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iSCSI原理及儲存虛擬化的整合應用
www.coventive.comwww.coventive.comwww.coventive.comwww.coventive.com
Coventive 銘威國際黃智宏
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AgendaAgenda
什麼是 iSCSI ?LVM結合 iSCSI NAS DAS LVM 的完美架構iSCSI 的應用Coventive Storage Server 特點DEMO結語
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Market Overview什麼是什麼是 iSCSI ?iSCSI ?什麼是什麼是 iSCSI ?iSCSI ?
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Storage (RAID)
(Target)
Storage (TAPE)
NAS
FC Switch Ethernet Switch
Unix/Linux Clients Windows/UNIX
Servers
DAS
Windows Clients
SCSI
FC/iSCSI
FC/iSCSI
FC
SANGbE
10/100/1000
FC/iSCSI
GbE NIC
Storage HBA
DAS 、 SAN 、 NASDAS 、 SAN 、 NAS
From: IP Based SAN, 工研院
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IP Network
NAS
iSCSIStorage Farm
FC Switch
Storage
Server
Storage Router
EthernetSwitch
ClientServerwith iSCSI Interface
Network StorageNetwork Storage
From: IP Based SAN, 工研院
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Major DifferencesMajor Differences
LVM 名詞 使用者電腦連接到 Storage 的媒介
File/BlockLevel
使用者電腦看到的可能現象
DASDirect Access
Storage
SCSI Cable Block Level1. 一個本機硬碟2. 兩個本機硬碟
NASNetwork Attached
Storage
網路線 File Level
1. 網路芳鄰的一個 folder2. 一個連接磁碟機 Z:3. UNIX 電腦 nfs mount
的一個目錄
SANLogical Volume
Fibre Channel Block Level1. 一個本機硬碟2. 兩個本機硬碟
iSCSIInternet SCSI
網路線 Block Level
1. 一個本機硬碟2. 兩個本機硬碟 , 其中一
個為 D:, 一個割成 E: F:
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iSCSI Initiator & TargetiSCSI Initiator & Target
User space
Kernel space
iSCSI TargetiSCSI Initiator
User Application
File System
SCSI Driver
iSCSI
Initiator Driver
Disk
Transport Network
Network Stack
Network Stack
SCSI Driver
iSCSI
Target Driver
SCSI HBA Driver/
RAID Controller
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What SAN Provide?What SAN Provide?Improve to application availability
Storage independent of application and accessible through alternate data paths
High application performance
Storage processing off-loaded from server and moved onto a separate network
Centralized and consolidated storage
Simpler management, scalability, flexibility, and availability
Data transfer and vaulting to remote sites
Remote copy of data enabled for disaster protection
Simplified centralized management
Single image of storage media simplifies management
From: SAN Introduction, IBM Redbooks
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Why IP-Based Storage NetworkingWhy IP-Based Storage Networking
Ubiquitous nature of IP
access storage from LAN, MAN, WAN, Internet
economy of scale
Scalability
distance, node count, performance (GE/10GE), expertise
Single access technology
for enterprise networks and storage networks
servers already have IP/Ethernet
Manageable, secure and interoperable
SNMP, MIBs, DNS, LDAP
IPSEC, VLANs, Firewalls
R&D investment in Ethernet/IP
Use existing GigE Infrastructure
From: IP Based SAN, 工研院
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Market OverviewLVMLVM (Logical Volume Management)(Logical Volume Management)
LVMLVM (Logical Volume Management)(Logical Volume Management)
