{"id":75577,"date":"2020-03-27T07:42:08","date_gmt":"2020-03-27T05:42:08","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/fast-vp-v-shd-unity-kak-eto-rabotaet"},"modified":"2020-03-27T07:42:08","modified_gmt":"2020-03-27T05:42:08","slug":"fast-vp-v-shd-unity-kak-eto-rabotaet","status":"publish","type":"post","link":"https:\/\/prohoster.info\/lv\/blog\/administrirovanie\/fast-vp-v-shd-unity-kak-eto-rabotaet","title":{"rendered":"FAST VP Unity uzglab\u0101\u0161an\u0101: k\u0101 tas darbojas","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>\u0160odien run\u0101sim par interesantu tehnolo\u0123iju, kas \u012bstenota glab\u0101\u0161anas sist\u0113m\u0101 Unity\/Unity XT \u2013 FAST VP. Ja j\u016bs pirmo reizi dzirdat par Unity, tad saite raksta beig\u0101s \u013caus jums iepaz\u012bties ar sist\u0113mas specifik\u0101cij\u0101m. Dell EMC projektiem es str\u0101d\u0101ju pie FAST VP vair\u0101k nek\u0101 gadu. \u0160odien v\u0113los s\u012bk\u0101k past\u0101st\u012bt par \u0161o tehnolo\u0123iju un atkl\u0101t da\u017eus t\u0101s \u012bsteno\u0161anas aspektus. Protams, tikai tos, kurus at\u013cauts atkl\u0101t. Ja j\u016bs interes\u0113 efekt\u012bv\u0101s datu glab\u0101\u0161anas jaut\u0101jumi vai vienk\u0101r\u0161i nav piln\u012bgas skaidr\u012bbas par dokument\u0101ciju, tad \u0161is raksts noteikti b\u016bs noder\u012bgs un interesants. <\/p>\n<p><img decoding=\"async\" alt=\"FAST VP Unity uzglab\u0101\u0161an\u0101: k\u0101 tas darbojas\" src=\"\/wp-content\/uploads\/2020\/03\/1f026bfb90e0b050da5222cebf537be7.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\nUzreiz j\u0101pasaka, ka materi\u0101l\u0101 neb\u016bs sal\u012bdzin\u0101\u0161anas ar konkurentiem. T\u0101pat nepl\u0101noju st\u0101st\u012bt par l\u012bdz\u012bg\u0101m atv\u0113rt\u0101 koda tehnolo\u0123ij\u0101m, jo zi\u0146k\u0101r\u012bgais las\u012bt\u0101js par t\u0101m jau zina. Un, protams, es necen\u0161os neko reklam\u0113t.<\/p>\n<h2>Datu glab\u0101\u0161anas sl\u0101\u0146o\u0161ana. FAST VP m\u0113r\u0137i un uzdevumi<\/h2>\n<p>\nFAST VP tiek at\u0161ifr\u0113ts k\u0101 Fully Automated Storage Tiering for Virtual Pool. Sare\u017e\u0123\u012bti? N\u0113, tagad noskaidrosim. Sl\u0101\u0146o\u0161ana \u2013 tas ir datu glab\u0101\u0161anas organiz\u0101cijas veids, kur\u0101 tiek izmantoti vair\u0101ki l\u012bme\u0146i (tiers), kur \u0161ie dati tiek glab\u0101ti. Katram ir savas \u012bpa\u0161\u012bbas. Visimportant\u0101k\u0101s: veiktsp\u0113ja, apjoms un cenas par inform\u0101cijas vien\u012bbas glab\u0101\u0161anu. Protams, starp t\u0101m ir savstarp\u0113ja saist\u012bba.<\/p>\n<p>Svar\u012bga sl\u0101\u0146o\u0161anas iez\u012bme ir t\u0101, ka piek\u013cuve datiem tiek nodro\u0161in\u0101ta vienveid\u012bgi neatkar\u012bgi no t\u0101, kur\u0101 glab\u0101\u0161anas l\u012bmen\u012b tie \u0161obr\u012bd atrodas, un p\u016bla lielums ir vien\u0101ds ar resursu, kas taj\u0101 ietilpst, kop\u0113jo izm\u0113ru. \u0160eit sl\u0113pjas at\u0161\u0137ir\u012bbas no ke\u0161atmi\u0146as: ke\u0161atmi\u0146as lielums nepievienojas kop\u0113jam resursu apjomam (\u0161aj\u0101 gad\u012bjum\u0101 p\u016blam), un ke\u0161atmi\u0146as dati dubl\u0113 jebkuru galveno nes\u0113ju datu fragmentu (vai tiks dubl\u0113ti, ja ke\u0161atmi\u0146as dati v\u0113l nav ierakst\u012bti). T\u0101pat datu sadal\u012bjums pa l\u012bme\u0146iem lietot\u0101jam nav redzams. Tas noz\u012bm\u0113, ka vi\u0146\u0161 neredz, kuri tie\u0161i dati atrodas katr\u0101 l\u012bmen\u012b, kaut ar\u012b var ietekm\u0113t to netie\u0161i, nosakot politikas (par t\u0101m v\u0113l\u0101k).