{"id":80184,"date":"2020-05-04T07:42:02","date_gmt":"2020-05-04T05:42:02","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vyyavlena-nesovmestimost-smr-diskov-wd-s-zfs-kotoraya-mozhet-privesti-k-potere-dannyh"},"modified":"2020-05-04T07:42:02","modified_gmt":"2020-05-04T05:42:02","slug":"vyyavlena-nesovmestimost-smr-diskov-wd-s-zfs-kotoraya-mozhet-privesti-k-potere-dannyh","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/news\/vyyavlena-nesovmestimost-smr-diskov-wd-s-zfs-kotoraya-mozhet-privesti-k-potere-dannyh","title":{"rendered":"\u00cbsht\u00eb zbuluar papajtueshm\u00ebri e disqeve SMR t\u00eb WD me ZFS, e cila mund t\u00eb \u00e7oj\u00eb n\u00eb humbje t\u00eb t\u00eb dh\u00ebnave","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Kompania iXsystems, e cila zhvillon projektin FreeNAS, ka paralajm\u00ebruar<\/a><\/noindex> p\u00ebr probleme t\u00eb r\u00ebnda me p\u00ebrputhshm\u00ebrin\u00eb e ZFS me disa disqe t\u00eb rinj WD Red, t\u00eb prodhuar nga kompania Western Digital duke p\u00ebrdorur teknologjin\u00eb SMR (Shingled Magnetic Recording, regjistrim magnetik me \u00e7ati). N\u00eb skenarin m\u00eb t\u00eb keq, p\u00ebrdorimi i ZFS n\u00eb disqe problematike mund t\u00eb \u00e7oj\u00eb n\u00eb humbje t\u00eb t\u00eb dh\u00ebnave. <\/p>\n

Problemet shfaqen me disqet WD Red me kapacitet nga 2 deri n\u00eb 6 TB, t\u00eb prodhuar q\u00eb nga viti 2018, t\u00eb cilat p\u00ebrdorin gjat\u00eb regjistrimit teknologjin\u00eb DM-SMR<\/a><\/noindex> (Device-Managed Shingled Magnetic Recording) dhe sh\u00ebnohen<\/a><\/noindex> me etiket\u00ebn EFAX (p\u00ebr disqet CMR p\u00ebrdoret identifikuesi EFRX). Western Digital ka theksuar<\/a><\/noindex> n\u00eb blogun e saj se disqet SMR WD Red jan\u00eb t\u00eb destinuara p\u00ebr p\u00ebrdorim n\u00eb NAS p\u00ebr sht\u00ebpi dhe biznese t\u00eb vogla, ku instalohet jo m\u00eb shum\u00eb se 8 disqe dhe ngarkesa \u00ebsht\u00eb deri n\u00eb 180 TB n\u00eb vit, e karakterizuar p\u00ebr backup dhe shk\u00ebmbimin e skedar\u00ebve. Brezi i m\u00ebparsh\u00ebm i disqeve WD Red dhe modelet WD Red me kapacitet nga 8 TB, si dhe disqet e linjave WD Red Pro, WD Gold dhe WD Ultrastar, prodhohen akoma mbi baz\u00ebn e teknologjis\u00eb CMR (Conventional Magnetic Recording) dhe p\u00ebrdorimi i tyre nuk shkakton probleme me ZFS.<\/p>\n

Thelbi i teknologjis\u00eb SMR \u00ebsht\u00eb p\u00ebrdorimi n\u00eb disqe t\u00eb nj\u00eb koke magnetike, gjer\u00ebsia e s\u00eb cil\u00ebs \u00ebsht\u00eb m\u00eb e madhe se gjer\u00ebsia e nj\u00eb piste, e cila \u00e7on n\u00eb regjistrim me mbivendosje t\u00eb pjesshme t\u00eb pist\u00ebs fqinj\u00eb, dmth \u00e7do regjistrim i ri e b\u00ebn t\u00eb nevojshme regjistrimin e gjith\u00eb grupit t\u00eb pistave. P\u00ebr t\u00eb optimizuar pun\u00ebn me disqe t\u00eb tilla p\u00ebrdoret zonimi<\/a><\/noindex> \u2014 Hap\u00ebsira e ruajtjes ndahet n\u00eb zona, q\u00eb p\u00ebrb\u00ebjn\u00eb grupe blokesh ose sektor\u00ebsh, n\u00eb t\u00eb cilat lejohet vet\u00ebm shtimi i t\u00eb dh\u00ebnave n\u00eb m\u00ebnyr\u00eb t\u00eb sekuenc\u00ebs duke p\u00ebrdit\u00ebsuar t\u00eb gjith\u00eb grupin e bllokimeve nj\u00ebher\u00ebsh. N\u00eb m\u00ebnyr\u00eb t\u00eb p\u00ebrgjithshme, disk\u00ebt SMR kan\u00eb nj\u00eb efikasitet m\u00eb t\u00eb madh n\u00eb konsumimin e energjis\u00eb, jan\u00eb m\u00eb t\u00eb p\u00ebrballuesh\u00ebm dhe tregojn\u00eb nj\u00eb p\u00ebrmir\u00ebsim n\u00eb performanc\u00eb gjat\u00eb shkrimit sekuencial t\u00eb t\u00eb dh\u00ebnave, por mbeten pas kur b\u00ebhet fjal\u00eb p\u00ebr operacione t\u00eb shkrimit t\u00eb rast\u00ebsish\u00ebm, p\u00ebrfshir\u00eb operacione t\u00eb tilla si rinovimi i grupeve t\u00eb ruajtjes. <\/p>\n

