twe question

[freebsd_daemon]

dear list,

i own a 3ware 7500-4LP (FBSD 4.11R)

twe0: <3ware Storage Controller driver ver. 1.40.01.001> port 0xb000-0xb00f
mem 0xf9000000-0xf97fffff,0xf9800000-0xf980000f irq 9 at device 1.0 on pci3
twe0: AEN: <soft reset>
twe0: 4 ports, Firmware FE7X 1.05.00.049, BIOS BE7X 1.08.00.046
twe0: Monitor ME7X 1.01.00.035, PCB Rev3    , Achip V3.20   , Pchip V1.30
twe0: port 0: ST3200822A                               190782MB
twe0: port 1: ST3200822A                               190782MB
twe0: port 2: ST3200822A                               190782MB
twe0: port 3: ST3200822A                               190782MB

two days ago i got the following log message

twe0: AEN: <twe0: port 1: sector repair occurred>

what does it mean? (source code doesn't say)
the box is running for nearly 400 days now; until now no problems and for
the last two days no message.

do i have to worry?

TIA

zheyu

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