<\/p>\n<p>Tagad apl\u016bkosim glab\u0101\u0161anas sl\u0101\u0146o\u0161anas \u012bsteno\u0161anas iez\u012bmes Unity. Unity izdala 3 l\u012bme\u0146us, vai tierus:<\/p>\n<ul>\n<li>Ekstrem\u0101la veiktsp\u0113ja (SSD)<\/li>\n<li>Veiktsp\u0113ja (SAS HDD 10k\/15k RPM)<\/li>\n<li>Jauda (NL-SAS HDD 7200 RPM)<\/li>\n<\/ul>\n<p>\nTie ir sak\u0101rtoti p\u0113c veiktsp\u0113jas un cenas samazin\u0101\u0161an\u0101s k\u0101rt\u012bb\u0101. Extreme performance ietver tikai cietvielu diskus (SSD). Divos citos l\u012bme\u0146os ir magn\u0113tiskie diski, kuru at\u0161\u0137ir\u012bbas ir grie\u0161an\u0101s \u0101trum\u0101 un attiec\u012bgi veiktsp\u0113j\u0101.<\/p>\n<p>Inform\u0101cijas nes\u0113ji no viena l\u012bme\u0146a un viena izm\u0113ra apvienojas RAID mas\u012bv\u0101, veidojot RAID grupu (RAID group, \u012bsi \u2013 RG); par pieejamajiem un ieteicamajiem RAID l\u012bme\u0146iem var izlas\u012bt ofici\u0101laj\u0101 dokument\u0101cij\u0101. No RAID grup\u0101m, kas veidotas no viena vai vair\u0101kiem l\u012bme\u0146iem, veidojas datu glab\u0101\u0161anas baseini (Storage pool), no kuriem p\u0113c tam tiek sadal\u012bta br\u012bv\u0101 vieta. Un no baseina tiek pie\u0161\u0137irta vieta failu sist\u0113m\u0101m un LUN'iem.<\/p>\n<p><img decoding=\"async\" alt=\"FAST VP Unity uzglab\u0101\u0161an\u0101: k\u0101 tas darbojas\" src=\"\/wp-content\/uploads\/2020\/03\/00591e7155982ba216b490d3d7214f4c.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h2>K\u0101p\u0113c man nepiecie\u0161ams tiering?<\/h2>\n<p>\n\u012asum\u0101 un abstrakti: <i>lai sasniegtu lab\u0101kus rezult\u0101tus, izmantojot minim\u0101los resursus.<\/i> Ja run\u0101jam konkr\u0113t\u0101k, tad rezult\u0101ts parasti tiek saprasts k\u0101 S\u0425D kop\u0113j\u0101s \u012bpa\u0161\u012bbas \u2013 \u0101trums un piek\u013cuves laiks, glab\u0101\u0161anas izmaksas un citas. Minim\u0101lie resursi noz\u012bm\u0113 vismaz\u0101kos izdevumus: naudu, ener\u0123iju un t\u0101 t\u0101l\u0101k. FAST VP tie\u0161i realiz\u0113 datu p\u0101rdal\u012b\u0161anas meh\u0101nismus pa da\u017e\u0101diem l\u012bme\u0146iem S\u0425D Unity\/Unity XT. Ja j\u016bs man ticat, varat izlaist n\u0101kamo rindkopu. P\u0101r\u0113jiem past\u0101st\u012b\u0161u nedaudz s\u012bk\u0101k.<\/p>\n<p>Pareiza datu sadale pa glab\u0101\u0161anas l\u012bme\u0146iem \u013cauj ietaup\u012bt uz vis\u0101m S\u0425D izmaks\u0101m, upur\u0113jot piek\u013cuves \u0101trumu noteiktai reti izmantotai inform\u0101cijai, un uzlabot veiktsp\u0113ju, p\u0101rvietojot bie\u017ei izmantotos datus \u0101tr\u0101kajos nes\u0113jos. \u0160eit k\u0101ds var iebilst, ka ar\u012b bez tiering\u2019a norm\u0101ls administrators zina, kur ievietot k\u0101dus datus, k\u0101das v\u0113lamas \u012bpa\u0161\u012bbas S\u0425D atbilst vi\u0146a uzdevumam utt. Neap\u0161aub\u0101mi, tas t\u0101 ir, bet datu sadale \"roku darbu\" ir