emc hba

is received, allowing the window to slide across the entire data stream for transmission. Handling lost acknowledgment information: But the lost 42-45 how to deal with it. Before the 3rd paragraph (37-41) is received, the receiving device does not send a confirmation message, nor does it send a confirmation of the byte after the paragraph. The sending device can add new bytes to class 3rd, which is 52-56. After sending the device, it stops sending, and the window stays at 37-41. TCP includes

With the rise and development of the concept of cloud computing in recent years, the virtualization technology of various data centers has been paid more and more attention, among them, the server virtualization solution represented by VMware, Citrix and other vendors is undoubtedly the most widely applied architecture as a service (IaaS) cloud computing implementation method in the private cloud field of enterprises. However, with the deepening of server virtualization deployment, IT administra

is not supported, and I/O is interrupted until the 2.6 kernel supports dynamic scanning, however, the kernel does not provide commands to dynamically reconfigure SCSI devices, such as HPUX ioscan. Therefore, the only method is: ◆ restart OS ◆ re-load the HBA driver and use the modprobe ◆ 2.4 kernel configuration/proc tool, for example: # echo "scsi add-single-device 0 1 2 3">/proc/scsi ◆ 2.6 kernel run/sys scan, for example: # cd/sys/class/scsi_host/

. 4. modify data files[S @ ~] Mv/database/pgdata. old[S @ ~] Mkdir/database/pgdata 5. initialize the database[S @ ~] $ Initdb-D/database/pgdata-E UTF8 -- locale = C-U postgres-W 6. Copy the old postgresql. conf and pg_cmd.conf files to the new $ PGDATA file.[S @ ~] $ Cp/database/pgdata. old/postgresql. conf/database/pgdata/postgresql. conf[S @ ~] $ Cp/database/pgdata. old/hba. conf/database/pgdata/hba. conf

network. Therefore, existing mature network management mechanisms can be extended, making it very convenient and easy to build, manage, or maintain. We will build a simple iSCSI-Based ip san, 1. Figure 1 shows a simple ip san structure. In this example, a Gigabit Ethernet switch is used to build a network environment consisting of a non-linear workstation, a file server, a disk array, and a tape library. Figure 1 connect servers and switches using the iSCSI multicast host Bus Adapter and host

I. Basic architecture of Fiber Channel FC-4 Upper Layer Protocol: SCSI, HIPPI, SBCCS, 802.2, ATM, VI, IP The FC-3 common service FC-2 (Framing Protocol/Flow Control) FC-1 Encode/Decode FC-0 Media: Optical or copper, 100 MB/sec to 1.062 GB/sec Description: FC-0: physical layer, customized for different media, transmission distance, signal mechanism standards, also defines the optical fiber and copper interface and cable indicators FC-1: defining encoding and decoding standards FC-2: defines frame

Confirm that the DNS service is working properly Y Y VM Reverse resolution includes servers such as Addc/ddc/pvs to get the correct IP address Confirm AD/DDC/SQL/PVS/VM Time Synchronization Y Y Enable the NTP service to confirm time and time zone consistency Running Windows Update update for Windows virtual machines R Y Http://update.microsoft.com Http://www.xiazaiba.com/html/4041.ht

First zone members are two WWN numbers, one is the HBA card on the server and one is the HBA card on the storage. You specify a vsan when creating a zone. The I/O between sever and storage does not change, regardless of the cable on the switch.The members of the Zonset are zone, and Vsan is also specified.The members of the Vsan are ports, such as FC1/1, FC1/2.The initial time all ports belong to Vsan1, but

, -- compact-listAnd uids commands to limit output toSpecific device.-M | -- vmfs Print mappings for VMFS volumes to theirService Console partitions and vmhba names.-F | -- vfat Print mappings for VFAT volumes to theirService Console partitions and vmhba names.-A | -- hbas Print HBA devices with identifying information-A | -- hba-device-list Print a mapping between HBAs and the devices itProvides paths.-O |