DM-SMR n\u00ebnkupton se operacionet e zonimit dhe shp\u00ebrndarjes s\u00eb t\u00eb dh\u00ebnave menaxhohen nga kontrolluesi i diskut dhe p\u00ebr sistemin ky disk duket si nj\u00eb disk i zakonsh\u00ebm mekanik, q\u00eb nuk k\u00ebrkon manipulime t\u00eb ve\u00e7anta. N\u00eb DM-SMR aplikohet adresimi logjik indirekt i blloqeve (LBA, Addressimi Logjik i Blloqeve), i ngjash\u00ebm me adresimin logjik n\u00eb SSD. Pas \u00e7do operacioni t\u00eb rast\u00ebsish\u00ebm t\u00eb shkrimit k\u00ebrkohet nj\u00eb operacion n\u00eb sfond p\u00ebr mbledhjen e mbeturinave, q\u00eb \u00e7on n\u00eb fluktime t\u00eb paparashikueshme n\u00eb performanc\u00eb. Sistemi mund t\u00eb p\u00ebrpiqet t\u00eb aplikoj\u00eb optimizime p\u00ebr k\u00ebto disqe, duke menduar se t\u00eb dh\u00ebnat do t\u00eb shkruhen n\u00eb sektorin e caktuar, por informacionet e ofruara nga kontrolluesi p\u00ebrcaktojn\u00eb vet\u00ebm struktur\u00ebn logjike dhe n\u00eb t\u00eb v\u00ebrtet\u00eb gjat\u00eb shp\u00ebrndarjes s\u00eb t\u00eb dh\u00ebnave kontrolluesi do t\u00eb p\u00ebrdor\u00eb algoritmet e tij, duke marr\u00eb parasysh t\u00eb dh\u00ebnat e vendosura m\u00eb par\u00eb. Prandaj, para se t\u00eb p\u00ebrdoren disqet DM-SMR n\u00eb nj\u00eb grup ZFS, rekomandohet t\u00eb b\u00ebhet nj\u00eb operacion p\u00ebr zerimin e tyre me rikthim n\u00eb gjendjen fillestare.<\/p>\n

P\u00ebr shqyrtimin e kushteve, n\u00eb t\u00eb cilat ndodhin problemet, \u00ebsht\u00eb angazhuar kompania Western Digital, e cila s\u00eb bashku me iXsystems p\u00ebrpiqet t\u00eb gjej\u00eb nj\u00eb zgjidhje dhe t\u00eb p\u00ebrgatis\u00eb nj\u00eb p\u00ebrdit\u00ebsim t\u00eb firmware-it. Deri n\u00eb publikimin e p\u00ebrfundimeve p\u00ebr zgjidhjen e problemeve, disqet me firmware t\u00eb ri pritet t\u00eb testohen n\u00eb ruajtje me ngarkes\u00eb t\u00eb lart\u00eb me FreeNAS 11.3 dhe TrueNAS CORE 12.0. Megjithat\u00eb, pohohet se p\u00ebr shkak t\u00eb interpretimeve t\u00eb ndryshme t\u00eb SMR nga prodhues t\u00eb ndrysh\u00ebm, n\u00eb disa lloje disqesh SMR nuk ndodhin probleme me ZFS, por testimi i b\u00ebr\u00eb nga iXsystems \u00ebsht\u00eb p\u00ebrqendruar vet\u00ebm n\u00eb verifikimin e disqeve WD Red bazuar n\u00eb teknologjin\u00eb DM-SMR, dhe p\u00ebr disqet SMR t\u00eb prodhuesve t\u00eb tjer\u00eb<\/a><\/noindex> k\u00ebrkohet hulumtim shtes\u00eb.<\/p>\n

