PCIe-ohjain vastaa SSD-levyllä datan hallinnasta ja optimoinnista, mukaan lukien luku- ja kirjoitusoperaatiot sekä virheiden korjaus. Se jakaa kirjoitukset tasaisesti NAND-muistiin pidentääkseen sen käyttöikää ja hallitsee välimuisteja suorituskyvyn parantamiseksi. Silicon Motionin uusin ohjain tekee tämän selvästi aiempaa pienemmällä virralla.

Ohjain on tärkeä komponentti datan tallennuksessa. Se huolehtii tietoturvasta tarjoamalla laitteistopohjaista salausta ja turvallista datan poistoa. Se hallinnoi kommunikaatiota SSD-levyn ja isäntäjärjestelmän välillä PCIe-väylän kautta ja tukee NVMe-protokollaa. Ohjain myös optimoi virrankulutuksen ja suorittaa SSD-laiteohjelmiston. Voidaan sanoa, että ohjain on SSD-levyn "aivot", joka varmistaa datan tallennuksen, haun, tietoturvan ja yhteydenpidon tehokkuuden ja luotettavuuden.

Silicon Motionin uusin PCIe5-ohjain on SM2508. Yhtiön mukaan se on maailman ensimmäinen PCIe Gen5 -asiakas-SSD-levyjen ohjain, joka on valmistettu TSMC:n 6 nanometrin EUV-prosessissa. Ohjaimen virrankulutus on 50 prosenttia pienempi kuin kilpailevien piirien, jotka valmistetaan 12 nanometrin viivanleveydellä.

Itse ohjain kuluttaa noin 3 wattia tehoa. SSD-levyn tehonkulutus on alle 7 wattia, mikä on 1,7 kertaa paremmin kuin neljännen sukupolven PCIe-ohjaimia käyttävillä SSD-levyillä. Uusi ohjain kahdeksaa NAND-kanavaa jopa 3 600 MT/s nopeudella kanavaa kohden. Satunnaiset kirjoitus- ja lukunopeudet yltävät jopa 14,5 Gt/s ja 13,6 Gt/s nopeuksiin. Jos vertaa neljännen sukupolven PCIe-ohjaimia käyttäviin levyihin, suorituskyky kasvaa kaksinkertaiseksi.

Silicon Motion esittelee SM2508-pohjaista SSD-suunnitteluaan ja muita innovaatioita parhaillaan käynnissä olevassa Future of Memory and Storage -tapahtumassa.

Lisätietoja Silicon Motionin verkkosivuilla.

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