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提供整合儲存系統中磁碟空間不受限於儲存系統的格式,也提高了其應用範圍。此邏輯磁碟如同一般的磁碟機,因此可以執行許多應
用於磁碟機上的程式,包括 fdisk 、 format 等等,也正因如此其可以設定成許多不同的資料儲存格式或檔案系統,如 NTFS 、 FAT16/32 、 EXT2 等等 提供使用者可以隨時依其需求,動態調整邏輯磁碟的
容量,以提高儲存系統的利用率。當儲存系統的磁碟空間不敷使用時,使用者也可以線
上增加實體磁碟機,以擴充儲存系統的實際容量。儲存設備的虛擬化提供高彈性及高利用率的儲存功能
LVM: 儲存系統核心技術 (儲存的虛擬化 )LVM: 儲存系統核心技術 (儲存的虛擬化 )
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LVM Functional Architecture LVM Functional Architecture
SATA/IDEDisk
Drivers
SAS/SCSIDisk
Drivers
FCStorageDrivers
Logical Volume Manager (LVM)
System Level
Physical Device
VG
PV PV PV
LV LV LV LV
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LVM 原理LVM 原理
•VGDA 儲存的資訊包含: •這個 PV 所屬的 VG 為何。 •這個 PV 於 VG 中的序號為何。 •這個 PV 的 PE 單位大小為何。 •這個 PV 的 PE 分配給哪些 LV。
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LVM 名詞整理LVM 名詞整理
LVM 名詞 英文名詞 中文名詞 表現出來的可能實際設備
PVPhysical Volume
Physical Disk 實體磁碟1. 一個外接 Disk
Array2. 一顆外接 HD3. 一個內建 RAID
VGVolume Group
Storage 儲存櫃1. 一個內建的 RA
ID2. 兩個內建 RAID
合成
LVLogical Volume
Logical Disk 邏輯磁碟1. iSCSI Target
邏輯磁碟2. 本機硬碟 E:3. 一個 Folder
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Market Overview結合結合 iSCSI NAS DAS LVM iSCSI NAS DAS LVM 的的完美架構完美架構
結合結合 iSCSI NAS DAS LVM iSCSI NAS DAS LVM 的的完美架構完美架構
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Storage ComponentStorage Component
RAID ControllerLVMiSCSI TargetNASIntegration
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Example of Coventive Storage ComponentExample of Coventive Storage Component
HD1 HD2 HDn
VG1 VG2 VGm
LV11 LV12 LV1xLVm1 LVm2 LVmz
Layer below is hidden from layer above
resizable
resizable
extendable
VV11 VV12
resizable
resizablePhysicalHD
PhysicalHD
Ext3File system
PartitionWith ext3
Storage
Server
File System orVirtual Volume
LogicalVolume
VolumeGroup
Physical Volume
RAIDController
iSCSI Target NAS
iSCSI Initiator
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Market OverviewiSCSIiSCSI 的應用的應用iSCSIiSCSI 的應用的應用
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使用 iSCSI 的基本觀念使用 iSCSI 的基本觀念
否則可能會造成該磁碟損毀。
多台電腦不得同時存取同一個 iSCSI 磁碟
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iSCSI 基本應用iSCSI 基本應用
Windows XPMicrosoft iSCSI Initiator
Linux
E:\(iSCSI1) /dev/sdb (iSCSI2)
GbE LANTCP/IP網路
E:\(iSCSI1)/dev/sdb (iSCSI2)
iSCSI Client
Windows + MS iSCSI Initiator
Linux + iSCSI Initiator 程式
iSCSI Target
切割不同的邏輯硬碟分別提供給對應的 Initiator 端一對一使用
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iSCSI Target + NAS 基本應用iSCSI Target + NAS 基本應用
iSCSI Client
同前頁NAS Client
Windows 以網芳連結 NAS 上的 share folder
Linux/UNIX 以 cifs 協定 mount NAS 上的 share folder
Storage
切割不同的邏輯硬碟分別提供給對應的 Initiator 端一對一使用切割邏輯硬碟後建立目錄檔案共享分享給網路芳鄰
Windows XPMicrosoft iSCSI Initiator
LinuxE:\(iSCSI1) /dev/sdb (iSCSI2)
GbE LANTCP/IP網路
E:\(iSCSI1)
/dev/sdb (iSCSI2)/NAS Share
網路芳鄰目錄 /NAS Share
網路芳鄰目錄 /NAS Share
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iSCSI Target + NAS 基本應用iSCSI Target + NAS 基本應用
iSCSI Client
同前頁NAS Client
Windows 以網芳連結 NAS 上的 share folder
Linux/UNIX 以 cifs 協定 mount NAS 上的 share folder
Storage
切割不同的邏輯硬碟分別提供給對應的 Initiator 端一對一使用切割邏輯硬碟後建立目錄檔案共享分享給網路芳鄰
Windows Server動態磁碟鏡射
F:\
F:\F:\
GbE LANTCP/IP網路
Windows Server動態磁碟鏡射
F:\