Aktualisht, problemet me ZFS jan\u00eb provuar dhe rip\u00ebrs\u00ebritur n\u00eb teste p\u00ebr t\u00eb pakt\u00ebn disqet WD Red 4TB WD40EFAX me firmware 82.00A82 dhe shfaqen<\/a><\/noindex> duke kaluar n\u00eb gjendje defekti n\u00ebn ngarkes\u00eb t\u00eb lart\u00eb shkruese, p\u00ebr shembull, gjat\u00eb rinovimit t\u00eb ruajtjes pas shtimit t\u00eb nj\u00eb disku t\u00eb ri n\u00eb grup (resilvering). Supozohet se problemi shfaqet edhe n\u00eb modele t\u00eb tjera WD Red me t\u00eb nj\u00ebjt\u00ebn firmware. N\u00eb rast t\u00eb shfaqjes s\u00eb problemit, disku fillon t\u00eb kthej\u00eb kodin e gabimit IDNF (Sector ID Not Found) dhe b\u00ebhet i pap\u00ebrshtatsh\u00ebm p\u00ebr p\u00ebrdorim, \u00e7ka trajtohet n\u00eb ZFS si defekt disku dhe mund t\u00eb \u00e7oj\u00eb n\u00eb humbjen e t\u00eb dh\u00ebnave q\u00eb ruhen n\u00eb disk. N\u00eb rastin e defektit t\u00eb disa disqeve, t\u00eb dh\u00ebnat n\u00eb vdev ose n\u00eb rezervuar mund t\u00eb humbasin. V\u00ebrehet se defektet e p\u00ebrmendura ndodhin mjaft rrall\u00eb \u2014 nga rreth nj\u00eb mij\u00eb sisteme t\u00eb shitura FreeNAS Mini, t\u00eb cilat ishin t\u00eb pajisura me disqe problematike, problemi \u00ebsht\u00eb shfaqur n\u00eb kushte pune vet\u00ebm nj\u00eb her\u00eb.<\/p>\n

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

Burimi: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f iXsystems, \u0440\u0430\u0437\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u044e\u0449\u0430\u044f \u043f\u0440\u043e\u0435\u043a\u0442 FreeNAS, \u043f\u0440\u0435\u0434\u0443\u043f\u0440\u0435\u0434\u0438\u043b\u0430 \u043e \u0441\u0435\u0440\u044c\u0451\u0437\u043d\u044b\u0445 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430\u0445 \u0441 \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u043e\u0441\u0442\u044c\u044e ZFS \u0441 \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u043c\u0438 \u043d\u043e\u0432\u044b\u043c\u0438 \u0436\u0451\u0441\u0442\u043a\u0438\u043c\u0438 \u0434\u0438\u0441\u043a\u0430\u043c\u0438 WD Red, \u0432\u044b\u043f\u0443\u0441\u043a\u0430\u0435\u043c\u044b\u043c\u0438 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0435\u0439 Western Digital \u0441 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0438 SMR (Shingled Magnetic Recording, \u0447\u0435\u0440\u0435\u043f\u0438\u0447\u043d\u0430\u044f \u043c\u0430\u0433\u043d\u0438\u0442\u043d\u0430\u044f \u0437\u0430\u043f\u0438\u0441\u044c). \u041f\u0440\u0438 \u043d\u0430\u0438\u0445\u0443\u0434\u0448\u0435\u043c \u0441\u0446\u0435\u043d\u0430\u0440\u0438\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 ZFS \u043d\u0430 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u043d\u044b\u0445 \u043d\u0430\u043a\u043e\u043f\u0438\u0442\u0435\u043b\u044f\u0445 \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u043f\u043e\u0442\u0435\u0440\u0435 \u0434\u0430\u043d\u043d\u044b\u0445. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u044b \u0432\u043e\u0437\u043d\u0438\u043a\u0430\u044e\u0442 \u0441 \u0434\u0438\u0441\u043a\u0430\u043c\u0438 WD Red \u0451\u043c\u043a\u043e\u0441\u0442\u044c\u044e \u043e\u0442 2 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-80184","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47\u00cbsht\u00eb identifikuar papajtueshm\u00ebria e disqeve SMR WD me ZFS, e cila mund t\u00eb \u00e7oj\u00eb n\u00eb humbje t\u00eb t\u00eb dh\u00ebnave | ProHoster","description":"Kompania iXsystems, e cila zhvillon projektin FreeNAS, ka paralajm\u00ebruar p\u00ebr probleme serioze 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