Compaq ProLiant 6000 Compaq DLT Tape Array II: High-Performance Backup of Ente - Page 24

TX Ethernet

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ECG075.0997 (cont.) DLT Tape Array II ... in a test of four simultaneous backups over one network connection (Test 9), the backup rate climbs to 32.4 GB/hr. As discussed in Test 6, an obvious match for many network backup requirements is the 15/30 GB DLT drive. This drive performs backups at about 10 GB/hr. A pair of these drives in the DLT Library can easily handle two concurrent backup over a single 100 TX Ethernet connection. As network load distribution is an important factor in backup speeds, it is not recommended that more than four systems be simultaneously backed up to two DLT Library units (with two drives in each). To back up more than four systems simultaneously, add additional network (100TX) connections as needed (Figure 14). 4 Pentium Pro Processors 256 MB Memory Secondary PCI Bus Slots 7 Cards Devices SCSI L1T1 L1T2 8 SCSI T5 T6 9 NETX2 N1 N2 10 SMART2 S1 S2 11 NETX2 N3 N4 Primary PCI Bus 3 SCSI L3T3 L2T4 4 SCSI T7 T8 5 NETX2 N5 N6 6 SMART-2 S3 S4 L1T1-L2T4 = DLT Library units T1-T4 = DLT Library, 15/30 GB DLT drives T5-T8 = DLT Tape Array II, 35/70 GB DLT drives N1-N4 = 100TX connections direct to servers N5-N6 = 100TX connections to db client systems SCSI = Wide-Ultra SCSI cards NETX2 - Netelligent Dual 10/100 TX PCI UTP Controlle SMART-2 = SMART-2 Hard Disk Controller Figure 14: A typical backup configuration for a large network system using Compaq DLT Tape Array and DLT Library solutions. Such a system can have more than 250 GB of space available for typical server applications. With the DLT Tape Array II, it can easily do high speed backups at night or concurrent backups at any time. The DLT Library units allow a server do double duty as a central backup server for any other servers over its four 100TX network links.. The final two 100TX network connections are used to ensure high performance access to the data on this server from client (user) machines on the network. 10TX Ethernet 100TX Ethernet 3.24 2.82 19 6.9 Table 9: Test data for Windows NT simple backup of a remote client.

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7
%
(cont.)
DLT Tape Array II
ECG075.0997
in a test of four simultaneous backups over one network connection (Test 9), the backup rate
climbs to 32.4 GB/hr.
As discussed in Test 6, an obvious match for many network backup requirements is the 15/30
GB DLT drive. This drive performs backups at about 10 GB/hr. A pair of these drives in the
DLT Library can easily handle two concurrent backup over a single 100 TX Ethernet
connection. As network load distribution is an important factor in backup speeds, it is not
recommended that more than four systems be simultaneously backed up to two DLT Library
units (with two drives in each). To back up more than four systems simultaneously, add
additional network (100TX) connections as needed (Figure 14).
256 MB
Memory
4 Pentium
Pro
Processors
Secondary PCI Bus
Primary PCI Bus
7
8
9
10
11
3
4
5
6
Slots
L1T1
T5
L1T2
N1
T6
S1
N2
S2
L3T3
L2T4
T7
T8
N5
N6
S3
S4
SCSI
SCSI
SCSI
SCSI
NETX2
NETX2
SMART-
2
SMART-2
NETX2
Cards
Devices
N3
N4
L1T1-L2T4 = DLT Library units
T1-T4 = DLT Library, 15/30 GB DLT drives
T5-T8 = DLT Tape Array II, 35/70 GB DLT drives
N1-N4 = 100TX connections direct to servers
N5-N6 = 100TX connections to db client systems
SCSI = Wide-Ultra SCSI cards
NETX2 - Netelligent Dual 10/100 TX PCI UTP Controlle
SMART-2 = SMART-2 Hard Disk Controller
Figure 14: A typical backup configuration for a large network system
using Compaq DLT Tape Array and DLT Library solutions.
Such a system can have more than 250 GB of space available for typical server applications.
With the DLT Tape Array II, it can easily do high speed backups at night or concurrent backups
at any time. The DLT Library units allow a server do double duty as a central backup server for
any other servers over its four 100TX network links.. The final two 100TX network
connections are used to ensure high performance access to the data on this server from client
(user) machines on the network.
10TX Ethernet
3.24
2.82
100TX Ethernet
19
6.9
Table 9: Test data for Windows NT simple backup of a remote client.
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