drivers are compiled using the RFC 2625 standard. this standard is mainly used to block IP/ARP packets through fiber channel. The fcip driver is a "Type 2" Data Link Service Provider ). All M_PROTO and M_PCPROTO data packets in the network are translated into DLPI data packets. An explicit DL_ATTACH_REQ information must be sent to a stream opened using a specific fiber channel port (PPA particle FC port, the ppa id is translated into an unsigned long data type. this ID is the instance number of
Failure phenomenon:
Article reproduced from EMC Chinese Support forum
PowerPath integrates multipath I/O, automatic load balancing, and path failover capabilities to make storage management easier. This article summarizes the use of PowerPath common commands for operational considerations, for host system administrators to the hba/path/port/disk device/Storage system to perform configuration, view, delete, save, restore and other operations
Introduction to memory card knowledge 1. Common memory card related concepts HBA and WWN first introduce what is HBA. The HBA mentioned here is the full name of fc hba, that is, the Fiber Channel Host Bus Adapter. In an FC network, when a host (such as a server) needs to be connected to an FC network or an FC storage d
specializes in network and server storage applications and is a leader in delivering enterprise-class storage system solutions. A wide range of PMC product lines, including Adaptecby PMC? RAID array cards and HBA cards, Tachyon? Sas/sata and Fibre Channel (FC) protocol controllers, RAID controllers, Flashtec? PCIE Flash Controller and NVRAM controller, Maxsas Extender and FC Platters Interconnect products,
VMware storage is not just as simple as mapping LUNs to physical servers. VMware vsphere allows system administrators to create multiple virtual machines on one physical machine.
Potential hypervisor and vsphere ESXi enable the guest virtual machine to simultaneously use both internal and external storage devices. This article will discuss the basics of building sans on vsphere and what administrators consider when deploying shared SAN storage.
VMware Storage: San Basics
Vsphere supports interna
space is shared with the previous business nodes in CIFS mode, and the two-tier architectures are scaled separately on demand. Second, the server's disks can support PCIe NVMe SSDs, SSDs, and hdd,s2d will default to the best-performing disks as storage bus caches (Storage bus cache), providing read/write caching for each node, as well as storing the metadata for the storage pool. This can be done automatically at configuration time or by manual desig
MySQL Database optimization Framework System1. Hardware-Level optimization2. Operating system level optimization3.MySQL Database Level optimization4.MySQL Security Optimization5. Optimization on the site cluster architecture6.MySQL process, System control optimization1Hardware-Level optimization1, Database Physical machine procurementCPU:64-bit CPU, 2-16 CPUs for a single machine. At least 2-4, L2 (cache) The bigger the betterMemory: 3-4 instances of 96-128g,mysql. 32-64g,1-2 instancesHDD: Machi
connectivity
The mobility and recoverability of server virtualization implementation depend on external shared storage, and these functions are most effective in SAN connection environments. Generally, virtual servers are deployed in the primary data center and the enterprise's storage resources are obtained through the fiber channel protocol. The high performance brought by fiber channel can meet the high I/O requirements of multiple virtual machines running on one server. SAN connections can
Work:
Iscsi host connectivity requires a hardware component, such as a NIC with a software component (iSCSI initiator) or an iSCSI HBA. in order to use the iSCSI protocol, a software initiator or a translator must be installed to route the SCSI commands to the TCP/IP stack.
A standard Nic, a TCP/IP Offload Engine (toe) Nic card, and an iSCSI HbA are the three physical iSCSI connectivity options.
A sta
, lsi70000xp, (4 GB)PCI-X: lsi7202xp, lsi7402xp (2 GB)Lsi7104ep, lsi7204ep
2>. co-existence with Qlogic and LSI failover drivers========================================================== ======================================The RDAC driver cannot co-exist with an HbA-level failoverDriver such as the Emulex, Qlogic or LSI logic HbA failover drivers.RDAC cannot coexist with fault-tolerant drivers of LSI or Q
process of storing I/O (hereafter referred to as I/O) is the process by which the computer reads data and writes data on the memory. This memory can be either non-persistent storage (RAM) or a persistent storage similar to a hard disk. A complete I/O can be understood as a data unit that completes the bidirectional process from the initiator to the receiving end. In an enterprise-class storage environment, this process passes through multiple nodes, and each node uses a different data transfer
please keep the original source at the beginning of the text: EMC Chinese Support ForumIntroducedHow many ways do Linux systems scan SCSI disks? Can I recognize a device without restarting the host after I have added a new LUN to Linux? What are the commands for dynamically adding/removing LUNs If PowerPath is installed? This article summarizes the way that Linux hosts reconfigure disk devices and attaches command instances.More informationThe Linux system provides multiple mechanisms to rescan
In discussing this issue, a problem needs to be made clear: we know that in the early San storage system, the data transfer between the server and the switch was done through fiber, because the server was transferring SCSI commands to the storage device and not the IP protocol of the normal LAN network, so it needed to use FC transport. So the SAN is called Fc-san, and the late advent of the San with the IP protocol package, you can completely walk the normal LAN network, so called Ip-san, which
informationStorage I/O streaming vs. storage performance:The process of storing I/O (hereafter referred to as I/O) is the process by which the computer reads data and writes data on the memory. This memory can be either non-persistent storage (RAM) or a persistent storage similar to a hard disk. A complete I/O can be understood as a data unit that completes the bidirectional process from the initiator to the receiving end. In an enterprise-class storage environment, this process passes through
efficient computer group.respective URLs: www.ccixconsortium.comhttp://genzconsortium.org/www.opencapi.orgExcerpted from Ccix,gen-z,pencapi_overviewcomparison.pdfCCIX physical media is based on PCIE3.0 for processor and accelerator full cache consistency for low latency memory expansion, CPU acceleration, and networked storage.Gen-z, however, focuses on the acceleration of inter-connection consistency between frames, supports the PCIe physical layer
Hyper-v Server Virtual Fiber ChannelThe new virtual Fiber Channel (VFC) in Windows Server 2012/R2 enables Hyper-vclient to access the physical storage host bus adapter (HBA) installed on the Hyper-V Server ). Generally, Hyper-VPC is equipped with storage adapters. However, with the help of this new feature, all Hyper-V 3.0/4.0 clients with the corresponding O/S level can access the HBA and directly connect
When discussing this issue, we need to clarify one question first: we know that in the early SAN storage system, serversAndThe data transmission of a vswitch is performed through optical fiber cables. Because the server transmits SCSI commands to storage devices and cannot use the IP protocol of a common lan network, FC transmission is required.It is called the FC-SAN, and later appeared with the IP protocol encapsulation of San, can completely take the common lan network, so called the IP-SAN,
Disk back panel: Eclectic
In the tower server where the rack server or the hard drive slot is higher, the SAS Hba/raid card is generally not connected to the hard drive directly with the SAS cable, but through the disk backplane to facilitate the hard drive Plug and unplug. Disk Backplane is also a typical internal connection application, one side of the hard drive, the other side even Hba/raid card. Drive
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