DAC uwea wikiwiki wikiwiki(Direct Attach Cable) ua unuhi 'ia ma ke 'ano he uwea pololei, uwea keleawe ho'opili pololei a i 'ole uwea ki'eki'e.Ua wehewehe ʻia ma ke ʻano he kumu pili liʻiliʻi liʻiliʻi liʻiliʻi e pani ana i nā modula optical.Loaʻa i nā ʻaoʻao ʻelua o ke kaula kiʻekiʻe nā modula ʻO nā hui kelepona, nā awa hiki ʻole ke hoʻololi ʻia, nā poʻo module a me nā kaula keleawe ʻaʻole hiki ke hoʻokaʻawale ʻia, akā ke hoʻohālikelike ʻia me nā module optical active optical cables (Active Optical Cables), nā modules connector on high-speed cables. ʻAʻole loaʻa nā lasers optical pipiʻi a me nā mea uila ʻē aʻe, no laila e mālama nui i ke kumukūʻai a me ka hoʻohana ʻana i ka mana i nā noi mamao.Me nā wikiwiki Ethernet kiʻekiʻe, ka helu kapuaʻi, ka Internet of Things, a me nā kikowaena data virtual, ua kau ʻia nā koi hou aku ma luna o nā mea hoʻohana kikowaena data.ʻO ka wikiwiki o ka ʻikepili ma ke ala i 400G, no laila ma ka hoʻohui ʻana i loko o 3-5m i ka server, hiki ke hoʻohana ʻia ʻo DAC (5-7 mika pono e hoʻohana i nā mea insulating kūikawā e hoʻokō i nā koi ʻano).ʻO ka pilina ma waho aʻe o kēia mau mamao i ʻike ʻia e AOC.
Hoʻohana ka 10G SFP + i SFP + DAC i kahi hui kaula twinaxial passive a hoʻopili pololei i ka module SFP +, e hōʻike ana i ke kiʻekiʻe kiʻekiʻe, ka mana haʻahaʻa, ke kumu kūʻai haʻahaʻa, a me ka latency haʻahaʻa.
He aha nā ʻano o 10G SFP + a i SFP + kiʻekiʻe kiʻekiʻe i loaʻa?
Ma ka ʻōlelo maʻamau, aia ʻekolu ʻano o 10G SFP+ a i SFP+ mau kelepona kiʻekiʻe:
10G SFP+ passive copper core high-speed cable (DAC),
10G SFP+ Active Copper Core High Speed Cable (ACC),
10G SFP+ Uila Optical Active (AOC),
Ua kūpono lākou no nā pili pūnaewele i loko o kahi pahu a ma waena o nā pā e pili ana a he kumu kūʻai loa.
Hāʻawi ka SFP+ passive copper core high-speed cable i kahi kikowaena uila pololei ma waena o nā ʻaoʻao ʻelua o ke kaula pili, a hiki i ka mamao pili ke hiki i 12m.Eia naʻe, ma muli o ke kaumaha kaumaha o ke kaula a me ka noʻonoʻo ʻana i ka pilikia o ka hōʻailona hōʻailona, ka lōʻihi o kona hoʻohana ʻia ʻo ia ka palena ma waena o 7m a me 10m.
40G QSFP+ i ka QSFP+ Uila Kiʻekiʻe
ʻO ka 40G high-speed cable (DAC) e pili ana i kahi kaula hoʻohui me nā transceivers fiber optic ma nā wēlau ʻelua, hiki ke hoʻokō i ka hoʻoili ʻikepili 40Gbps a he kumu kūʻai kūʻai.Hiki ke hoʻokaʻawale ʻia nā uea kiʻekiʻe 40G maʻamau i ʻekolu ʻano: 40G QSFP + i QSFP + DAC, 40GQSFP + i 4 * SFP + DAC, a me 40GQSFP + i 4XFP + DAC.
40G QSFP + i QSFP + DAC ua haku ʻia ʻelua 40G QSFP + transceivers optical a me nā uea keleawe kumu.Hiki ke hoʻohana ʻia kēia uwea kiʻekiʻe e ʻike i ka pilina o nā awa 40G QSFP+ i kēia manawa i nā awa 40G QSFP+, maʻamau wale nō i loko o 7m.mamao.
40G QSFP + i 4 × SFP + DAC ua haku ʻia me hoʻokahi 40G QSFP + optical transceiver, copper core wire a me ʻehā 10G SFP + optical transceiver.ʻO kekahi hopena ʻo 40G QSFP + interface, e kū ana i nā koi o SFF-8436, a ʻo ka hopena ʻehā ʻehā mau kikowaena 10G SFP +., e like me nā koi o SFF-8432, i hoʻohana nui ʻia e ʻike i ka pilina ma waena o 40G a me 10G lako (NIC / HBA / CNA, nā mea hoʻololi a me ka server), e like me nā koi o ka mea kūʻai aku no ka lōʻihi o nā kaula ma nā ʻaoʻao ʻelua. i loko o 7m wale nō.ʻO ka mamao, ʻo ia ka mea maʻalahi a maʻalahi e hoʻokō i ka hoʻololi ʻana i ke awa.
Hoʻokumu ʻia ka 40G QSFP + i 4XFP DAC me kahi transceiver optical 40G QSFP +, uea copper core a me nā transceiver optical 10G XFP ʻehā.No ka mea, ʻaʻole i loaʻa i ka XFP fiber optic transceiver ka DAC copper cable standard, haʻahaʻa ka uku hōʻailona i hāʻawi ʻia e ka hāmeʻa, a nui loa ka nalowale o ke kaula ponoʻī.Hiki ke hoʻohana wale ʻia no ka hoʻouna ʻana i kahi mamao pōkole, maʻamau ma kahi mamao o 2m.No laila, hiki ke hoʻohana ʻia kēia kelepona kiʻekiʻe no Interconnects i nā awa 40G QSFP + i nā awa 4 XFP.
25G SFP28 a i SFP28 Uea Kiekie
Hiki i ka 25G SFP28 a i ka SFP28 DAC ke hāʻawi aku i nā mea kūʻai aku me 25G high-bandwidth data interconnection capability, ma ka laina me IEEE P802.3by Ethernet standard a me SFF-8402 SFP28, a hoʻohana nui ʻia i ka ʻikepili kikowaena a i ʻole nā hiʻohiʻona ʻōnaehana kikowaena supercomputing.
100G QSFP28 a i QSFP28 Uea Kiekie
Hiki i ka 100G QSFP28 i ka QSFP28 DAC ke hāʻawi aku i nā mea kūʻai aku me 100G high-bandwidth data interconnection capability, e hāʻawi ana i 4 duplex channels, hiki i kēlā me kēia kahawai ke kākoʻo a hiki i ka 25Gb / s pae hana, a ʻo ka bandwidth aggregation he 100Gb / s, e like me ka SFF-8436 kikoʻī, hoʻohana ʻia i ka pilina ma waena o nā mea me nā awa QSFP28.
100G QSFP28 i ka 4*SFP28 Uea Kiekie
ʻO kekahi hopena o ka 100G QSFP28 i ka 4 SFP28 DAC he 100G QSFP28 interface, a ʻo ka hopena ʻē aʻe he 4 25G SFP28 interfaces, hiki ke hāʻawi i nā mea kūʻai aku me 100G high-bandwidth data interconnection capability, e like me SFF-8665/SFF-8679, IEEE 802.3bj a me InfinibandEDR maʻamau, hoʻohana nui ʻia i ke kikowaena ʻikepili a i ʻole nā hiʻohiʻona ʻōnaehana kikowaena super computing.
Ka manawa hoʻouna: Oct-18-2022