Which battery module serves which controller?

I have an original XServe RAID with only the drives served by the lower controller populated. It has been in service since about 2003, if memory serves. I have a few questions:
1) How can I tell if the cache batteries are any good? The RAID admin software seems to perpetually have them in a discharge conditioning cycle of 87-90%
2) Which battery module serves which controller (I only want to replace one if I have to)
TIA,
Will

The battery modules are redundant. They both serve both controllers, and one of the batteries can back up the caches for the specified 72 hours.
That said, if they're 5 years old, they're probably getting old. I doubt they'd each work for 72 hours. They're only $300 for the pair; it's probably worth replacing both if you value your data
Also note that drives that are 5 years old are getting long in the tooth as well. Have you had any failures yet? Most data center operators would replace the drives at the 4 year mark, and certainly by 5. A MTBF of 500,000 to 1 million hours doesn't really mean you should run them that long

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   82558 PRO/100+ Dual Port Server Adapter 714303-xxx,
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   82550 PRO/100 S Server Adapter 752438-xxx
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   82550 PRO/100 S Desktop Adapter 751767-xxx
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   82559 PRO/100+ Server Adapter 729757-xxx
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   82550 PRO/100 S Dual Port Server Adapter A56831-xxx
   82551 PRO/100 M Desktop Adapter A80897-xxx
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   CNR PRO/100 VE Desktop Adapter A10386-xxx,
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   PRO/100 VM Desktop Adapter A14323-xxx,
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Module Size Used by
reiserfs 230112 1
ext2 64860 1
snd_seq_oss 29888 0
snd_seq_midi_event 5972 1 snd_seq_oss
snd_seq 48176 4 snd_seq_oss,snd_seq_midi_event
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snd_mixer_oss 14388 1 snd_pcm_oss
snd_cs4232 13204 0
snd_wavefront 53044 0
snd_wss_lib 23988 2 snd_cs4232,snd_wavefront
snd_trident 34756 0
snd_opl3_lib 9204 2 snd_cs4232,snd_wavefront
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snd_hwdep 6904 2 snd_wavefront,snd_opl3_lib
snd_ac97_codec 100120 1 snd_trident
ac97_bus 1364 1 snd_ac97_codec
led_class 3384 0
wmi 6280 0
analog 10112 0
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serio_raw 5048 0
snd_timer 19260 4 snd_seq,snd_wss_lib,snd_opl3_lib,snd_pcm
snd_page_alloc 8092 3 snd_wss_lib,snd_trident,snd_pcm
snd_mpu401 6920 0
snd_util_mem 3220 1 snd_trident
snd_mpu401_uart 6548 4 snd_cs4232,snd_wavefront,snd_trident,snd_mpu401
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snd_seq_device 6080 4 snd_seq_oss,snd_seq,snd_opl3_lib,snd_rawmidi
shpchp 31880 0
pci_hotplug 26900 1 shpchp
snd 51460 17 snd_seq_oss,snd_seq,snd_pcm_oss,snd_mixer_oss,snd_cs4232,snd_wavefront,snd_wss_lib,snd_trident,snd_opl3_lib,snd_hwdep,snd_ac97_codec,snd_pcm,snd_timer,snd_mpu401,snd_ mpu401_uart,snd_rawmidi,snd_seq_device
ns558 4148 0
soundcore 6080 1 snd
gameport 10112 5 snd_trident,analog,ns558
sg 24712 0
evdev 9248 2
thermal 15120 0
processor 39136 1 thermal
fan 4056 0
button 5700 0
battery 9880 0
ac 3832 0
usb_storage 96000 0
ohci_hcd 23172 0
ehci_hcd 35424 0
usbhid 35136 0
usbcore 137232 5 usb_storage,ohci_hcd,ehci_hcd,usbhid
hid 39744 1 usbhid
sr_mod 14596 0
cdrom 33600 1 sr_mod
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sis5513 7288 0
ide_core 96876 1 sis5513
sis_agp 6900 1
sis 5716 2
drm 138240 3 sis
agpgart 29492 2 sis_agp,drm
i2c_core 20648 2 i2c_sis630,drm
sisfb 240008 1 sis
parport_pc 35556 1
lp 8964 0
ppdev 7192 0
parport 30924 3 parport_pc,lp,ppdev
psmouse 54536 0
8390 8692 0
8139too 23576 0
sis900 20180 0
mii 4372 2 8139too,sis900
rtc_cmos 10188 0
rtc_core 16304 1 rtc_cmos
rtc_lib 2324 1 rtc_core
ext3 126556 2
jbd 45512 1 ext3
mbcache 6488 2 ext2,ext3
sd_mod 25072 7
ata_generic 4504 0
pata_sis 9944 5
pata_acpi 3828 0
libata 157036 3 ata_generic,pata_sis,pata_acpi
scsi_mod 100500 5 sg,usb_storage,sr_mod,sd_mod,libata
module array from rc.conf
MODULES=(sis900 8139too !3c59x !winbond-840 !ne2k-pci 8390 psmouse parport ppdev lp parport_pc mii sis agpgart drm sis-agp sis5513 i2c-sis630 sr_mod cdrom hid usbhid ohci_hcd usb_storage snd_seq_oss snd_cs4232 snd_wavefront snd_wss_lib snd_trident snd_opl3_lib snd_hwdep snd_ac97_codec ac97_bus snd_pcm snd_timer snd_page_alloc snd_mpu401 snd_util_mem snd_mpu401_uart !pcspkr snd_rawmidi snd_seq_device snd soundcore)
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Thanks! I removed pcspkr already. So I have to check which modules are really dedicated to my audio hardware. I suspect none of the 3 you mention are actually needed. I guess I'll have to use lshwd or such.
Is OSSv4 lighter than ALSA. I've never used it before, and I don't really care about audio quality (sound comes out from crappy monitor speakers...).

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Message was edited by: Suresh Datti

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