Scalar i6000 Installation Guide 99
LTO Drives
Five generations of LTO drives are supported, but they are not fully compatible as shown in Table 3.
All LTO cartridges are the same size, which means they use the same magazines in the library.
LTO drives can be directly attached to hosts, attached to the SAN, or connected to FC I/O blades in the
I/O management unit. SCSI drives must be directly attached to hosts or to the SAN.
Table 3 LTO Drive and Cartridge Compatibility
LTO-1
Cartridges
LTO-2
Cartridges
LTO-3
Cartridges
LTO-3
WORM
LTO-4
Cartridges
LTO-4
WORM
LTO-5
Cartridges
LTO-5
WORM
LTO-1
Drives
Reads/
Writes
Not
compatible
Not
compatible
Not
compatible
Not
compatible
Not
compatible
Not
compatible
Not
compatible
LTO-2
Drives
Reads/
Writes
a
a. LTO-2 drives do not reformat LTO-1 cartridges. The drives will write to the cartridges in the LTO-1 format (100 GB
capacity).
Reads/
Writes
Not
compatible
Not
compatible
Not
compatible
Not
compatible
Not
compatible
Not
compatible
LTO-3
Drives
Reads
b
b. LTO-3 drives read LTO-1; they do not write to the LTO-1 cartridges.
Reads/
Writes
c
c. LTO-3 drives do not reformat LTO-2 cartridges to contain the same density as the LTO-3 cartridges (400 GB). The
LTO-3 drives will write to the LTO-2 cartridges in the LTO-2 format (200 GB capacity).
Reads/
Writes
Write
Once,
Read
Many
d
d. LTO-3 WORM requires the installation of library firmware and WORM-supported LTO-3 tape drive code.
Not
compatible
Not
compatible
Not
compatible
Not
compatible
LTO-4
Drives
Not
compatible
Reads Reads/
Writes
Write
Once,
Read
Many
Reads/
Writes
Write
Once,
Read
Many
Not
compatible
Not
compatible
LTO-5
Drives
Not
compatible
Not
compatible
Read Read
Many
Reads/
Writes
Write
Once,
Read
Many
Reads/
Writes
Write
Once,
Read
Many
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