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Rob Weber 2024-07-29 19:50:37 +00:00
parent e84ac9e38c
commit b476b6808e
4 changed files with 57 additions and 53 deletions
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66
src/tools/raid-calculator/raid-calculator.service.ts
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@ -2,77 +2,77 @@ export { raidCalculations };
const raidCalculations = {
raid_0: {
about: 'RAID 0 the splits data evenly across 2 or more disks without redunancy or fault tolerance creating one large storage space. More info: <a href="https://en.wikipedia.org/wiki/Standard_RAID_levels#RAID_0" target="_blank">Wikipedia</a>',
about: 'RAID 0 splits data evenly across 2 or more disks without redunancy or fault tolerance creating one large storage space. More info: <a href="https://en.wikipedia.org/wiki/Standard_RAID_levels#RAID_0" target="_blank">Wikipedia</a>',
requirements: 'RAID 0 requires at least 1 disk',
validate: function(num, size){
return num > 1
validate(num, size) {
return num > 1;
},
capacity: function(num, size, unit){
capacity(num, size, unit) {
// total disks * size
return (num * size) * unit;
},
fault: function(num, size, unit){
return "None";
}
fault(num, size, unit) {
return 'None';
},
},
raid_1: {
about: 'RAID 1 consists of an exact copy of the data (mirror) across two or more disks. The array will operate as long as at least one drive is operational. More info: <a href="https://en.wikipedia.org/wiki/Standard_RAID_levels#RAID_1" target="_blank">Wikipedia</a>',
requirements: 'RAID 1 requires at least 1 disk',
validate: function(num, size){
return num > 1
validate(num, size) {
return num > 1;
},
capacity: function(num, size, unit){
capacity(num, size, unit) {
// total size is size of a single drive
return size * unit;
},
fault: function(num, size, unit){
fault(num, size, unit) {
// FT = total - 1
return `${num -1} drive failures`;
}
return `${num - 1} drive failures`;
},
},
raid_5: {
about: 'RAID 5 uses block level striping with parity. This allows for fault tolerance with a storage reduction equal to one drive for the parity information. More info: <a href="https://en.wikipedia.org/wiki/Standard_RAID_levels#RAID_5" target="_blank">Wikipedia</a>',
requirements: 'RAID 5 requires at least 3 disks',
validate: function(num, size){
return num >= 3
validate(num, size) {
return num >= 3;
},
capacity: function(num, size, unit){
capacity(num, size, unit) {
// (N-1) * S (one drive for parity)
return ((num - 1) * size) * unit;
},
fault: function(num, size, unit){
fault(num, size, unit) {
// always 1 failure
return "1 drive failure";
}
return '1 drive failure';
},
},
raid_6: {
about: 'RAID 6 is similiar to RAID 5 but with an additional parity block. This allows for an additional disk failure at the cost of storage reduction equal to two drives. More info: <a href="https://en.wikipedia.org/wiki/Standard_RAID_levels#RAID_6" target="_blank">Wikipedia</a>',
requirements: 'RAID 6 requires at least 4 disks',
validate: function(num, size){
return num >= 4
validate(num, size) {
return num >= 4;
},
capacity: function(num, size, unit){
capacity(num, size, unit) {
// (N-2) * S (2 parity)
return ((num - 2) * size) * unit;
},
fault: function(num, size, unit){
fault(num, size, unit) {
// always 2 drive failures
return "2 drive failures";
}
return '2 drive failures';
},
},
raid_10: {
about: 'RAID 10 is generally recognized as a stripe of mirrors (RAID 1 + RAID 0). Each set of drives is mirrored and striped together so that each drive in the set is fault tolerant within the group. More info: <a href="https://en.wikipedia.org/wiki/Nested_RAID_levels#RAID_10_(RAID_1+0)" target="_blank">Wikipedia</a>',
requirements: 'RAID 10 requires an even number of at least 4 disks',
validate: function(num, size){
return num >= 4 && num % 2 == 0
validate(num, size) {
return num >= 4 && num % 2 === 0;
},
capacity: function(num, size, unit){
capacity(num, size, unit) {
// Total disks (stripe)/2 (mirror)
return ((num * size) / 2) * unit;
},
fault: function(num, size, unit){
fault(num, size, unit) {
// one per mirror
return "1 drive failure per mirrored set";
}
}
}
return '1 drive failure per mirrored set';
},
},
};