dell 四代卡

1、DCSE Associate Program,1/76,PowerEdge Expandable RAID Controller (PERC),DCSE Associate Program,2/76,Introduction to PERC,PowerEdge Expandable RAID Controller (PERC) is a high performance (SCSI) host adapter with RAID con

2、trol capabilities.The RAID (Redundant Array of Independent Disks) is a group of disk that appears to the host server as a single storage unit and the I/O is expedited because several disks can be accessed simultaneousl

3、y.,DCSE Associate Program,3/76,PERC Controller,DCSE Associate Program,4/76,AMI/LSI PERC Controllers,DCSE Associate Program,5/76,Adaptec PERC Controllers,DCSE Associate Program,6/76,AMI/LSI PERC BIOS,During the post seque

4、nce, the following informationwill be displayed when a AMI/LSI PERC controller isdetected.PowerEdge Expandable RAID Controller BIOS #.Press to Run Configuration UtilityOr press for WebBIOS,DCSE Associate Progr

5、am,7/76,AMI/LSI PERC BIOS,Main Menu of Ctrl-M,DCSE Associate Program,8/76,AMI/LSI PERC BIOS,View/Add Configuration – View/Add to existing configuration New Configuration – Clear existing configuration and create new con

6、figuration,DCSE Associate Program,9/76,Use select 2 HDs (Mirror 1), press , select another 2 HDs (Mirror 2), press again. Press to configure the logical drives.,AMI/LSI PERC BIOS- RAID 10,DCSE Associate Program,10/76,

7、AMI/LSI PERC BIOS- RAID 10,To configure RAID 10 in Ctrl-M, select “Span” and press to set the spanning mode to CANSPAN.,DCSE Associate Program,11/76,Disable Alarm Control,DCSE Associate Program,12/76,Force Online/Offl

8、ine,DCSE Associate Program,13/76,Replacing a card,Make sure the new card has no LD configure in its NVRAMPotential LD configure merge will occur if new card has LD info.Clear configure with all HD out of machine will e

9、rase LD configure in NVRAM.Replace the card.Open the Configure menu and select the View/Add Configuration menuSince the configure in NVRAM and Disks mismatch, the view configuration menu gives the options of viewing:

10、View Disk: The configuration that is currently on the DiskView NVRAM: The configuration that is on the NVRAM of the new card.,DCSE Associate Program,14/76,Adaptec PERC BIOS,During the post sequence, the following infor

11、mationwill be displayed when an Adaptec PERC controller isdetected.PowerEdge Expandable RAID Controller BIOS #.Press for Configuration Utility !,DCSE Associate Program,15/76,Adaptec PERC BIOS,Main Menu of Adaptec

12、PERC BIOS,DCSE Associate Program,16/76,Container Configuration Utility,Manage Container – Check the RAID/Container status and configurationCreate Container – Create RAID/Container,DCSE Associate Program,17/76,Q&A,DC

13、SE Associate Program,18/76,Backup,HVD SCSI是SCSI-2標準的組成部分，它可以提高數(shù)據(jù)傳輸速度、延長傳輸距離、增大總線上的最大器件數(shù)目。HVD將電纜長度增加到25米(82英尺)，采用寬字節(jié)的Fast SCSI總線允許總線上掛接16個SCSI器件(包括主機適配器在內(nèi))。然而，HVD SCSI需要大功率收發(fā)器，它利用差分電壓信號表示總線上的邏輯狀態(tài)。一對并行的電壓信號(一個正電壓和一個負電壓)沿總線

14、傳輸、建立一路差分電壓，如果 (V+) - (V-)是正數(shù)，則接收端檢測結(jié)果為邏輯“1”。如果 (V+) - (V-)是負數(shù)，則接收端檢測結(jié)果為邏輯“0”。差分總線相對于單端總線來說具有更小的噪聲和地電位偏差，因為任何總線干擾都同時作用于V+和V-、表現(xiàn)為供模干擾，可以有效地被抑制。正是由于這個原因，差分總線也被稱為平衡總線。這種總線形式可以延長電纜長度、降低噪聲。但平衡總線的大功率收發(fā)器不能集成在一片或兩片控制芯片內(nèi)，導(dǎo)致多數(shù)對價格敏

15、感的應(yīng)用無法采用差分總線方式。 LVD SCSI發(fā)布于1995年，它是一個低功率、低價格的差分總線收發(fā)器，保證信號的完整性，具有與HVD SCSI相同的高速數(shù)據(jù)傳輸能力。LVD (V+ 和 V-)信號擺幅約為±400mV，以1.25V的共模偏置電壓為中心擺動，與單端或高壓差分信號相比，LVD較小的信號擺幅能夠快速達到所要求的邏輯狀態(tài)。利用基于EIA-644 (LVDS)銅線數(shù)據(jù)傳輸標準的LVD SCSI能夠達到每秒655M字