Article Title: New School: Linux system hard drive path settings. Linux is a technology channel of the IT lab in China. Including desktop applications, Linux system management, kernel research, embedded systems, open source, and other basic categories. After the system is installed, the hard drive will be in/dev/sda, but after the array is connected, it is often changed to/dev/sdb, and thus cannot be started.
1. change/etc/modules. conf
Change the order of the scsci adapter to the following:
View raid information and disk information in CentOSSometimes you want to know how many disks are on the server. If raid is not performed, you can simply use fdisk-l to see it.But after raid, we can't see it. So how can I check whether raid is performed on the server?Software raid: can only be viewed in Linux Cat/proc/mdstat The raid level and status are displayed. Hardware raid: the best solution is to use the installed raid vendor's management tools to check whether there is a broken line or a
Tags: adr level meaning also charge spam disk array line GICSoftware RAID: can only be viewed by the Linux system itselfCat/proc/mdstatYou can see information such as RAID level, status, and so on.Hardware RAID: The best way to do this is through the management tools of the installed RAID vendors, with CmdLine and graphical interfaces. such as the Adaptec company's hardware card can be viewed by the following command:#/usr/dpt/raidutil-l AllYou can se
Software raid: you can only view cat/proc/mdstat on the Linux system to view raid level, status, and other information. Hardware raid: The best solution is to use the installed raid vendor's management tools to check whether there is a broken line or a graphical interface. For example, the hardware card of Adaptec can use the following command to view the software raid: you can only view cat/proc/mdstat through the Linux system itself to view the raid
between the iSCSI server and the storage device.Iscsi adapter cards are roughly divided into two categories: toe HbA cards and iSCSI HbA cards. The former is cheaper, while the latter is more efficient, but the latter is very expensive. Representative vendors include adaptec, alacritech, Intel, LSI, and Qlogic. Intel focuses on the development of toe HbA cards.
1.3. iSCSI target
Iscsi target is an iSCSI disk array that can be used to store data or a
Recently, a case of 4 disk SCSI raid0+1 data recovery, composed of 4 pieces of 36G SCSI. The client said it had done two sets of RAID1. After the failure, 3 disk offline in the RAID state.
According to my understanding, this should be two sets of logical disk (RAID1), that even if it is 3 disk offline, there should be a set of logical disk can work properly. However, the logical disk of the array is not re
Article Title: how to view soft and hard raid information in Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
How to view the soft and hard raid information in Linux. Software raid: can only be viewed in Linux
Cat/proc/mdstat
The raid level and status are displayed.
Hardware raid: the best solution is to use the installed raid vendor's management to
Sometimes you want to know that there are a few disks on the server, if you do not do raid, you can simply use the fdisk-l can be seen.But I did raid, so I couldn't see it. So how do I check the raid on the server?Software RAID: can only be viewed by the Linux system itself Cat/proc/mdstat You can see information such as RAID level, status, and so on. Hardware RAID: The best way to do this is through the management tools of the installed RAID vendors, with CmdLine and graphical interfaces.
-SCSI, the ATA device will be virtual as a SCSI host, and the host will be added to the SCSI Middle Leve drive layer, the same principle, the SCSI middle level driver layer will scan this virtual SCSI host, and then load the scan to get the driver of the device, this driver
or delete the files marked in the blue screen information.
(3) If the error message clearly states that win32k. sys is probably caused by a third-party remote control software, you need to disable the service of the software from the fault recovery console.
(4) When windows is restarted for the first time after Windows is installed: the biggest possible cause is that the disk space in the system partition is insufficient or the Biol compatibility is faulty.
(5) If a software is disabled, it is
Overview raid is the abbreviation of "Redundant Array of independent disk ".Independent redundant disk array. The redundant disk array technology was born in 1987 and was proposed by the University of California at Berkeley. Raid disk array (Redundant Array of Independent Disks)A simple explanation is to combine n hard disks with RAID Controller (hardware, software) into a single virtual large-capacity hard disk, the feature is that N hard disks speed up reading at the same time and provide Fau
has multiple speeds. Currently, SCSI drives can run at least rpm, which is faster than ide drives. In most cases, enterprise-level servers may adopt SCSI technology, which is a better choice.
Disk capacity
You can now get several larger GB drives. If you want to store a large amount of infrequently accessed data, there is no problem. However, the large disk capacity cannot be helpful for writing large amou
configuration to WinPE environment at startup to facilitate modification of system options and add configuration information (for example, adding system services and input methods, importing custom advanced tool configuration information, and so on).
Complete Driver Support :
Support USB 2.0 mass storage device (U disk, external hard disk) to facilitate data backup.
Built-in Intel, SiS, ALi, VIA, Adaptec, HP Compaq, DELL, MegaRAID, Pro
drives such as IDE, SAS, SATA, SCSI or iSCSI. If you need RAID, OpenFiler is compatible with Adaptec, LSI Logic, Intel, and other devices. In addition, it can process up to 60 TB of file systems. In addition, OpenFiler supports fast Ethernet controllers, 1-gigabit and 10-Gigabit Ethernet controllers from Intel and Broadcom.
OpenFiler Interface
Although OpenFiler has such good capabilities and compatibili
version of VSphere1 Standard EditionBasic server consolidation can be achieved2 Enterprise Editioncan significantly improve efficiency and resource management3 Enterprise Enhanced Editionpowerful flexibility, operability, stability, and controllability to transform the data center into a very simplified cloud computing environmentFour VSphere 's LicenseAfter ESXI installation is complete, the evaluation period is set by default , and users can convert from evaluation mode to licensing mode at a
Article title: Operating system FreeNAS0.69.2 released. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
FreeNAS is a small FreeBSD-based operating system that provides free network attached storage (NAS) services (CIFS, FTP, and NFS ).
Volker Theile has announced the release of FreeNAS 0.69.2, a maintenance update of the FreeBSD-based operating system providi
, diagnosis, and other operations.
At startup, the user-specified configuration is merged to the winpe environment registry to facilitate System Options modification and configuration addition (for example: add system services and input methods, and import configuration information of custom advanced tools ).
Complete Driver Support:
Supports USB 2.0 large-capacity storage devices (USB flash drives and external hard drives) to facilitate data backup.
Built-in intel, sis, Ali
I recently deployed a storage device with 6 TB of storage space and was ready to partition and format large-capacity storage.Since MBR partitions support a maximum capacity of only 2 TB, gpt partitions are required if the maximum capacity is 2 TB.
First, use the parted command to convert the hard disk to a gpt partition.----------------------[Root @ ~] # Parted/dev/sdbGNU parted1.8Using/dev/sdbWelcome to GNU Parted! Type 'help' to view a list of commands.(Parted)
Convert from MBR to GPT Disk----
How to view soft and hard raid information under Linux.Software RAID: can only be viewed by the Linux system itselfCat/proc/mdstatYou can see information such as RAID level, status, and so on.Hardware RAID: The best way to do this is through the management tools of the installed RAID vendors, with CmdLine and graphical interfaces. such as the Adaptec company's hardware card can be viewed by the following command:#/usr/dpt/raidutil-l AllYou can see ver
Software RAID: can only be viewed by the Linux system itselfCat/proc/mdstatYou can see information such as RAID level, status, and so on.Hardware RAID: The best way to do this is through the management tools of the installed RAID vendors, with CmdLine and graphical interfaces. such as the Adaptec company's hardware card can be viewed by the following command:#/usr/dpt/raidutil-l All You can see very detailed information.Of course, more often than not
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.