RAID 1 or RAID 10,raid 5 and 50 for data volumes in a single host server architecture pattern with inherent write performance penalties. Therefore, it is generally not recommended to use these levels for virtualized environments.Storage controller Architecture: A storage controller can be a server add card, such as a SCSI or SAS controller, or it can be a component of a mid-tier to a high-end storage array. The storage controller provides an interface between a disk drive and a server or storag

1. Remove the HBA fiber of rac2, interrupt rac2 and storage cabinet, and find that rac2 reboot and Rac1 work normally. [Oracle @ racdb01 ~] $ Crs_stat-TOra. RAC. DB application online racdb01Ora... s1.inst application online racdb01Ora... s2.inst application online offlineOra... sm1.asm application online racdb01Ora... 01. lsnr application online racdb01Ora... b01.gsd application online racdb01Ora... b01.ons application online racdb01Ora... b01.vip ap

and pg_cmd.conf files to the new $ PGDATA file.Postgres@www.bkjia.com ~ $ Cp/database/pgdata. old/postgresql. conf/database/pgdata/postgresql. confPostgres@www.bkjia.com ~ $ Cp/database/pgdata. old/hba. conf/database/pgdata/hba. conf 7. Start the databasePg_start-- If the database is exported and restored from a single database, create a database and related users, saving the trouble of importing an error.

Device Specific.(Z1)........00000000 Device 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

Configure multi-path replication in CentOS 6.3 1. Determine whether the system follows the multipath rpm-qa| grep device-mapper-multipath 2. Reload the new HBA storage (this step is not required if it is not the HBA storage) modprobe-rlpfc modprobelpfc 3. Install multipath yum install device-mapper-multipath 4. Check whether the multipath is correctly loaded. If not, run the following command or restart

problems orMisconfiguration, excessive I/O being requested by SQL Server, DataFiles NotOptimally placed on the disk, and fragmentation.I/O subsystem The first thing to do is to examine the I/O subsystem. hardware errorsAre a common cause and you shoshould run diagnostics if you are at allSuspicious that this might be the case. Two common reasons for poor I/O throughput on a San are out of dateFirmware, and insufficient queue length on the HBA. Be awa

Cisco UCS 62XX firmware upgrade for personal useBecause again to some blades, the new blade firmware different, the version is very new, some can be downgraded to the current use of 2.2.1b, some do not know why not down ...More fixed bug, compatible with Vmware6, so upgrade ...Main preparatory work:1, confirm that the machine is running well, there are no major errors;2, check your profile file, confirm their network card and HBA card how to go (I am

access; # Modifying the configuration file requires restarting the service. [email protected]_master ~]# sed-i "s| #listen_addresses = ' localhost ' |listen_addresses = ' * ' |g '/var /lib/pgsql/9.6/data/postgresql.conf3.Host authentication# after the 82nd line, "IPv4 local Connections" under the new allowed clients; # "Host" on behalf of the host type, the first "all" for the DB, the second "all" for the user, "172.29.3.67/32" on behalf of the client IP, "trust" on behalf of the authenticatio

===================================================================================-----------------------------------------------------------------------------------# 1.1 Calibrate_io Test-----------------------------------------------------------------------------------SELECT D.name,I.asynch_ioFrom V$datafile D,V$iostat_file IWHERE d.file# = I.file_noand i.filetype_name = ' Data File ';--enabled both direct I/O and asynchronous I/O where possible.ALTER SYSTEM SET Filesystemio_options=setall sc

lifecycle management) and storage software departments of StorageWorks company. Frank Harbist, general manager of Hewlett-Packard's ILM and storage software business, said the company had worked with Outerbay for more than a year and had Habister a roadmap ... But the company plans to integrate more deeply into the next 1-2 quarters, while the products are loosely tied. Outerbay is also working closely with storage giant EMC to publish a system desig

Problem Statement Storage design is an important part of virtualization design, and determining the appropriate storage type is a key step in the deployment of storage design. Fc/fcoe, ISCSI, NFS and even local Storage, which one would you choose? See figure below. Requirements Customers need to migrate physical servers to VMware virtualization platforms, many physical servers using FC Sans, and some San disk capacity greater than 2T. Some of these servers run Ms Cluster Service. Some app