12.května 2007

PC a internet Windows Vista: Volume ShadowCopy Service a System Restore Point

Windows Vista (a i Windows XP) používají tzv. Bod obnovy systému (System Restore Point), který slouží pro obnovu systému například po instalaci nevhodného ovladače nebo celého vadného SW. Funguje to zjednodušeně tak, že před instalací tohoto SW si Windows uloží na disk jakýsi snímek disku (snapshot) a v případě, že se chcete vrátit do předchozího stavu,t ak jej zase zpět nahrají na disk a umažou nově nainstalovanou aplikaci.

Takovýto snímek disku dělají Windows Vista autoaticky při instalaci/deinstalaci nových programů a driverů a také je můžete nechat udělat ručně. O vytváření těchto snapshotů se stará služba Volume ShadowCopy Service. Umístění a vytvoření těchto restore pointů se provádí ve Vlastnostech počítače (Properties) v záložce System Protection.

System Restore Point

Tyto snapshoty potom zabíraji nemalé místo na zvoleném disku. Upravovat velikost místa, které může být využito pro tyto snapshoty nelze z žádného dialogu, ale pomocí utility VSSADMIN z příkazové řádky.

Zobrazit, kolik místa na kterých discích zabírá Volume ShadowCopy je možno takto:

vssadmin List ShadowStorage

Zobrazit, jaké máme uložené snapshoty je možno takto:

vssadmin List Shadows

Nastavit velikost místa lze například takto.

vssadmin Resize ShadowStorage /For=C: /On=D: /MaxSize=900MB

Velmi podstatnou novinkou ve Windows Vista oproti Windows XP je, že umí vrátit systém do předchozího stavu nejen z funkčních Windows, ale také z tzv. Recovery Console, kterážto je ve Windows Vista pojmenována Windwos RE.

Hledáte-li správce sítě nebo prostě nekoho kdo umí spravovat servery, hledejte na www.petr-hladis.cz

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