saist\u012bta ar saviem tr\u016bkumiem:<\/p>\n<ul>\n<li>prasa administratora laiku un uzman\u012bbu; <\/li>\n<li>ne vienm\u0113r izdev\u012bgs \"p\u0101rveidot\" S\u0425D resursus p\u0113c main\u012btajiem apst\u0101k\u013ciem;<\/li>\n<li>izz\u016bd svar\u012bga priek\u0161roc\u012bba: vienot\u0101 piek\u013cuve resursiem, kas atrodas uz da\u017e\u0101diem glab\u0101\u0161anas l\u012bme\u0146iem. <\/li>\n<\/ul>\n<p>\nLai storage administratori maz\u0101k uztraucas par darba dro\u0161\u012bbu, pievieno\u0161u, ka resursu pareiza pl\u0101no\u0161ana ir nepiecie\u0161ama ar\u012b \u0161eit. Tagad, kad tieringa uzdevumi ir \u012bsi izkl\u0101st\u012bti, apl\u016bkosim, ko no FAST VP var gaid\u012bt. \u0160eit ir \u012bstais br\u012bdis atgriezties pie defin\u012bcijas. Pirmie divi v\u0101rdi \u2013 Fully Automated \u2013 tie\u0161i tulkojas k\u0101 \u201epiln\u012bb\u0101 automatiz\u0113ts\u201d un noz\u012bm\u0113, ka sadal\u012bjums p\u0113c l\u012bme\u0146iem notiek autom\u0101tiski. Nu, bet Virtual Pool \u2013 tas ir datu pools, kur\u0101 ietilpst resursi no da\u017e\u0101diem uzglab\u0101\u0161anas l\u012bme\u0146iem. L\u016bk, k\u0101 tas izskat\u0101s:<\/p>\n<p><img decoding=\"async\" alt=\"FAST VP Unity uzglab\u0101\u0161an\u0101: k\u0101 tas darbojas\" src=\"\/wp-content\/uploads\/2020\/03\/75259df2b7f65ad9707c1199dd88f7f6.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nLai \u0101tri izsac\u012btu, FAST VP p\u0101rvieto datus tikai viena pool iek\u0161ien\u0113, nevis starp vair\u0101k\u0101m pool\u0101m. <\/p>\n<h2>FAST VP risin\u0101m\u0101s probl\u0113mas<\/h2>\n<p>\nVispirms run\u0101sim abstrakti. Mums ir pool un k\u0101ds meh\u0101nisms, kas var p\u0101rdal\u012bt datus \u0161\u012b pool iek\u0161ien\u0113. Atceroties, ka m\u016bsu uzdevums ir maksim\u0101l\u0101s veiktsp\u0113jas sasnieg\u0161ana, uzdosim jaut\u0101jumu: k\u0101das metodes to var sasniegt? To var b\u016bt vair\u0101kas, un \u0161eit FAST VP pied\u0101v\u0101 lietot\u0101jam vair\u0101k nek\u0101 tikai storage tiering. L\u016bk, k\u0101 FAST VP var palielin\u0101t pool veiktsp\u0113ju:<\/p>\n<ul>\n<li>Datu sadal\u012b\u0161ana pa da\u017e\u0101diem disku veidiem, l\u012bme\u0146iem<\/li>\n<li>Datu sadal\u012b\u0161ana starp viena veida diskiem<\/li>\n<li>Datu sadal\u012b\u0161ana, papla\u0161inot pool<\/li>\n<\/ul>\n<p>\nPirms apspriest, k\u0101 \u0161os uzdevumus risina, mums j\u0101zina da\u017ei nepiecie\u0161amie fakti par FAST VP darb\u012bbu. FAST VP darbojas ar noteikta lieluma blokiem \u2013 256 megabaitiem. Tas ir minim\u0101lais nep\u0101rtrauktais \u201egabals\u201d datu, kas var tikt p\u0101rvietots. Dokument\u0101cij\u0101 to sauc tie\u0161i t\u0101 \u2013 slice. FAST VP skat\u012bjum\u0101 visas RAID grupas sast\u0101v no \u0161\u0101du \u201egabalu\u201d kopas. Atbilsto\u0161i tam visa ievades-izvades statistika uzkr\u0101jas \u0161\u0101diem datu blokiem. K\u0101p\u0113c izv\u0113l\u0113ts tie\u0161i \u0161\u0101ds bloka lielums un vai tas tiks samazin\u0101ts? Bloks ir pietiekami liels, ta\u010du tas ir kompromiss starp datu granulu (maz\u0101ks bloka izm\u0113rs \u2013 prec\u012bz\u0101ks sadal\u012bjums) un eso\u0161aj\u0101m skait\u013co\u0161anas iesp\u0113j\u0101m: \u0146emot v\u0113r\u0101 eso\u0161os stingros ierobe\u017eojumus operat\u012bvaj\u0101 atmi\u0146\u0101 un lielo blokku skaitu, datu statistika var aiz\u0146emt p\u0101r\u0101k daudz, un apr\u0113\u0137inu skaits pieaugs proporcion\u0101li.