{"id":34437,"date":"2019-10-31T21:58:20","date_gmt":"2019-10-31T18:58:20","guid":{"rendered":"https:\/\/prohoster.info\/blog\/glavnye-preimushhestva-zextras-powerstore\/"},"modified":"2019-10-31T21:58:20","modified_gmt":"2019-10-31T18:58:20","slug":"glavnye-preimushhestva-zextras-powerstore","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sl\/blog\/administrirovanie\/glavnye-preimushhestva-zextras-powerstore","title":{"rendered":"Glavne prednosti Zextras PowerStore-a","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Zextras PowerStore je jedno iz najtra\u017eenijih dodataka za Zimbra Collaboration Suite, koji je deo Zextras Suite. Kori\u0161\u0107enje ovog pro\u0161irenja, koje omogu\u0107ava dodavanje hijerarhijskog upravljanja medijima u Zimbra, kao i zna\u010dajno smanjenje prostora na tvrdim diskovima koji zauzimaju korisni\u010dki po\u0161tanski sandu\u010di\u0107i zahvaljuju\u0107i kori\u0161\u0107enju algoritama kompresije i deduplikacije, na kraju dovodi do ozbiljnog smanjenja ukupnih tro\u0161kova posjedovanja cele Zimbra infrastrukture. A kada se Zextras PowerStore koristi u uslovima SaaS provajdera, mo\u017ee se govoriti o ogromnim u\u0161tedama. No, to nije sve mogu\u0107nosti koje ovo pro\u0161irenje mo\u017ee ponuditi Zimbra administratorima. Da bismo saznali \u0161ta jo\u0161 mo\u017ee ponuditi Zextras PowerStore Zimbra administratorima, obratili smo se Luca Arcara<\/b>, vi\u0161em konsultantu za re\u0161enja u Zextras, koji aktivno u\u010destvuje u razvoju Zextras Suite. Podelio je sa nama \u010detiri klju\u010dne mogu\u0107nosti Zextras PowerStore koje \u0107e se svideti svakom Zimbra administratoru.<\/p>\n

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

4. Mogu\u0107nost konfiguracije medija nakon instalacije Zimbre<\/b><\/p>\n

U prethodnom \u010dlanku govorili smo o tome kako optimizovati po\u0161tanske storage-e Zimbre da poka\u017eu \u0161to mogu\u0107u maksimalnu brzinu. Pored toga, \u0161to Zimbra Collaboration Suite Open-Source Edition administrator mora jo\u0161 na samom po\u010detku projektovanja infrastrukture da odlu\u010di o veli\u010dini po\u0161tanskih storage-a, jedno od preporuka je da se pa\u017eljivo odredi broj bajtova za inode, koji se formiraju na hard disku pomo\u0107u alata mke2fs i parametra -i prilikom stvaranja fajl-sistema.<\/p>\n

Me\u0111utim, da bi se ta\u010dno odredila prose\u010dna veli\u010dina poruka na fazi projektovanja, sistem administrator treba imati dar proro\u010danstva. Naravno, takav dar imaju samo neki, a takvi parametri kao prose\u010dan obim poruke i veli\u010dina skladi\u0161ta je ipak bolje re\u0161avati imaju\u0107i statistiku rada Zimbre u 'borbenim' uslovima. <\/p>\n

In this case, the Zimbra administrator can benefit from the Zextras PowerStore extension, which, thanks to its Hierarchical Storage Management capability, allows for the connection of additional storage. This postpones decisions regarding the average message size and storage capacity until comprehensive statistics are available.<\/p>\n

3. The ability to avoid using LVM<\/b><\/p>\n

The Logical Volume Manager, while being an excellent solution that initially appears to be suited for Zimbra's mail storage due to its expansion and snapshot capabilities, has numerous drawbacks. Key among them are the complicated management of volumes compared to standard disks and the high risk of the entire LVM failing if one of the physical disks is damaged, which is quite critical in large-scale Zimbra installations.<\/p>\n

Zextras PowerStore, on the other hand, allows for the abandonment of LVM and enables volume expansion through the connection of standard hard drives. This simplifies storage management for Zimbra administrators, optimizes the backup process, and ultimately makes the entire infrastructure more resilient.<\/p>\n

