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This commit is contained in:
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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2
src/tools/raid-calculator/raid-calculator.e2e.spec.ts
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@ -1,4 +1,4 @@
import { test, expect } from '@playwright/test';
import { expect, test } from '@playwright/test';
test.describe('Tool - RAID Calculator', () => {
test.beforeEach(async ({ page }) => {

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';
},
},
};

40
src/tools/raid-calculator/raid-calculator.vue
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@ -1,10 +1,10 @@
<script setup lang="ts">
import { formatBytes, UNIT_BASE } from '@/utils/convert';
import { raidCalculations } from './raid-calculator.service';
import { UNIT_BASE, formatBytes } from '@/utils/convert';
const diskTotal = ref(2);
const diskSize = ref(100);
const diskUnit = ref(Math.pow(10, 9));
const diskUnit = ref(10 ** 9);
const raidType = ref('raid_0');
const raidInfo = computed(() => raidCalculations[raidType.value].about);
const raidRequirements = computed(() => raidCalculations[raidType.value].requirements);
@ -12,27 +12,23 @@ const inputsValid = computed(() => validateSetup());
const calculatedCapacity = computed(() => {
// make sure values exist
if(diskTotal.value === undefined || diskSize.value === undefined)
{
if (diskTotal.value === undefined || diskSize.value === undefined) {
return '';
}
return formatBytes(raidCalculations[raidType.value].capacity(diskTotal.value, diskSize.value, diskUnit.value), 2, UNIT_BASE.BASE_10);
});
const calculatedFaultTolerance = computed(() => {
// make sure values exist
if(diskTotal.value === undefined || diskSize.value === undefined)
{
if (diskTotal.value === undefined || diskSize.value === undefined) {
return '';
}
return raidCalculations[raidType.value].fault(diskTotal.value, diskSize.value, diskUnit.value);
});
function validateSetup(){
function validateSetup() {
// validate the selected RAID type against parameters
return raidCalculations[raidType.value].validate(diskTotal.value, diskSize.value);
}
@ -53,10 +49,10 @@ function validateSetup(){
min-w-130px
ml-1
:options="[
{ label: 'MB', value: Math.pow(10, 6) },
{ label: 'GB', value: Math.pow(10, 9) },
{ label: 'TB', value: Math.pow(10, 12) },
{ label: 'PB', value: Math.pow(10, 15) },
{ label: 'MB', value: 10 ** 6 },
{ label: 'GB', value: 10 ** 9 },
{ label: 'TB', value: 10 ** 12 },
{ label: 'PB', value: 10 ** 15 },
]"
/>
</div>
@ -74,18 +70,26 @@ function validateSetup(){
]"
/>
</n-form-item>
<p class="raidError" v-if="!inputsValid">{{ raidRequirements }}</p>
<p v-html="raidInfo"></p>
<p v-if="!inputsValid" class="raidError">
{{ raidRequirements }}
</p>
<p v-html="raidInfo" />
</c-card>
<c-card title="Results">
<n-table v-if="inputsValid">
<tbody>
<tr>
<td font-bold width="30%">Capacity</td>
<td>{{ calculatedCapacity }}</td>
<td font-bold width="30%">
Capacity
</td>
<td>
{{ calculatedCapacity }}
</td>
</tr>
<tr>
<td font-bold width="30%">Fault Tolerance</td>
<td font-bold width="30%">
Fault Tolerance
</td>
<td :value="calculatedFaultTolerance">
{{ calculatedFaultTolerance }}
</td>

2
src/utils/convert.ts
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@ -1,6 +1,6 @@
export enum UNIT_BASE {
BASE_2 = 1024,
BASE_10 = 1000
BASE_10 = 1000,
}
export function formatBytes(bytes: number, decimals = 2, base: UNIT_BASE = UNIT_BASE.BASE_2) {