<\/p>\n<h2>K\u0101 FAST VP izvieto datus pool\u0101. Politikas<\/h2>\n<p>\nLai p\u0101rvald\u012btu datu izvietojumu FAST VP pool\u0101, past\u0101v \u0161\u0101das politikas:<\/p>\n<ul>\n<li>Augst\u0101k\u0101 pieejam\u0101 sl\u0101\u0146a<\/li>\n<li>Autom\u0101tisk\u0101 sl\u0101\u0146o\u0161ana<\/li>\n<li>S\u0101kt augstu, p\u0113c tam autom\u0101tisk\u0101 sl\u0101\u0146o\u0161ana (p\u0113c noklus\u0113juma)<\/li>\n<li>Zem\u0101k\u0101 pieejam\u0101 sl\u0101\u0146a<\/li>\n<\/ul>\n<p>\nT\u0101s ietekm\u0113 gan s\u0101kotn\u0113jo bloka izvietojumu (dati, kas pirmo reizi tiek ierakst\u012bti), gan turpm\u0101ko p\u0101rvieto\u0161anu. Kad dati ir jau izvietoti diskos, p\u0101rvieto\u0161ana tiks inici\u0113ta saska\u0146\u0101 ar grafiku vai manu\u0101li.<\/p>\n<p>Augst\u0101k\u0101 pieejam\u0101 sl\u0101\u0146a cen\u0161as izvietot jaunu bloku visprodukt\u012bv\u0101kaj\u0101 l\u012bmen\u012b. Ja tur nav pietiekami daudz vietas, tad n\u0101kamaj\u0101 produkt\u012bv\u0101kaj\u0101 l\u012bmen\u012b, bet p\u0113c tam dati var tikt p\u0101rvietoti uz produkt\u012bv\u0101ku l\u012bmeni (ja ir vieta vai izspie\u017eot citus datus). Autom\u0101tisk\u0101 sl\u0101\u0146o\u0161ana izvieto jaunus datus da\u017e\u0101dos l\u012bme\u0146os atkar\u012bb\u0101 no pieejam\u0101 vietas izm\u0113ra, un p\u0101rvieto\u0161ana notiek atkar\u012bb\u0101 no piepras\u012bjuma un br\u012bvas vietas. S\u0101kt augstu, p\u0113c tam autom\u0101tisk\u0101 sl\u0101\u0146o\u0161ana ir noklus\u0113juma politika, k\u0101 ar\u012b ieteicam\u0101. S\u0101kotn\u0113j\u0101 izvietojum\u0101 t\u0101 darbojas k\u0101 augst\u0101k\u0101 pieejam\u0101 sl\u0101\u0146a, bet p\u0113c tam notiek datu p\u0101rvieto\u0161ana atkar\u012bb\u0101 no to izmanto\u0161anas statistikas. Zem\u0101k\u0101 pieejam\u0101 sl\u0101\u0146a politika cen\u0161as izvietot datus zem\u0101k produkt\u012bv\u0101 l\u012bmen\u012b. <\/p>\n<p>Datu p\u0101rvieto\u0161ana notiek ar zemu priorit\u0101ti, lai netrauc\u0113tu glab\u0101\u0161anas sist\u0113mas darb\u012bbu; tom\u0113r ir iestat\u012bjums \"Datu p\u0101rvieto\u0161anas \u0101trums\", kas maina priorit\u0101ti. \u0160eit ir iez\u012bme: ne visi datu bloki ir ar vien\u0101du p\u0101rvieto\u0161anas sec\u012bbu. Piem\u0113ram, bloki, kas mar\u0137\u0113ti k\u0101 metadati, tiks p\u0101rvietoti uz \u0101tr\u0101ku l\u012bmeni vispirms. Metadati ir, ja var teikt, \"dati par datiem\", papildinform\u0101cija, kas nav lietot\u0101ja dati, bet saglab\u0101 to aprakstu. Piem\u0113ram, inform\u0101cija failu sist\u0113m\u0101 par to, kur\u0101 blok\u0101 atrodas konkr\u0113ts fails. T\u0101tad piek\u013cuves \u0101trums datiem ir atkar\u012bgs no piek\u013cuves \u0101truma metadatiem. \u0145emot v\u0113r\u0101, ka metadati parasti ir daudz maz\u0101ki, ieguvums no to p\u0101rvieto\u0161anas uz produkt\u012bv\u0101kiem diskdzi\u0146iem tiek sagaid\u012bts liel\u0101ks.