Inhoudsopgave
Waar gebruik je welke RAID?
Ondersteunde RAID-types
| Volumetype | Aantal HHD’s | Volumecapaciteit |
|---|---|---|
| SHR | 2-3 | Geoptimaliseerd door het systeem. |
| ≧4 | ||
| Basic | 1 | 1 x (HDD-grootte) |
| JBOD | ≧1 | Som van alle HDD-groottes |
Wat is een RAID 5?
RAID-5: striping en parity; NAS verdeelt data over de schijven met een ECC. RAID-6: striping & parity; hetzelfde als RAID-5, ECC op alle aangesloten schijven. RAID-10: striping en mirroring; combinatie van snelheid en betrouwbaarheid Merkspecifieke RAID opstellingen.
Welke RAID is het beste?
Voor een extra veilige opslag kies je RAID-1. Deze opstelling maakt automatisch een kopie van je bestand(en) en bewaart deze op één van de andere schijven in de NAS. Zo heb je altijd een back-up van je documenten, in het geval een schijf kapot gaat.
What does the parity bit do in raid?
Parity in RAID 5 involves reserving some space for parity information. Parity data is an additional digit of information that helps you recover lost data. Another way to describe this parity is “even parity”. That means we try to keep the number of “1” bits even. If there are 2 “1”s, the parity is “0”. If there is only 1 “1”, the parity is “1”.
How does parity RAID work?
How does parity work in RAID 5? RAID 5 is disk striping with parity. With this level of RAID, data is striped across three or more disks, with parity information stored across multiple disks. Parity is a calculated value that’s used to restore data from the other drives if one of the drives in the set fails.
How to calculate RAID 5 parity information?
RAID 5: Block-level striping with distributed parity: Unlike RAID 4, parity information is distributed among the drives, requiring all but one to operate. RAID 5 might be susceptible to system failures due to long rebuild time during which a second drive might fail, which is why some advise against its usage despite looking good on paper. RAID
What is raid and what does it do?
RAID stands for “redundant array of independent disks”. It is a technique that was developed to provide speed, reliability, and increased storage capacity using multiple disks rather than single disk solutions. So basically, RAID takes multiple hard drives and allows them to be used as one large hard drive with benefits depending on the level of RAID being used.