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SubjectTwo equal harddrives on one cable behaving different
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Hija,

I'm currently in the process of mirroring a drive with bad sector
to an equal second one (same modell, same version, same firmware).
Both of them are on the same cable, the old one as master, the new
one is slave (now on the outer end of the cable). According to
smartctl the old one is continously ressolving a couple CRC errors
per hour while the second one hasn't suffered a single one yet.

(195)Hardware ECC Recovered 0x001a 100 100 000 29678
few minutes later:
(195)Hardware ECC Recovered 0x001a 100 100 000 29694

other drive:
(195)Hardware ECC Recovered 0x001a 100 100 000 0

The cable (80 conductor) seems fine (optically) and I'd wonder if it
is the culprit because the drive on the outer end (now) works fine.

Any idea?

Just for the records:
ATA device, with non-removable media
Model Number: MAXTOR 6L080J4
Serial Number: 6642121550**
Firmware Revision: A93.0500
Standards:
Used: ATA/ATAPI-5 T13 1321D revision 1
Supported: 5 4 3 2 & some of 6
Configuration:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
--
CHS current addressable sectors: 16514064
LBA user addressable sectors: 156355584
device size with M = 1024*1024: 76345 MBytes
device size with M = 1000*1000: 80054 MBytes (80 GB)
Capabilities:
LBA, IORDY(can be disabled)
bytes avail on r/w long: 4 Queue depth: 1
Standby timer values: spec'd by Vendor, no device specific minimum
R/W multiple sector transfer: Max = 16 Current = 16
Recommended acoustic management value: 128, current value: 254
DMA: mdma0 mdma1 mdma2 udma0 udma1 *udma2 udma3 udma4 udma5 udma6
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns


ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
VP_IDE: IDE controller on PCI bus 00 dev 39
VP_IDE: chipset revision 6
VP_IDE: not 100%% native mode: will probe irqs later
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
VP_IDE: VIA vt82c586b (rev 47) IDE UDMA33 controller on pci00:07.1
ide0: BM-DMA at 0xe000-0xe007, BIOS settings: hda:DMA, hdb:DMA
ide1: BM-DMA at 0xe008-0xe00f, BIOS settings: hdc:DMA, hdd:DMA
hda: WDC WD400EB-00CPF0, ATA DISK drive
hdc: MAXTOR 6L080J4, ATA DISK drive
hdd: MAXTOR 6L080J4, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: 78165360 sectors (40021 MB) w/2048KiB Cache, CHS=77545/16/63
hdc: 156355584 sectors (80054 MB) w/1819KiB Cache, CHS=155114/16/63
hdd: 156355584 sectors (80054 MB) w/1819KiB Cache, CHS=155114/16/63

00:00.0 Host bridge: VIA Technologies, Inc. VT82C598 [Apollo MVP3] (rev 04)
Flags: bus master, medium devsel, latency 0
Memory at e2000000 (32-bit, prefetchable) [size=4M]
Capabilities: [a0] AGP version 1.0

00:01.0 PCI bridge: VIA Technologies, Inc. VT82C598/694x [Apollo MVP3/Pro133x AGP] (prog-if 00 [Normal decode])
Flags: bus master, 66Mhz, medium devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: 0000d000-0000dfff

00:07.0 ISA bridge: VIA Technologies, Inc. VT82C586/A/B PCI-to-ISA [Apollo VP] (rev 47)
Subsystem: VIA Technologies, Inc. MVP3 ISA Bridge
Flags: bus master, stepping, medium devsel, latency 0

00:07.1 IDE interface: VIA Technologies, Inc. Bus Master IDE (rev 06) (prog-if 8a [Master SecP PriP])
Flags: bus master, medium devsel, latency 64
I/O ports at e000 [size=16]

--
Servus,
Daniel
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