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iSCSI Target 基本應用iSCSI Target 基本應用
iSCSI Client
同前頁Storage
切割邏輯硬碟提供給對應的 Initiator 使用
將 iSCSI Target 遠端硬碟作為本機實體硬碟的 Mirror
F:\
F:\
本機硬碟動態磁碟鏡射
GbE LANTCP/IP網路
iSCSI磁碟動態磁碟鏡射
F:\
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Market OverviewCoventive Storage ServerCoventive Storage Server 特點特點Coventive Storage ServerCoventive Storage Server 特點特點
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Specific FeaturesSpecific Features
iSCSI TargetLVMiSCSI Target & NAS IntegrationBoth Block Level & File Level SharingEmbeded Linux (using DOM)Hardware RAID (3ware RAID Controller)
Hotswap / Hotspare
High PerformanceReplicationNAS Central Monitoring SystemMass Amount CreatingJava-based Web UISAOSWeb HDOver 2T Support
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High PerformanceHigh Performance
0
10
20
30
40
50
60
5 10 15 20 25 30 35 40 45 50 55
Engines
Thro
ughput
NAS 500 1.2.2 Synology v1.1.4
Under the same hardware and the same testing environment, running in Coventive NAS software is nearly 3 times faster than in Synology NAS software. (Netbench 7.01)
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High PerformanceHigh Performance
Model SPEC CIFS1 Client NAS
CIFS 1 Client NAS
NAS 7500 SATA
M/B:Supermicro P4SCI, RAM 512M, NAS OS 2.3.2
289M bit/sec
325M bit/sec
Note: This is NOT the maximum performance.
In multi-clients environment, the performance will over these.
Testing Environment:Testing method: Copy 2G file from 1 Windows Client to NAS and vice versa. Client computer: M/B:Tyan 5350, CPU: Xeon 3.0 *1, RAM 2GB
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SITE A
SITE B
Internet
Data
Encryption
Data sync between
Two NAS machines
in different locations
Data Replication
ReplicationReplication
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NAS Central Monitoring SystemNAS Central Monitoring System
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Java-based web UI Java-based web UI
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SAOSSAOSCommand Line Interface
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Web HDWeb HD
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Over 2T SupportOver 2T Support
The file systems, LVM and RAID controller provide over 2 tera bytes support. A single RAID volume size can over 2 tera bytes.A single logical disk size can over 2 tera bytes.A single file size can over 2 tera bytes.
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Market OverviewDEMODEMODEMODEMO
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Market Overview結語結語結語結語
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結語結語
儲存虛擬化是未來的趨勢 .
iSCSI 已經標準化 , 也得到微軟的支持 ,是Block Level 的經濟化解決方案 .
整合 iSCSI NAS LVM 的 Appliance 產品為技術創新的一大突破 .
Coventive 為國內 Storage Server 廠商 ,具備自主研發能量的技術領先者 .
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Thank you !
Contact us !Contact us !• Tel : 886-2-8226-3600Tel : 886-2-8226-3600
• Fax : 886-2-8226-3645Fax : 886-2-8226-3645
• E/M : jeffrey_huangE/M : [email protected]@coventive.com
[email protected][email protected]
• Website: www.coventive.comWebsite: www.coventive.com