SATA 6 Gbit/s kabely

[Gargamel]

Forgive me my ignorance, but... uz nekolik dni se paru s krasnymi hlaskami v logu a napadlo me, jestli pro SATA 6 Gbit/s (SATA rev. 3.0) nejsou nahodou potreba nove kabely (uzpusobene na vyssi frekvenci). Zkratka jsem sahl po jakemsi cervenem kabelu ze svych zasob, mozna jeste z ery SATA 1.5 Gbit/s a ted si lamu hlavu.

Novy disk pri vyssim loadu na stejnem HW a systemu mi najednou zacal hazet errory pri zapisu. SMART i kontrola badblocks jsou v naprostem poradku. Dle Googlu na "WRITE FPDMA QUEUED" (tedy NCQ zapis) trpi vic lidi na ruznem HW, s ruznymi disky atd. Radic je v AHCI modu, podporuje jen SATA 3 Gbit/s a disk je novejsi SATA 6 Gbit/s. Ted jsem manualne shodil link portu na 1.5 Gbit/s + vypnul NCQ a zda se, ze zatim bezi bez chyb, s cca 20% vykonnostni penaltou.

ata3.00: exception Emask 0x0 SAct 0x1 SErr 0x0 action 0x6 frozen
ata3.00: failed command: WRITE FPDMA QUEUED
ata3.00: cmd 61/48:00:72:48:c0/00:00:08:00:00/40 tag 0 ncq 36864 out
         res 40/00:01:00:4f:c2/00:00:00:00:00/00 Emask 0x4 (timeout)
ata3.00: status: { DRDY }
ata3: hard resetting link
ata3: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata3.00: device reported invalid CHS sector 0
ata3: EH complete

prip.

sd 2:0:0:0: [sda] Unhandled error code
sd 2:0:0:0: [sda]  Result: hostbyte=DID_OK driverbyte=DRIVER_TIMEOUT
sd 2:0:0:0: [sda] CDB: Write(10): 2a 00 0a b4 0d 92 00 00 08 00
end_request: I/O error, dev sda, sector 179572114
Buffer I/O error on device sda3, logical block 4096268
lost page write due to I/O error on sda3

[Dix]

Urcite zkus jinej kabel, mne se stala podobna prihoda, kdyz jsem pouzil SATA 3Gbit kabel s 6Gbit diskem - vysledek stejny - nestabilita, chyby smartu. To samy Adata SSD 32GB s 6Gbit kabelem - problemy, s klasickym cervenym kabelem v poradku

[Gargamel]

FYI, tak kabelem to nebylo, objevil jsem chyby v pameti (nikdy nemichejte CL5 a CL6 pameti ve dvou bancich), po vyndani dvou modulu ale problemy pretrvavaji. Ted bezi dlouhodoby memtest, nepredpokladam chyby.

Zkusim vydyndat od Hitachi update firmware...

[Kankal]

Ac ma byt Sata 6 Gb/s zpetne kompatibilni, vcetne kabelu, problemy s kabely nastat mohou, pokud clovek narazi na nekvalitni kabel. Proste pozor na smejdy! Samotna Sata k tomu uvadi:

SATA 6Gb/s Cabling

In the transition to SATA 6Gb/s, it will be important to use high-quality cabling. Problems may be related to the use of cables made from marginal materials that perform at the edges of SATA 3Gb/s tolerances, which could become a failure point at the faster 6Gb/s signal rates. SATA-IO therefore recommends that only high quality cables and connectors be utilized for SATA 6Gb/s.

Cable manufacturers and all suppliers of SATA products are encouraged to register their products on the SATA-IO Integrators list. This list is available to the public as a resource for determining reliable products that meet the SATA interface specification.

Cituji z dokumentu: http://www.sata-io.org/documents/SAT...bs-to-6gbs.pdf

K nove desce jsem mel prilozene dva druhy Sata kabelu - jedny byly oznaceny jako 6 Gb/s. Muze to byt castecne i marketing, ale radeji jsem je pro 6Gb/s disky pouzil.