ISM Day 3

SDDC

EMC ViPR Controller, ECS and ScaleIO

Network Stack Comparison

1. SCSI --> SCSI->Physical

2. FCIP --> SCSI->FC->FCIP-TCP-IP->Ethernet->FCIP->Physical (远程FC SAN环境容灾场景)

3. FCoE --> SCSI->FE_>FCoE-Ethernet->FCoE->Physical

4. FC --> SCSI->FC->Physical

FC Protocol Stack

FC Flow Control

1. BB_Credit保证

NPV

1. NPV交换机跟NPIV交换机连接的那个端口叫NP_port（NPIV交换机端口还是F_port）
2. 支持NPV的交换机用作直通设备(不需要ID domain，不执行连接结构服务）
3. 解决了连接结构中的Domain_ID数量激增问题。

iSCSI Addresses and Name

1. IQN: iSCSI Qualified Name
2. EUI: Extended Unique Identifier
3. NAA: Network Address Authority

Link aggregation

1. 提高吞吐量
2. 分发流量

延伸VLAN(Stretched VLAN)

1. A VLAN that spans multiple sites and enables OSI Layer 2 communication between a group of nodes over an OSI Layer 3 WAN infrastructure, independent of their physical location.

FCIP

Merged Fabric

E-->FCIP gateway E--> VE--VE --> FCIP gateway E-->Storage SAN-E

CEE

1. PFC: Priority-Based Flow Control( 8 virtual links on a single physical link )
2. ETS: Enhanced Transmission Selection
3. CN: Congestion Notification( )
4. DCBX:

Measuring Information Availability( 衡量信息可用性 )

1. Mean Time Between Failure( MTBF )
2. Mean Time to Repair( MTTR )

BC

RPO

• Point-in-time to which systems and data must be recovered after an outage.
• Amount of data loss that a business can endure

RTO

• Time within shich systems and applications must be recovered after an outage
• Amount of downtime that a business can endure and survice.

iSCSI

• 在iSCSI存储环境，主机端不需要做网卡绑定，而是通过多路径软件去管理，类似于存储。