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Setting up RAID (Redundant Array of Independent Disks)

By pyth0n3, in Tutoriale video

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pyth0n3 Newbie

pyth0n3

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Watch online video

YouTube - Setting up RAID (Redundant Array of Independent Disks)

Download video:

http://tinyurl.com/6yjo3wt

md5sum

3d1c5d4564e1f991f50083e9cd4f0e5e raid_volume.tar.gz

sha256sum

b98f77909c2e2fdde6e70bcfc82d407cb2f888bfb0fe433cd7c47a9a298f4378 raid_volume.tar.bz

Raid-1 level configuration

raid1.gif

Raid-5 level configuration

raid5.png

More about raid

RAID - Wikipedia, the free encyclopedia

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Cheater Rookie

Cheater

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Eu sunt adeptul raid0, se aduna spatiul si vitezele, e folosit pentru a scoate performante maxime.

Probabil uni vor zice, ca nu e viabil deoarece daca pica unul nu mai pot fi recuperate datele, dar daca ai un sigur hdd si pica nu-i tot aia?!

Eu merg de mult timp pe performante cu 2 ssd-uri in raid0 si n-au nici macar un bad, merge superb.

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pyth0n3 Newbie

pyth0n3

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Sincer eu foloseam ?i înc? mai folosesc LVM Logical Volume Manager

In unele cazuri encrypted lvm folosind cryptsetup/

Fiecare nivel raid are pro ?i contro

Eu am prezentat raid1 si raid5

Raid-1 ofer? o flexibilitate foarte mare poate fi sigur deoarece ofer? doua unit??i dedicate pentru backup reciproc

Dezavantajul este ca se pierde 50% din spa?iul de pe harddisk

Raid-5 face cea mai buna utilizare a harddisk-ului , necesita calcule matematice complicate iar dac? se pierde mai mult de o unitate e jale.

Presupun ca sistemul RAID în general vine creat pe mai multe hard disk-uri dar ofer? oricum o metoda rapida de a crea un nou spa?iu intrun sistem în care se cere creare unui nou director (EX.Linux /home1 /home2 /home3 )

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Zatarra Enthusiast

Zatarra

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Ai cam gresit umpic acolo cand ai creat RAID1 deoarece ai creat un mirror pe 2 partitii de marimi diferite, ceea ce nu e deloc profesional.

Pe langa asta nu ai setat partition type la cele 4 partitii create. Daca vroiai sa faci ceva furmos trebuia sa dai t si sa setezi la fiecare partite Linux raid autodetect. In rest tutorialul e destul de bun.

P.S. E si mai bine daca folosesti LVM pe raid-uri de tip mirror :P

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pyth0n3 Newbie

pyth0n3

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Mda , am omis atribuirea unu system id pentru fiecare parti?ie creata

fd Linux raid auto


 0  Empty           24  NEC DOS         81  Minix / old Lin bf  Solaris        
 1  FAT12           39  Plan 9          82  Linux swap / So c1  DRDOS/sec (FAT-
 2  XENIX root      3c  PartitionMagic  83  Linux           c4  DRDOS/sec (FAT-
 3  XENIX usr       40  Venix 80286     84  OS/2 hidden C:  c6  DRDOS/sec (FAT-
 4  FAT16 <32M      41  PPC PReP Boot   85  Linux extended  c7  Syrinx         
 5  Extended        42  SFS             86  NTFS volume set da  Non-FS data    
 6  FAT16           4d  QNX4.x          87  NTFS volume set db  CP/M / CTOS / .
 7  HPFS/NTFS       4e  QNX4.x 2nd part 88  Linux plaintext de  Dell Utility   
 8  AIX             4f  QNX4.x 3rd part 8e  Linux LVM       df  BootIt         
 9  AIX bootable    50  OnTrack DM      93  Amoeba          e1  DOS access     
 a  OS/2 Boot Manag 51  OnTrack DM6 Aux 94  Amoeba BBT      e3  DOS R/O        
 b  W95 FAT32       52  CP/M            9f  BSD/OS          e4  SpeedStor      
 c  W95 FAT32 (LBA) 53  OnTrack DM6 Aux a0  IBM Thinkpad hi eb  BeOS fs        
 e  W95 FAT16 (LBA) 54  OnTrackDM6      a5  FreeBSD         ee  GPT            
 f  W95 Ext'd (LBA) 55  EZ-Drive        a6  OpenBSD         ef  EFI (FAT-12/16/
10  OPUS            56  Golden Bow      a7  NeXTSTEP        f0  Linux/PA-RISC b
11  Hidden FAT12    5c  Priam Edisk     a8  Darwin UFS      f1  SpeedStor      
12  Compaq diagnost 61  SpeedStor       a9  NetBSD          f4  SpeedStor      
14  Hidden FAT16 <3 63  GNU HURD or Sys ab  Darwin boot     f2  DOS secondary  
16  Hidden FAT16    64  Novell Netware  af  HFS / HFS+      fb  VMware VMFS    
17  Hidden HPFS/NTF 65  Novell Netware  b7  BSDI fs         fc  VMware VMKCORE 
18  AST SmartSleep  70  DiskSecure Mult b8  BSDI swap       fd  Linux raid auto
1b  Hidden W95 FAT3 75  PC/IX           bb  Boot Wizard hid fe  LANstep        
1c  Hidden W95 FAT3 80  Old Minix       be  Solaris boot    ff  BBT            
1e  Hidden W95 FAT1

