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Teck Sim
Frequent Advisor


I am using ARCserve to backup Oracle database(cold backup) and all unix directories. The database shuts down at 11:30pm, and it re-starts at around 6am the next day. After 7 hour 1 minute 46 second, not all files have been backup, and it's only 0.41 MB/Minute during the backup process.
Can anyone tell me what's going on here?

Thanks in advance
harry d brown jr
Honored Contributor

Re: ARCserve

Make sure you aren't using compression with ARCserve, let the tape drive do it. I agree you should have a lot better performance, but it also depends upon your hardware configuration.

How about providing as a TEXT attachment:

(if you don't have that load it from here:

the output from

ioscan -fn
vgdisplay -v

Also, which tape drive you are using and what kind of tape drive it is.

Also, when was the last time you cleaned the tape drive?

live free or die
Live Free or Die
Leif Halvarsson_2
Honored Contributor

Re: ARCserve

I assume ARCserve is running on a Windows computer and the drive is connected to this. Do you run other backups to this drive and with normal performance. Try ftp (in both directions) from the Windows box to the Unix (don't forget switching to binary mode) to check if this can be a network problem.
Darrell Allen
Honored Contributor

Re: ARCserve

How much data is being backed up?

What type tape drive (DDS, DDS3, DLT700,)?

Is the tape drive directly connected to the machine with the data being backed up or is it over the network?

What is the OS of the backup server?

People will be better equiped to advise once you provide more information.

"What, Me Worry?" - Alfred E. Neuman (Mad Magazine)
Teck Sim
Frequent Advisor

Re: ARCserve

I don't know if the following lanadmin info. would help:

Fri, Oct 11,2002 08:48:23

PPA Number = 1
Description = lan1 Hewlett-Packard LAN Interface Hw Rev 0
Type (value) = ethernet-csmacd(6)
MTU Size = 1500
Speed = 10000000
Station Address = 0x60b0a3d8b0
Administration Status (value) = up(1)
Operation Status (value) = down(2)
Last Change = 100
Inbound Octets = 383212536
Inbound Unicast Packets = 0
Inbound Non-Unicast Packets = 0
Inbound Discards = 0
Inbound Errors = 0
Inbound Unknown Protocols = 0
Outbound Octets = 574818804
Outbound Unicast Packets = 2932749
Outbound Non-Unicast Packets = 0
Outbound Discards = 0
Outbound Errors = 0
Outbound Queue Length = 0
Specific = 655367

Press to continue

Ethernet-like Statistics Group

Index = 1
Alignment Errors = 0
FCS Errors = 0
Single Collision Frames = 0
Multiple Collision Frames = 0
Deferred Transmissions = 0
Late Collisions = 0
Excessive Collisions = 0
Internal MAC Transmit Errors = 0
Carrier Sense Errors = 977583
Frames Too Long = 0
Internal MAC Receive Errors = 0
Teck Sim
Frequent Advisor

