{"id":33702,"date":"2019-10-31T21:54:15","date_gmt":"2019-10-31T18:54:15","guid":{"rendered":"https:\/\/prohoster.info\/blog\/monitoring-sostoyaniya-ssd-v-massivah-qsan\/"},"modified":"2019-10-31T21:54:15","modified_gmt":"2019-10-31T18:54:15","slug":"monitoring-sostoyaniya-ssd-v-massivah-qsan","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/monitoring-sostoyaniya-ssd-v-massivah-qsan","title":{"rendered":"Qsan massiivide SSD-de oleku j\u00e4lgimine","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Koonid SSD-d on andmehoidlas juba k\u00f5igi jaoks tavaline n\u00e4htus. SSD-d on kindlalt juurdunud IT-seadmestikus alates personaalarvutitest ja s\u00fclearvutitest kuni serverite ja andmete salvestuss\u00fcsteemideni. Selle aja jooksul on vahetunud mitu SSD p\u00f5lvkonda, millest iga\u00fchel on olnud t\u00e4iustatud omadused j\u00f5udluse, usaldusv\u00e4\u00e4rsuse ja maksimaalse mahutavuse osas. Kuid SSD kirjutamisressursi j\u00e4lgimise k\u00fcsimus on endiselt aktuaalne.<\/p>\n

<\/p>\n

\"Qsan
\n<\/a><\/noindex><\/p>\n

T\u00f5endusp\u00f5hised SSD-d omavad oma f\u00fc\u00fcsilise ehituse t\u00f5ttu eelnevalt piiratud kirjutamisressurssi. Fakt, et SSD-le kirjutatakse tegelikult palju rohkem andmeid, kui host sellep\u00e4rast saadab (eriti RAID-grupis), viib meid veelgi l\u00e4hemale m\u00e4\u00e4ratud piirangule. See asjaolu tekitab teatud hirmu m\u00f5nede kasutajate seas SSD-de kasutamisel.<\/p>\n

<\/p>\n

Tegelikult ei ole asja \u00fcldse nii hull. DWPD arvesti ressurss kehtib kogu garantii jooksul (tavaliselt 3-5 aastat). Seet\u00f5ttu on tegelik kirjutusressurss TBW \u00fcsna muljetavaldav, mis v\u00f5imaldab mitte karta SSD kasutamist vaid m\u00f5ne kuu jooksul. Veelgi enam, teatud juhtudel on v\u00f5imalik kettaid ajutiselt kasutada intensiivsemal viisil kui tootja ette n\u00e4eb, just t\u00e4nu k\u00f5rgetele TBW v\u00e4\u00e4rtustele. Kuid see ei vabasta siiski vajadust j\u00e4lgida iga konkreetse SSD kirjutusressurssi proaktiivse asendamise eesm\u00e4rgil teatud piiride saavutamisel.<\/p>\n

<\/p>\n

Iga andmesalvestuslahenduse tootja rakendab seda funktsionaalsust omal moel. Kuid k\u00f5ige sagedamini on see lihtsalt ketta t\u00f6\u00f6v\u00f5ime omadus, \u00f5ige \/ vale. Qsan<\/a><\/noindex> oma All Flash s\u00fcsteemides<\/a><\/noindex>, vastupidi, tegi SSD praeguse aktiivsuse parameetrite t\u00e4ieliku visualiseerimise eraldi mooduli nimega QSLife. See moodul on uusima operatsioonis\u00fcsteemi lahutamatu osa XEVO<\/a><\/noindex>, mille all tulevikus t\u00f6\u00f6tavad k\u00f5ik Qsan andmesalvestuss\u00fcsteemid.<\/p>\n