2. The ability to migrate data to other volumes and storage systems<\/b><\/p>\n

It\u2019s always better to prevent a problem than to deal with its consequences later. This rule certainly applies to situations like hard drive failure, which can lead to complete or partial data loss. Planned replacement of storage media is a common practice among SaaS providers, who prefer to schedule preventative maintenance and alert clients in advance rather than incur losses and damage their reputation due to an unexpectedly failing hard drive.<\/p>\n

Zdi se, da ni ni\u010d preprostej\u0161ega kot prenos podatkov z enega trdega diska na drugega. V obi\u010dajnih pogojih to izvaja orodje dd, ki je del vsake distribucije Linux. Vendar pa ni vse tako enostavno. Poleg podatkov dd skrbno prenese tudi vse nastavitve stare datote\u010dne sistema na novi disk, kar vas prikraj\u0161a za mo\u017enost njihove spremembe. Poleg tega, \u010de so na disk kakorkoli prispeli rootkiti in drugi potencialno nevarni virusi, dd tudi te skrbno prenese na nov trdi disk. Zato je najbolje, da se po\u0161tne predale z enega diska na drugega med na\u010drtovano zamenjavo prenese s pomo\u010djo Zextras PowerStore. Z njegovo uporabo administrator Zimbra pridobi mo\u017enost prenosa na nov disk le najpomembnej\u0161ega - po\u0161tnih predalov in njihove vsebine, pri tem pa dobi svobodo pri nastavitvi datote\u010dnega sistema na njem.<\/p>\n

Prav tako v vsaki visoko obremenjeni infrastrukturi, naj gre za veliko podjetje ali ponudnika SaaS, obstajajo po\u0161tni predali, do katerih je potrebno imeti ves \u010das dostop. To se nana\u0161a na po\u0161tne predale vi\u0161jih managerjev, po\u0161tne predale za obravnavo na\u010drtovanih zahtevkov strank in podobno. Pri uporabi osnovne razli\u010dice je prenos posameznega po\u0161tnega predala iz shrambe, ki je zaprta zaradi vzdr\u017eevanja, na stre\u017enik<\/a>, ki \u0161e naprej deluje, nemogo\u010d. Izogniti se zastoju med vzdr\u017eevanjem po\u0161tne shrambe, v kateri se nahajajo tak\u0161ni predali, je mogo\u010de tudi s pomo\u010djo raz\u0161iritve Zextras PowerStore, ki omogo\u010da prenos posameznih predalov med po\u0161tnimi shrambami, ki se nahajajo v isti infrastrukturi Zimbra. Tako lahko Zextras PowerStore pomaga administratorju Zimbra pove\u010dati varnost in hkrati bistveno zmanj\u0161ati \u010das zastoja pri manipulacijah s trdimi diski.<\/p>\n

Poleg tega lahko Zextras PowerStore pomaga pri re\u0161evanju podatkov z delno po\u0161kodovanega diska. Razvijalci so predvideli mo\u017enost ignoriranja napak pri branju med prenosom po\u0161tnih predalov, zato v nekaterih situacijah, ko je nosilec podatkov \u017ee za\u010del prekrivati z bad-blocki, zahvaljujo\u010d PowerStore ima administrator \u0161e vedno mo\u017enost re\u0161iti ve\u010dji del informacij z njega.<\/p>\n

1. Mo\u017enost povezovanja objektnih shranjevanj<\/b><\/p>\n

Glavna prednost Zextras PowerStore, po mi\u0161ljenju Luce Arcara, je mo\u017enost hitrega povezovanja z infrastrukturo Zimbra za objektne shranjevalnike, kar omogo\u010da skrbniku, da prakti\u010dno takoj dostopa do vseh prednosti uporabe tako obla\u010dnih shranjevalnikov kot tudi lokalno name\u0161\u010denih storitev.<\/p>\n

Glede na to, da mnogi obla\u010dni ponudniki danes nudijo dostop do svojih shranjevalnikov po naro\u010dni\u0161kem modelu, se pred skrbniki Zimbre odpirajo neskon\u010dne mo\u017enosti za rezervne kopije in \u0161iritev svoje infrastrukture, pa tudi za uresni\u010ditev strojne redundantnosti po zelo razumnih cenah.<\/p>\n

Poleg tega mo\u017enost shranjevanja dela podatkov v oblaku ali teritorialno oddaljenih shranjevalnikih pospe\u0161i proces obnove delovanja Zimbre v primeru kakr\u0161nih koli obse\u017enih incidentov, kar znatno pove\u010duje varnost uporabe te re\u0161itve v podjetju.
\n
Izvor: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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