125-7-76
Storage Presentation
The ETERNUS CS800 presents its disk storage using multiple protocols:
● "Virtual Tape Storage"
● "Network Attached Storage (NAS)"
● "Open Storage (OST)"
Virtual Tape Storage
A virtual tape storage or virtual tape library (VTL) presentation allows the storage space on
these hard drives to appear to the backup application as tape cartridges (DLT or LTO). Data
is stored on the hard drives through an interface that appears as a tape library, with virtual
cartridges, virtual drives, and a virtual changer mechanism. An ETERNUS CS800 can be
configured to present multiple VTL interfaces of different sizes and types at once. This
allows backup applications to recognize and integrate an ETERNUS CS800 system into a
data center environment just like one or more physical tape libraries. ETERNUS CS800
provides a number of tape drive and library emulations including the tape drive emulations:
● IBM LTO-2, LTO-3, LTO-4, or LTO-5
● HP LTO-2, LTO-3, LTO-4, LTO-5, and LTO-6
and the library emulations:
● Fujitsu CS-TL
● ADIC Scalar i2000, or ADIC Scalar i500
Figure 4: Virtual Tape Library (VTL)
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