<\/p>\n<h2>Kriteriji, ko Fast VP izmanto darb\u012bb\u0101<\/h2>\n<p>\nGalvenais krit\u0113rijs katram blokam, ja \u013coti rupji, ir datu \"piepras\u012bjuma\" raksturojums, kas atkar\u012bgs no las\u012b\u0161anas un rakst\u012b\u0161anas oper\u0101ciju skaita fragment\u0101. \u0160o raksturojumu m\u0113s sauc\u0101m par \"Temperat\u016bru\". Ir piepras\u012bti (siltie) dati, kuri ir \"karst\u0101ki\" par nepiekristiem. Tas tiek apr\u0113\u0137in\u0101ts periodiski, p\u0113c noklus\u0113juma ar stundu interv\u0101lu. <\/p>\n<p>Temperat\u016bras apr\u0113\u0137ina funkcijai ir \u0161\u0101das \u012bpa\u0161\u012bbas:<\/p>\n<ul>\n<li>Ja nav ievades-izejas, dati laika gait\u0101 \"atdziest\".<\/li>\n<li>Pie vair\u0101k vai maz\u0101k vien\u0101das slodzes laika gait\u0101 temperat\u016bra vispirms pieaug, un p\u0113c tam stabiliz\u0113jas noteikt\u0101 diapazon\u0101.<\/li>\n<\/ul>\n<p>\nT\u0101l\u0101k tiek \u0146emtas v\u0113r\u0101 iepriek\u0161 aprakst\u012bt\u0101s politikas un br\u012bv\u0101 vieta katr\u0101 sl\u0101n\u012b. Piem\u0113ram, ilustr\u0101cijai es snieg\u0161u att\u0113lu no dokument\u0101cijas. \u0160eit sarkanas, dzeltenas un zilas kr\u0101sas att\u0113lo augstas, vid\u0113jas un zemas temperat\u016bras blokiem attiec\u012bgi.<\/p>\n<p><img decoding=\"async\" alt=\"FAST VP Unity uzglab\u0101\u0161an\u0101: k\u0101 tas darbojas\" src=\"\/wp-content\/uploads\/2020\/03\/4815ae20d2e33a8f7f47279da0965ae0.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nBet atgriez\u012bsimies pie uzdevumiem. T\u0101tad, varam s\u0101kt izskat\u012bt, ko dar\u0101m, lai atrisin\u0101tu FAST VP uzdevumus.<\/p>\n<h4>A. Datu sadale pa da\u017e\u0101diem disku veidiem, l\u012bme\u0146iem<\/h4>\n<p>\nPats par sevi tas ir galvenais FAST VP uzdevums. P\u0101r\u0113jie, k\u0101d\u0101 zi\u0146\u0101, ir atvasin\u0101ti no t\u0101. Atkar\u012bb\u0101 no izv\u0113l\u0113t\u0101s politikas dati tiks sadal\u012bti pa da\u017e\u0101diem glab\u0101\u0161anas l\u012bme\u0146iem. Vispirms tiek \u0146emta v\u0113r\u0101 izvieto\u0161anas politika, tad blokos eso\u0161\u0101 temperat\u016bra un RAID grupu izm\u0113rs\/\u0101trums. <\/p>\n<p>Attiec\u012bb\u0101 uz politik\u0101m Highest\/Lowest Available Tier viss ir diezgan vienk\u0101r\u0161i. P\u0101r\u0113j\u0101m div\u0101m situ\u0101cija ir \u0161\u0101da. Dati tiek sadal\u012bti pa da\u017e\u0101diem l\u012bme\u0146iem, \u0146emot v\u0113r\u0101 RAID grupu izm\u0113ru un veiktsp\u0113ju: t\u0101, lai kop\u0113j\u0101 blokos eso\u0161\u0101s \"temperat\u016bras\" attiec\u012bba pret katras RAID grupas \"nosac\u012bto maksim\u0101lo veiktsp\u0113ju\" b\u016btu aptuveni vien\u0101da. T\u0101d\u0113j\u0101di slodze tiek sadal\u012bta vair\u0101k vai maz\u0101k vienm\u0113r\u012bgi. Vair\u0101k piepras\u012btie dati p\u0101rvietojas uz \u0101tr\u0101kiem nes\u0113jiem, reti izmantotie \u2013 uz l\u0113n\u0101kiem. Ide\u0101l\u0101 gad\u012bjum\u0101 sadal\u012bjumam vajadz\u0113tu b\u016bt aptuveni \u0161\u0101dam: <\/p>\n<p><img decoding=\"async\" alt=\"FAST VP Unity uzglab\u0101\u0161an\u0101: k\u0101 tas darbojas\" src=\"\/wp-content\/uploads\/2020\/03\/08ecbdc3dbf0409ba67eaf51eed24745.