Identify Storage Technologies and Understand RAID

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1 Windws Server Administratin Fundamentals Identify Strage Technlgies and Understand RAID

2 Windws Server Administratin Fundamentals Lessn Overview In this lessn, yu will learn: Lcal strage ptins Netwrk strage ptins Redundant Array f Independent Disk (RAID) ptins

3 Windws Server Administratin Fundamentals Anticipatry Set List three different RAID cnfiguratins. Which f these three bus types has the fastest transfer speed? Parallel ATA (PATA) Serial ATA (SATA) USB 2.0

4 Windws Server Administratin Fundamentals Lcal Strage Optins Lcal strage ptins can range frm a simple single disk t a Redundant Array f Independent Disks (RAID). Lcal strage ptins can be brken dwn int bus types: Serial Advanced Technlgy Attachment (SATA) Integrated Drive Electrnics (IDE, nw called Parallel ATA r PATA) Small Cmputer System Interface (SCSI) Serial Attached SCSI (SAS)

Lcal strage ptins can be brken dwn int bus types: Serial Advanced Technlgy Attachment (SATA)

5 Windws Server Administratin Fundamentals Lcal Strage Optins SATA drives have taken the place f the traditin PATA drives. SATA have several advantages ver PATA: Reduced cable bulk and cst Faster and mre efficient data transfer Ht-swapping technlgy

6 Windws Server Administratin Fundamentals Lcal Strage Optins (cntinued) SAS drives have taken the place f the traditinal SCSI and Ultra SCSI drives in server class machines. SAS have several advantages ver SCSI. Supprts up t devices while SCSI has a limit f 8 16 devices Higher transfer speeds range frm 3 t 6 Gbits/s Faster and mre efficient data transfer

7 Windws Server Administratin Fundamentals Netwrk Strage Optins Netwrk Attached Strage (NAS) Cntain ne r mre hard disks, typically in a RAID cnfiguratin Cnfigured ver the netwrk Uses file-based prtcls such as Netwrk File System (NFS) Remves the file serving respnsibility frm ther servers n the netwrk Strage Area Netwrk (SAN) Architecture t attach remte strage devices t servers Des nt prvide file abstractin

prtcls such as Netwrk File System (NFS) Remves the file serving respnsibility frm ther servers n the

8 Windws Server Administratin Fundamentals Redundant Array f Independent Disk (RAID) Optins RAID A disk system that cntains multiple disk drives, called an array, t prvide greater perfrmance, reliability, strage capacity, and lwer cst Each level uses a different algrithm t implement fault tlerance. Types f RAID Hardware Imprved perfrmance Sftware Lwer cst, requires mre prcessr cycles

perfrmance, reliability, strage capacity, and lwer cst Each level uses a different algrithm t

9 Windws Server Administratin Fundamentals RAID 0 Optin Data is divided int blcks and spread in a fixed rder amng all disks in an array. Imprves read and write perfrmance by spreading peratins acrss multiple disks. Des nt prvide fault tlerance.

10 Windws Server Administratin Fundamentals RAID 1 Optin Disk mirrring prvides a redundant, identical cpy f a selected disk. All data written t the primary disk is written t the mirrr disk. Prvides fault tlerance and generally imprves read perfrmance but may degrade write perfrmance. Ttal space = 1/2 ttal drive space 2x100 GB hard drives Ttal space after RAID 1 = 100 GB

All data written t the primary disk is written t the mirrr disk.

11 Windws Server Administratin Fundamentals RAID 5 Optin Disk striping with parity Writes the parity acrss all the disks Data redundancy is prvided by the parity infrmatin. The data and parity infrmatin are arranged n the disk array s that the tw types f infrmatin are always n different disks. Striping with parity ffers better perfrmance than disk mirrring (RAID 1). Hwever, when a stripe member is missing, read perfrmance is decreased.

The data and parity infrmatin are arranged n the disk array s that the tw types f infrmatin are always n

12 Windws Server Administratin Fundamentals RAID 5 Optin (cntinued) Drive space used fr parity = 1/n(tds) n = number f disks in the array tds = ttal drive space Fr example: n = 5 drives tds = 500 GB (5x100 GB drives) 1/5(500) = 100 GB f drive space used fr parity 400 GB available free space after RAID 5 is cnfigured

space Fr example: n = 5 drives tds = 500 GB (5x100 GB drives) 1/5(500) = 100 GB

13 Windws Server Administratin Fundamentals RAID 10 Optin Uses a striped array f disks that are then mirrred t anther identical set f striped disks Prvides the perfrmance benefits f disk striping with the disk redundancy f mirrring Prvides the highest read-and-write perfrmance f any ne f the ther RAID levels, but at the expense f using tw times as many disks Organizatins with a need fr high availability wuld benefit frm a RAID 10 slutins Banks, gvernment, nline retail stres

Prvides the highest read-and-write perfrmance f any ne f the ther RAID levels, but at the expense f using tw times as

14 Windws Server Administratin Fundamentals Lessn Review What is the minimum number f drives required fr a RAID 5 slutin? What is the main benefit t having a hardware-based RAID as ppsed t a sftware-based RAID? What is an advantage f having Netwrk Attached Strage as ppsed t Direct Attached Strage?

What is the main benefit t having a hardware-based RAID as ppsed t a

Identify Major Server Hardware Components

Identify Major Server Hardware Components 98-365 Windws Server Administratin Fundamentals Identify Majr Server Hardware Cmpnents 98-365 Windws Server Administratin Fundamentals Lessn Overview In this lessn, yu will learn: Server frm factrs Server