infiniband hba

What are the hardware requirements for deploying FCoE? What are your suggestions for optimizing FCoE deployment? In general, FCoE needs a switch that can bridge the data center to datacenterbridging, DCB) to expand the traditional Ethernet so that it is suitable for transmitting storage traffic without losing data. Some, but not all) Ethernet vendors support the dcb feature of the 10GbE switch. At the same time, the converged network adapter convergednetworkadapter, CNA) is suitable for FCoE. CN

. Then, the second host sends an I/O request before it needs to resend the SCSI reservation command to the disk.Classification of SCSI Locks:There are two types of SCSI locks: SCSI-2 Reservation and SCSI-3 reservation. Only one type of SCSI lock can exist on a LUN.SCSI-2 reservation only allows the device to be accessed by a SCSI lock initiator, which is the host's HBA. For example, HBA1 on Host 1 adds a SCSI-2 lock to the LUN that is accessed, even i

After a long period of monitoring, found Iostat in the%util high, has been in 98% up and down, indicating that the bandwidth occupancy rate is highly, encountered a bottleneck.and read and write speed is very slow, after troubleshooting, found that the HBA card problems, after replacement, with the DD if command test, the disk read and write speed has been more than 10 times times the promotion.But after replacing the

the port Remote differential compression: When the bandwidth is tight, you can bind multiple NICs to one to increase the maximum bandwidth. If there is only one, data differential compression is very economical. Multi-path IO: if there are two or more HbA cards on the server, in order to increase the throughput bandwidth with storage and prevent the storage network from spof, You need to configure it (the current test environment does not even have o

-getbbustatus-aall | grep 'relative state of charge' [view charging progress percentage]The change in the tape status, from disk pulling to disk insertion.Device | normal | damage | rebuild | normalVirtual Drive | OPTIMAL | degraded | OPTIMALPhysical drive | online | failed-> unconfigured | rebuild | online R710 available RAID card category Internal:Perc h200 (6 GB/second)Perc h700 (6 GB/sec) with 512 MB battery backup CacheSAS 6/IRPerc 6/I with 256 MB battery backup CachePerc s100( software-bas

following examples show where RDM is needed rather than a Virtual Disk: in the MSC cluster, RDM is required to provide quorum and data disks. This includes V2V clusters and p2v clusters across ESX hosts. Note that the virtual disk can be used as the "cluster-in-a-box" configuration on a single physical host. RDM is required in the solution of the application that San knows in the virtual machine. There are many examples of this situation, such as the snapmanager series applications of netapp. T

; In the above case, if you use VB statements or functions to implement it, you need to write a very short code, and because you need to use the sequential search method to complete it, therefore, code execution efficiency is also low. If the sendmessage function is used, the amount of code can be greatly reduced and the execution efficiency can be greatly improved. Using the sendmessage function to complete the preceding two tasks is very simple. Each task simply sends a message to multiple ro

Specific.(Z2)........00000000 Device Specific.(Z3)........03000909 Device Specific.(Z4)........FFC01231 Device Specific.(Z5)........02C82774 Device Specific.(Z6)........06C12715 Device Specific.(Z7)........07C12774 Device Specific.(Z8)........20000000C95A933E Device Specific.(Z9)........BS2.71X4 Device Specific.(ZA)........B1F2.70A5 Device Specific.(ZB)........B2F2.71X4 Device Specific.(ZC)........00000000 Hardware

Using System; Using System. Security; Using System. Security. Cryptography; Using System. Diagnostics; Using System. Web; Using System. Text; Namespace Bigeagle. Util{/// /// An Encryption Class/// /// /// /// /// /// Encapsulate common encryption algorithms/// Public class Cryptography{ /// /// Specifies the md5 encryption string/// /// /// Public static string EncryptMD5String (string a_strValue){# If DEBUGDebug. Assert (a_strValue.Trim ()! = "", "EMPTY string", "EMPTY string does not need to

I talked to my friends about how to improve the performance of SQL Server and found some problems. For SQL Server, in addition to following the best practices of OS and applications, what are the optimization methods? Hardware-level optimization is also very important, especially storage optimization. After talking about this, we started to explain the SAN issue from the DBA's perspective. Many factors affect the disk I/O performance, such as shared or dedicated disks, RAID level, bus speed, and