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h4>B. Datu sadale starp viena veida diskiem<\/h4>\n<p>\nAtcerieties, s\u0101kum\u0101 es rakst\u012bju, ka inform\u0101cijas nes\u0113ji no <b>viena vai vair\u0101kiem<\/b> Cik l\u012bme\u0146i tiek apvienoti vien\u0101 grup\u0101? Ja ir viena l\u012bme\u0146a FAST VP, tam ar\u012b ir darbs. Lai k\u0101da l\u012bme\u0146a veiktsp\u0113ja b\u016btu maksim\u0101la, v\u0113lams vienm\u0113r\u012bgi sadal\u012bt datus starp diskdzi\u0146iem. Tas, teor\u0113tiski, \u013cautu sasniegt maksim\u0101lo IOPS skaitu. Datus RAID grup\u0101 var uzskat\u012bt par vienm\u0113r\u012bgi sadal\u012btiem pa diskiem, ta\u010du starp RAID grup\u0101m tas ne vienm\u0113r ir t\u0101. Ja ir disbalanss, FAST VP p\u0101rvietos datus starp RAID grup\u0101m proporcion\u0101li to apjomam un 'nosac\u012btai veiktsp\u0113jai' (skaitlisk\u0101 izteiksm\u0113). Lai vizualiz\u0113tu, par\u0101d\u012b\u0161u p\u0101rbalans\u0113\u0161anas sh\u0113mu tr\u012bs RAID grupu vid\u016b:<\/p>\n<p><img decoding=\"async\" alt=\"FAST VP Unity uzglab\u0101\u0161an\u0101: k\u0101 tas darbojas\" src=\"\/wp-content\/uploads\/2020\/03\/df92c278bbc9138beb109de0c05db705.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h4>V. Datu sadal\u012bjums grupas papla\u0161in\u0101\u0161anas laik\u0101<\/h4>\n<p>\n\u0160\u012b uzdevums ir iepriek\u0161\u0113j\u0101 specifisks gad\u012bjums un tiek veikts, kad grup\u0101 pievieno RAID grupu. Lai jaunpie\u0146emta RAID grupa nepaliktu neizmantota, da\u013ca datu tiks p\u0101rvietota uz to, l\u012bdz ar to novadot slodzi vis\u0101s RAID grup\u0101s.<\/p>\n<h2>SSD nodiluma izl\u012bdzin\u0101\u0161ana<\/h2>\n<p>\nIzmantojot FAST VP nodiluma izl\u012bdzin\u0101\u0161anu, var pagarin\u0101t SSD kalpo\u0161anas laiku, kaut ar\u012b \u0161\u012b funkcija nav tie\u0161i saist\u012bta ar Storage Tiering. \u0145emot v\u0113r\u0101, ka temperat\u016bras dati jau ir pieejami, rakst\u012b\u0161anas oper\u0101ciju skaits ar\u012b tiek \u0146emts v\u0113r\u0101, un m\u0113s sp\u0113jam p\u0101rvietot datu blokos, b\u016btu lo\u0123iski, ka FAST VP risina ar\u012b \u0161o uzdevumu.<\/p>\n<p>Ja rakst\u012b\u0161anas oper\u0101ciju skaits uz vienu RAID grupu iev\u0113rojami p\u0101rsniedz skaitu pret\u0113jo, tad FAST VP p\u0101rvietos datus atbilsto\u0161i rakst\u012b\u0161anas oper\u0101ciju skaitam. No vienas puses, tas samazina slodzi un saglab\u0101 resursus vieniem diskiem, no otras puses, palielina 'darbu' maz\u0101k noslogotiem diskiem, paaugstinot visp\u0101r\u0113jo veiktsp\u0113ju.<\/p>\n<p>T\u0101d\u0113j\u0101di FAST VP uz\u0146emas tradicion\u0101l\u0101s Storage Tiering uzdevumus un dara v\u0113l kaut ko papildus. Visi \u0161ie aspekti \u013cauj diezgan efekt\u012bvi glab\u0101t datus Unity ra\u017eot\u0101ja uzglab\u0101\u0161anas sist\u0113m\u0101s.<\/p>\n<h2>Da\u017ei ieteikumi<\/h2>\n<p><\/p>\n<ol>\n<li>Nepalaidiet gar\u0101m dokument\u0101cijas las\u012b\u0161anu. Ir lab\u0101k\u0101s prakses, un t\u0101s darbojas diezgan labi. Ja t\u0101m sekojat, nopietnas probl\u0113mas parasti nerodas. P\u0101r\u0113jie ieteikumi galvenok\u0101rt atk\u0101rto vai papildina t\u0101s.<\/li>\n<li>Ja, ja esat iestat\u012bjis un aktiviz\u0113jis FAST VP, vislab\u0101k to atst\u0101t iesl\u0113gtu. Lai tas sadala datus tam paredz\u0113taj\u0101 laik\u0101 un pak\u0101peniski, nevis reizi gad\u0101, radot b\u016btisku ietekmi uz citu uzdevumu veiktsp\u0113ju. \u0160\u0101dos gad\u012bjumos datu p\u0101rk\u0101rto\u0161ana var ilgt ilgu laiku.