<\/p>\n

Iga s\u00fcsteemi SSD jaoks kuvatakse k\u00f5ige kergemini arusaadaval kujul praegune \"eluea tase\". Pole saladus, et k\u00f5ik kaasaegsed SSD-d j\u00e4lgivad ise neile kirjutatud plokkide arvu. Nende n\u00e4itude p\u00f5hjal arvutab s\u00fcsteem ketta kulumise m\u00e4\u00e4ra vastavalt selle partitsioonile. L\u00f5pptulemus kuvatakse protsentides t\u00e4iesti uue SSD n\u00e4idust. Samuti tuleb m\u00e4rkida, et kulumise tase arvutatakse mitte ainult selle ajavahemiku jooksul, mil ketas t\u00f6\u00f6tas Qsani All Flash s\u00fcsteemi koostisosana, vaid kogu selle eluea jooksul, sealhulgas t\u00f6\u00f6des teiste s\u00fcsteemide koosseisus (kui see on olnud).<\/p>\n

<\/p>\n

\"Qsan<\/p>\n

Lihtsustatud teabe k\u00f5rval ketta kohta on v\u00f5imalik teada saada ka m\u00f5ningaid detaile. Eelk\u00f5ige kogu eluea jooksul kirjutatud andmete maht. Ja ajavahemiku jooksul, mil ketas t\u00f6\u00f6tas Qsani All Flash s\u00fcsteemis<\/a><\/noindex>, on saadaval ka graafikud selle t\u00f6\u00f6 kohta lugemise ja kirjutamise operatsioonides. Statistika kogutakse reaalajas ja on saadaval igasuguste perioodide jooksul, mille s\u00fcgavuse vaatamine on kuni \u00fcks aasta.<\/p>\n

<\/p>\n

\"Qsan<\/p>\n

Muidugi on selle funktsiooni eesm\u00e4rk mitte ainult ilusa graafika loomine administraatori r\u00f5\u00f5muks, vaid ka proaktiivne anal\u00fc\u00fcs salvestusseadmestiku seisukorrast ja potentsiaalsete probleemide ennetamine tulevikus, mis on seotud nende kulumisega. Seet\u00f5ttu saab SSD-eluts\u00fckli taseme kohta seadistada hulga k\u00fcnniseid ja vastavaid toiminguid, mis on seotud SSD kirjutamisressursi ammendumisega.<\/p>\n

<\/p>\n

\"Qsan<\/p>\n

Kui vaadata teisi SAN-mudeleid (mitte spetsialiseeritud All Flash, vaid \u00fcldotstarbelisi) Qsanilt<\/a><\/noindex>, siis neis ei ole sarnast visualiseeritud aruannet salvestusseadmestiku kohta. See on arusaadav: l\u00f5ppude l\u00f5puks peab lipulaev kuidagi mainstream'ist erinema. Kuid ka regulaarses tooteportfellides toimub sarnane j\u00e4lgimine. Jah, ilma kasutamise ja j\u00f5udlusega seotud statistikat kogumata. Kuid peamine funktsioon kirjutamisressursi j\u00e4lgimiseks on olemas.<\/p>\n

<\/p>\n

\"Qsan<\/p>\n

Kuna pidevat tehnoloogia t\u00e4iustamist tahkete m\u00e4lupulkade tootmises on nende usaldusv\u00e4\u00e4rsuse k\u00fcsimus m\u00f5nev\u00f5rra vaibunud. Siiski on nende kirjutusressursi j\u00e4lgimine endiselt oluline. H\u00e4sti seadistatud j\u00e4lgimine v\u00f5imaldab administraatoril ette ennustada SSD-de vananemist vastavalt tegelikele koormustele ja ettev\u00f5tte juhtkonnal arvutada TCO (kokkuv\u00f5tlik omamiskulu).<\/p><\/blockquote>\n

Allikas: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u0442\u0432\u0435\u0440\u0434\u043e\u0442\u0435\u043b\u044c\u043d\u044b\u0445 \u043d\u0430\u043a\u043e\u043f\u0438\u0442\u0435\u043b\u0435\u0439 \u0432 \u0441\u0444\u0435\u0440\u0435 \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445 \u0443\u0436\u0435 \u043d\u0438\u043a\u043e\u0433\u043e \u043d\u0435 \u0443\u0434\u0438\u0432\u0438\u0448\u044c. 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