Recommendations
Performance impact
Connection type
Ultra 160 is a good transport medium,
but does not have enough bandwidth
for LTO-3 or LTO-4 tape drives. If using
LTO-3 or LTO-4, upgrade to an Ultra
320 HBA, especially if you have greater
than 2:1 compressible data.
•
LTO-2:
GOOD
. When fully used and
assuming that the connection to the
disks does not force the speed to a
lower parallel SCSI type, an Ultra
160 connection can provide enough
bandwidth for two LTO-2 tape drives.
•
LTO-3:
MARGINAL
. An Ultra 160
connection is barely adequate for an
LTO-3 tape drive. The bus would be
saturated with 2:1 compressible
data.
•
LTO-4:
POOR
. An LTO-4 tape drive
is unable to sustain maximum transfer
speeds with 2:1 compressible data.
Parallel SCSI: Ultra 160
Upgrade to Ultra 320.
•
LTO-2:
MARGINAL
. Ultra 2 (80)
barely has enough bandwidth for
one LTO-2 drive.
•
LTO-3, LTO-4:
POOR
. An Ultra 2 (80)
connection is inadequate for an LTO-
3 or LTO-4 tape drive.
Parallel SCSI: Ultra 2
(80)
Upgrade to Ultra 320.
Ultra Wide and Fast Wide are
inadequate for all of the currently
supported tape drives.
Parallel SCSI: Ultra
Wide, Fast Wide
For LTO-3 tape drives, upgrade to 2 or
4 Gb Fibre Channel. For LTO-4 or LTO-5
tape drives, upgrade to 4 Gb Fibre
Channel.
Upgrade to 4 Gb Fibre Channel.
POOR
. One gigabit fibre is inadequate
for an LTO tape drive.
Fibre Channel: 1 Gb
For LTO-4 or LTO-5 tape drives, upgrade
to 4 Gb Fibre Channel.
Upgrade to 4 Gb Fibre Channel.
•
LTO-3:
GOOD
. When fully used, 2
Gb Fibre Channel has plenty of
bandwidth for an LTO-3 tape drive.
•
LTO-4:
MARGINAL
. An LTO-4 tape
drive is unable to sustain maximum
transfer speeds with 2:1 compressible
data.
•
LTO-5:
POOR
. Two gigabit fibre is
inadequate for an LTO-5 tape drive.
Fibre Channel: 2 Gb
GOOD
. When fully used, 4 Gb and 8
Gb Fibre Channel have sufficient
bandwidth for all supported tape drives.
Fibre Channel: 4 Gb, 8
Gb
GOOD
. When fully used, 3 Gb and 6
Gb SAS have sufficient bandwidth for
all supported tape drives.
SAS: 3 Gb, 6 Gb
HP StorageWorks MSL2024, MSL4048, MSL8048, and MSL8096 Tape Libraries User and service
guide
175
Summary of Contents for StorageWorks MSL2024
Page 16: ...16 ...
Page 216: ...Troubleshooting 216 ...
Page 240: ...Upgrading and servicing the Tape Library 240 ...
Page 244: ...Support and other resources 244 ...
Page 251: ...HP StorageWorks MSL2024 MSL4048 MSL8048 and MSL8096 Tape Libraries User and service guide 251 ...
Page 260: ...Battery replacement notices Dutch battery notice Regulatory compliance and safety 260 ...
Page 262: ...Italian battery notice Japanese battery notice Regulatory compliance and safety 262 ...
Page 264: ...Regulatory compliance and safety 264 ...
Page 266: ...Electrostatic discharge 266 ...