<\/li>\n<li>R\u016bp\u012bgi izv\u0113lieties p\u0101rvieto\u0161an\u0101s logu. Lai gan tas var \u0161\u0137ist ac\u012bmredzami, cen\u0161aties izv\u0113l\u0113ties laiku ar vismaz\u0101ko slodzi uz Unity un atv\u0113l\u0113t pietiekami ilgu laiku.<\/li>\n<li>Pl\u0101nojiet uzglab\u0101\u0161anas papla\u0161in\u0101\u0161anu, veiciet to laik\u0101. T\u0101 ir visp\u0101r\u0113ja rekomend\u0101cija, kas ir svar\u012bga ar\u012b FAST VP. Ja pieejamais br\u012bvais vietas apjoms ir \u013coti mazs, datu p\u0101rvieto\u0161an\u0101s pal\u0113nin\u0101s vai k\u013c\u016bs neiesp\u0113jama. \u012apa\u0161i, ja esat ignor\u0113ju\u0161i 2. punktu.<\/li>\n<li>Papla\u0161inot pool ar iesl\u0113gtu FAST VP, nevajadz\u0113tu s\u0101kt ar visl\u0113n\u0101kajiem diskiem. Tas noz\u012bm\u0113, ka vai nu pievienojam visas pl\u0101not\u0101s RAID grupas uzreiz, vai vispirms pievienojam vis\u0101tr\u0101kos diskus. \u0160aj\u0101 gad\u012bjum\u0101 datu p\u0101rdal\u012b\u0161ana jaunajos \"\u0101trajos\" diskos palielin\u0101s kop\u0113jo pool \u0101trumu. Pret\u0113j\u0101 gad\u012bjum\u0101, s\u0101kot ar \"l\u0113najiem\" diskiem, var rasties \u013coti nepat\u012bkama situ\u0101cija. Vispirms notiks datu p\u0101rvieto\u0161ana uz jaunajiem, sal\u012bdzino\u0161i l\u0113najiem diskiem, bet v\u0113l\u0101k, pievienojot \u0101tr\u0101kus, notiks p\u0101rvieto\u0161ana pret\u0113j\u0101 virzien\u0101. \u0160eit ir nianses, kas saist\u012btas ar da\u017e\u0101d\u0101m FAST VP politik\u0101m, bet visp\u0101r\u0113j\u0101 gad\u012bjum\u0101 \u0161\u0101da situ\u0101cija ir iesp\u0113jama.<\/li>\n<\/ol>\n<p>\nJa j\u016bs interes\u0113 \u0161is produkts, varat izm\u0113\u0123in\u0101t Unity bez maksas, lejupiel\u0101d\u0113jot Unity VSA virtu\u0101lo ier\u012bci.<\/p>\n<p><img decoding=\"async\" alt=\"FAST VP Unity uzglab\u0101\u0161an\u0101: k\u0101 tas darbojas\" src=\"\/wp-content\/uploads\/2020\/03\/a6ce6116c4ba028b14447157a270e5d2.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nNosl\u0113gum\u0101 dalos ar da\u017e\u0101m noder\u012bg\u0101m sait\u0113m:<\/p>\n<ul>\n<li>Lappuse <noindex><a rel=\"nofollow\" href=\"https:\/\/www.delltechnologies.com\/ru-ru\/storage\/unity.htm\">Unity uzglab\u0101\u0161ana<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/community.emc.com\/docs\/DOC-70939\">Dell EMC Unity: FAST VP darb\u012bbas teorija<\/a><\/noindex> \u2013 \u012bss funkcijas apraksts<\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/www.dellemc.com\/en-us\/collaterals\/unauth\/white-papers\/products\/storage\/h15086-emc-unity-fast-technology-overview.pdf\">Piln\u012bg\u0101ks un detaliz\u0113t\u0101ks apraksts<\/a><\/noindex>, pdf form\u0101t\u0101<\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/www.dellemc.com\/en-us\/products\/trial-software-download\/index.htm\">Unity VSA\/Cloud izdevums<\/a><\/noindex><\/li>\n<\/ul>\n<p><\/p>\n<h2> Secin\u0101jums <\/h2>\n<p>\nEs v\u0113l\u0113tos daudz rakst\u012bt, bet saprotu, ka ne visas deta\u013cas interes\u0113s las\u012bt\u0101ju. Piem\u0113ram, var\u0113tu s\u012bk\u0101k izst\u0101st\u012bt par krit\u0113rijiem, kuriem FAST VP pie\u0146em l\u0113mumu par datu