/12/718756_1413082507WL3o.jpg "Height =" 269 "/> Add the fcoe HbA connection View list and assign this server profile to bay1 host. 650) This. width = 650; "style =" border-bottom: 0px; border-left: 0px; border-top: 0px; border-Right: 0px; "Title =" 5 "border =" 0 "alt =" 5 "src =" http://img1.51cto.com/attachment/201410/12/718756_1413082516qAuG.jpg "Height =" 305 "/> Configure the boot from San check option (one is primary and the other is seco

be exceeded (the queue depth on ds4000 is limited by firmware and firmware6.1 is 2048)All Lun shared queue restrictions on StorageFormula: queue depth on ds4000/(Number of hosts * Luns on each host ;)Maximum number of Luns selected on the hostFor example, if four hosts have 2048, 14, 16, and 32 Luns, the queue depth is/(4*32) = 16 Some hosts define the queue depth on the hosts cardCalculation formula: Number of queue depth/memory cards on ds4000 The queue depth is too large, which may cause dat

Some Linux database servers use low-end storage. Due to service changes, some Luns are required. Must I restart a Linux server after adding a LUN? Use the QLogic fc hba lun Scan Utility script to identify newly added Luns without restarting the system. You do not need to re-Load the QLogic FC driver. Scenario: Linux Server + QLogic memory card. Take the Qla2340 memory card of QLogic as an example. Download the script (by the way, the QLogic fc

specian. (Z4 )........ FFC01231 Device Specific. (Z5 )........ 02C82774 Device Specific. (Z6 )........ 06c000015 Device Specific. (Z7 )........ 07C12774 Device Specific. (Z8 )........ 200010000c95a933e Device Specific. (Z9 )........ BS2.71X4 Device Specific. (ZA )........ b1F2.70A5 Device Specific. (ZB )........ b2F2.71X4 Device Specific. (ZC )........ 00000000 Hardware Location Code ...... u78A0.001.DNWKYDT-P1-C4-T1 platform specific Name: fiber-channel Model: LP11000 Node: fiber-channel @ 1 D

Targetcli sets up the fiber Channel (FC) target and targetclifire Hardware information To obtain WWN, run the following command:cat /sys/class/fc_host/host*/port_name | sed -e s/0x// -e 's/../:/g' -e s/:$// As the target machine System: Ubuntu 14.04 Server HBA: QLogic ISP2432 WWN1: 21: 01: 00: 1b: 32: 31: 43: XX WWN2: 21: 00: 00: 1b: 32: 11: 43: XX Machine as initiator System: Ubuntu 14.04 Server

applications, from independent software vendor products to OEM subsystem vendor storage applications. Architecture of the storage application platform (I) Currently, many platforms that have been launched or are being designed meet the above requirements. These platforms can be divided into two categories: The first type of application platform is based on general-purpose technologies, such as servers, network service platforms, and routers. Because these are easy to implement, the first wave o

this means physical damage, but some hard disks may be failure, or logical failure. For example, if a hard disk has been damaged, the hot backup disk is in the top, and the system is in reconstruct. At this time, the application is still writing data. If the load is large, a hard disk logical failure may occur. In this case, the array is fail. In this case, the data can be recovered. 2, FailOver Under what circumstances will I fail? In fact, many people do not want to use failover, because only

relatively easy, as long as the controller is removed, replace the SAS module can be, the upgrade will not affect the data (this is not absolute), so the upgrade is very difficult. And clearly can supply all the original new accessories.After the above pre-work, this upgrade is also clear for the first to carry out the storage architecture upgrade to the FC San architecture, the use of redundant form, each server dual Fc-hba card (the original scheme

purchase the appropriate vsphere license.Third, server planningIn the experimental environment, three PowerEdge R720 servers and two Dell PowerEdge R420 were used, the first of which were used as ESXi hosts, and the latter for data backup (VDP, also ESXi host) and iSCSI soft Storage (CentOS iSCSI virtual hard disk) host.The 3 R720 (ESXI-MGT, esxi01, esxi02) configurations for the Exsi compute node host are identical, as follows: Processor Memory Hard disk Card

Talking about the customer's point of viewNeil CameronCustomers typically have a definite idea of the number of ports. I feel that this is somewhat unusual because people often have no such opinions about other things in life. However, when it comes to the number of ports on a raid or HBA controller, we do have a very fixed view.For example: I have two ssd--oh, you do not have two port controller, then I will look at four ports. But I will not conside