Re: ARCserve

[wally:/] # ioscan -fn
Class I H/W Path Driver S/W State H/W Type Description
bc 1 8 bc CLAIMED BUS_NEXUS Pseudo Bus Convr
lan 0 8/4/1/0 btlan4 CLAIMED INTERFACE PCI Ethernet (1)
ba 1 8/16 bus_adapter CLAIMED BUS_NEXUS Core I/O Adapter
ext_bus 1 8/16/0 CentIf CLAIMED INTERFACE Built-in Paralle
tty 0 8/16/4 asio0 CLAIMED INTERFACE Built-in RS-232C
/dev/diag/mux0 /dev/mux0 /dev/tty0p0
ext_bus 0 8/16/5 c720 CLAIMED INTERFACE Built-in SCSI
target 0 8/16/5.0 tgt CLAIMED DEVICE
tape 0 8/16/5.0.0 stape CLAIMED DEVICE HP C1533A
/dev/rmt/0m /dev/rmt/c0t0d0BESTn
/dev/rmt/0mb /dev/rmt/c0t0d0BESTnb
/dev/rmt/0mn /dev/rmt/c0t0d0DDS
/dev/rmt/0mnb /dev/rmt/c0t0d0DDSb
/dev/rmt/c0t0d0BEST /dev/rmt/c0t0d0DDSn
/dev/rmt/c0t0d0BESTb /dev/rmt/c0t0d0DDSnb
target 1 8/16/5.1 tgt CLAIMED DEVICE
disk 0 8/16/5.1.0 sdisk CLAIMED DEVICE SEAGATE ST31827C
/dev/dsk/c0t1d0 /dev/rdsk/c0t1d0
target 2 8/16/5.2 tgt CLAIMED DEVICE
disk 1 8/16/5.2.0 sdisk CLAIMED DEVICE TOSHIBA CD-ROM A
/dev/dsk/c0t2d0 /dev/rdsk/c0t2d0
target 3 8/16/5.3 tgt CLAIMED DEVICE
disk 2 8/16/5.3.0 sdisk CLAIMED DEVICE SEAGATE ST31827C
/dev/dsk/c0t3d0 /dev/rdsk/c0t3d0
target 4 8/16/5.4 tgt CLAIMED DEVICE
disk 3 8/16/5.4.0 sdisk CLAIMED DEVICE SEAGATE ST31841N
/dev/dsk/c0t4d0 /dev/rdsk/c0t4d0
target 5 8/16/5.5 tgt CLAIMED DEVICE
disk 4 8/16/5.5.0 sdisk CLAIMED DEVICE SEAGATE ST31841N
/dev/dsk/c0t5d0 /dev/rdsk/c0t5d0
target 6 8/16/5.6 tgt CLAIMED DEVICE
disk 5 8/16/5.6.0 sdisk CLAIMED DEVICE SEAGATE ST34572N
/dev/dsk/c0t6d0 /dev/rdsk/c0t6d0
target 7 8/16/5.7 tgt CLAIMED DEVICE
ctl 0 8/16/5.7.0 sctl CLAIMED DEVICE Initiator
lan 1 8/16/6 lan2 CLAIMED INTERFACE Built-in LAN
/dev/diag/lan1 /dev/ether1
ps2 0 8/16/7 ps2 CLAIMED INTERFACE Built-in Keyboae
/dev/ps2_0 /dev/ps2kbd
/dev/ps2_1 /dev/ps2mouse
ba 2 8/20 bus_adapter CLAIMED BUS_NEXUS Core I/O Adapter
tty 1 8/20/2 asio0 CLAIMED INTERFACE Built-in RS-232C
/dev/diag/mux1 /dev/mux1 /dev/tty1p0
ba 3 8/20/5 eisa CLAIMED BUS_NEXUS EISA Bus Adapter
processor 0 62 processor CLAIMED PROCESSOR Processor
memory 0 63 memory CLAIMED MEMORY Memory
T G Manikandan
Honored Contributor

Re: ARCserve

There are some Carrier sense errors listed.

This might be a mismatch in duplex setting with the server and the switch.
Make sure that the duplex setting match.

Also this could be due to a bad network cable.
Try replacing it.

Teck Sim
Frequent Advisor

Re: ARCserve

T G:
I don't understand what you have just said. I am new to UNIX admin, and I hope you can give me steps to solve this possible "mismatch" in duplex.

Robert-Jan Goossens
Honored Contributor

Re: ARCserve

You can check on your swich following setting

autoneg on/off
speed 10/100
duplex half/full

on your server start sam

click networking and communications
click network interface cards
highlight current interface card
actions, modify

here you read/modify currend settings.

With regards Robert-Jan.
Teck Sim
Frequent Advisor

Re: ARCserve

I followed your steps, and

autoneg: on
speed: no setting
duplex: no setting

What's next?


Robert-Jan Goossens
Honored Contributor

Re: ARCserve

Try to find out with your network guys what kind of configuration they used on your port/switch.