p\u0101rvieto\u0161anu, par ievades-izvades statistikas anal\u012bzes procesiem. Ar\u012b visp\u0101r nav piesk\u0101riena t\u0113mai par <noindex><a rel=\"nofollow\" href=\"https:\/\/www.dellemc.com\/resources\/en-us\/asset\/white-papers\/products\/storage\/h16289-dell_emc_unity-dynamic_pools.pdf\">Dynamic Pools<\/a><\/noindex>, un tas b\u016btu j\u0101apsprie\u017e atsevi\u0161\u0137\u0101 rakst\u0101. Varb\u016bt pat varam spekul\u0113t par \u0161\u012bs tehnolo\u0123ijas att\u012bst\u012bbu. Ceru, ka nebija garlaic\u012bgi un es j\u016bs nenogurdin\u0101ju. L\u012bdz n\u0101kamaj\u0101m tik\u0161an\u0101s reiz\u0113m!<br \/>\n<br \/>Avots: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/dell_technologies\/blog\/493136\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u0435\u0433\u043e\u0434\u043d\u044f \u0440\u0435\u0447\u044c \u043f\u043e\u0439\u0434\u0435\u0442 \u043e\u0431 \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u043e\u0439 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0438, \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u0432 \u0421\u0425\u0414 Unity\/Unity XT, \u2013 FAST VP. \u0415\u0441\u043b\u0438 \u0432\u044b \u0432\u043f\u0435\u0440\u0432\u044b\u0435 \u0443\u0441\u043b\u044b\u0448\u0430\u043b\u0438 \u043e Unity, \u0442\u043e \u043f\u043e \u0441\u0441\u044b\u043b\u043a\u0435 \u0432 \u043a\u043e\u043d\u0446\u0435 \u0441\u0442\u0430\u0442\u044c\u0438 \u043c\u043e\u0436\u043d\u043e \u043e\u0437\u043d\u0430\u043a\u043e\u043c\u0438\u0442\u044c\u0441\u044f \u0441 \u0445\u0430\u0440\u0430\u043a\u0442\u0435\u0440\u0438\u0441\u0442\u0438\u043a\u0430\u043c\u0438 \u0441\u0438\u0441\u0442\u0435\u043c\u044b. \u0412 \u043f\u0440\u043e\u0435\u043a\u0442\u043d\u043e\u0439 \u043a\u043e\u043c\u0430\u043d\u0434\u0435 Dell EMC \u044f \u0440\u0430\u0431\u043e\u0442\u0430\u043b \u043d\u0430\u0434 FAST VP \u0431\u043e\u043b\u0435\u0435 \u0433\u043e\u0434\u0430. \u0421\u0435\u0433\u043e\u0434\u043d\u044f \u0445\u043e\u0447\u0443 \u0440\u0430\u0441\u0441\u043a\u0430\u0437\u0430\u0442\u044c \u043e\u0431 \u044d\u0442\u043e\u0439 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0438 \u043f\u043e\u0434\u0440\u043e\u0431\u043d\u0435\u0435 \u0438 \u0440\u0430\u0441\u043a\u0440\u044b\u0442\u044c \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0434\u0435\u0442\u0430\u043b\u0438 \u0435\u0435 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":75578,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-75577","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.5 - 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Ja par Unity dzirdat pirmoreiz, pievienotaj\u0101 sait\u0113 raksta beig\u0101s varat iepaz\u012bties ar sist\u0113mas specifik\u0101cij\u0101m.","canonical_url":"https:\/\/prohoster.info\/lv\/blog\/administrirovanie\/fast-vp-v-shd-unity-kak-eto-rabotaet","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"lv_LV","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47FAST VP \u0432 \u0421\u0425\u0414 Unity: \u043a\u0430\u043a \u044d\u0442\u043e \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442 | ProHoster","og:description":"\u0421\u0435\u0433\u043e\u0434\u043d\u044f \u0440\u0435\u0447\u044c 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