Un pas pe care l-am facut aici cînd am creat un LVM

De la minutul 3:20 pana la 4:10 doar ca in cazul LVM am specificat un alt id

O tabela pt fiecare cod o g?si?i mai sus

@Zattara In legatura cu marimile partitiilor , vroiam sa fie valori mici si pe moment am specificat valori diverse

Am ales valori mici ca sa nu astept prea mult in video in timp ce vin create

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Zatarra Enthusiast

Zatarra

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Mda , am omis atribuirea unu system id pentru fiecare parti?ie creata

fd Linux raid auto


 0  Empty           24  NEC DOS         81  Minix / old Lin bf  Solaris        
 1  FAT12           39  Plan 9          82  Linux swap / So c1  DRDOS/sec (FAT-
 2  XENIX root      3c  PartitionMagic  83  Linux           c4  DRDOS/sec (FAT-
 3  XENIX usr       40  Venix 80286     84  OS/2 hidden C:  c6  DRDOS/sec (FAT-
 4  FAT16 <32M      41  PPC PReP Boot   85  Linux extended  c7  Syrinx         
 5  Extended        42  SFS             86  NTFS volume set da  Non-FS data    
 6  FAT16           4d  QNX4.x          87  NTFS volume set db  CP/M / CTOS / .
 7  HPFS/NTFS       4e  QNX4.x 2nd part 88  Linux plaintext de  Dell Utility   
 8  AIX             4f  QNX4.x 3rd part 8e  Linux LVM       df  BootIt         
 9  AIX bootable    50  OnTrack DM      93  Amoeba          e1  DOS access     
 a  OS/2 Boot Manag 51  OnTrack DM6 Aux 94  Amoeba BBT      e3  DOS R/O        
 b  W95 FAT32       52  CP/M            9f  BSD/OS          e4  SpeedStor      
 c  W95 FAT32 (LBA) 53  OnTrack DM6 Aux a0  IBM Thinkpad hi eb  BeOS fs        
 e  W95 FAT16 (LBA) 54  OnTrackDM6      a5  FreeBSD         ee  GPT            
 f  W95 Ext'd (LBA) 55  EZ-Drive        a6  OpenBSD         ef  EFI (FAT-12/16/
10  OPUS            56  Golden Bow      a7  NeXTSTEP        f0  Linux/PA-RISC b
11  Hidden FAT12    5c  Priam Edisk     a8  Darwin UFS      f1  SpeedStor      
12  Compaq diagnost 61  SpeedStor       a9  NetBSD          f4  SpeedStor      
14  Hidden FAT16 <3 63  GNU HURD or Sys ab  Darwin boot     f2  DOS secondary  
16  Hidden FAT16    64  Novell Netware  af  HFS / HFS+      fb  VMware VMFS    
17  Hidden HPFS/NTF 65  Novell Netware  b7  BSDI fs         fc  VMware VMKCORE 
18  AST SmartSleep  70  DiskSecure Mult b8  BSDI swap       fd  Linux raid auto
1b  Hidden W95 FAT3 75  PC/IX           bb  Boot Wizard hid fe  LANstep        
1c  Hidden W95 FAT3 80  Old Minix       be  Solaris boot    ff  BBT            
1e  Hidden W95 FAT1

Un pas pe care l-am facut aici cînd am creat un LVM

De la minutul 3:20 pana la 4:10 doar ca in cazul LVM am specificat un alt id

O tabela pt fiecare cod o g?si?i mai sus

@Zattara In legatura cu marimile partitiilor , vroiam sa fie valori mici si pe moment am specificat valori diverse

Am ales valori mici ca sa nu astept prea mult in video in timp ce vin create

1. E Zatarra :))

2. Nu e o greseala mare faza cu marimea, dar la Mirroring e indicat sa fie de aceasi marime.

3. Se pot afla partition type-urile apasand t (pentru type) si apoi L (pentru list) in interiorul comenzii fdisk

4. Oricum de apreciat tutorialul si initiativa. Bravo

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