server scsi hard drives

-compatible, their cables seem to be similar. However, SAS cables can be 6 meters long, six times the SATA cable length limit (1 meter. As mentioned earlier, the cable terminals are the same.In addition to speed differences, SAS has a very prominent advantage over SCSI. In SCSI technology, different types of devices are connected into a chain, and all devices run at the slowest speed. In SAS technology, thi

* 147456 bytesDevice Boot Start End Blocks Id System/DEV/SDD1 * 1 889 127983+ b Win95 FAT32Partition 1 has different physical/logical endings:phys= (+, 8, logical=) (888, 7, 31)The system has a SCSI hard disk/DEV/SDD and a disk partition/dev/sdd1./DEV/SDD1 is the USB drive we are going to hook up with, mount it with the following command:Copy CodeThe code is as follows:#mkdir-P/MNT/USBNote: Create a direct

Hyper-V2: adding virtual hard drives, hyper-v2vm to VMS Use Hyper-V to create a VM. After the VM is successfully installed with the OS, it is found that the VM has only one logical disk C, which is used to store the operating system of the VM. In the product environment, you need to add virtual hard disks to the VM to store data separately in different logical dr

How to install the guidance module for multiple hard drive Windows USB flash drives in your laptop !, Win7x0tos7 CentOS7 has been used on virtual machines for a while and has been idle recently, just like installing a win7 and Centos7 dual system in your laptop to experience the effects of the following physical machines, after several twists and turns, we finally installed the WIN7 and CentOS7 dual systems

Create a virtual hard disk1. Close the virtual system that is running in the VM;2. Right-click on the virtual system name-"virtual machine Settings;"3. Hardware Page "Add"-"Add a hard disk-" Create a new virtual disk-"SCSI (recommended)-" Allocate space size-"OK;4, you can see a new hard disk drive in the hardware 2.Fi

pieces of hard disk?How many hard drives do RAID5? Simple to say: the so-called RAID5 is the use of more than 3 (including 3 hard drives) to do an array, of which two disk is the actual capacity, among which there is a disk as a spare, 3 disk agreed to a bad piece of disk,

the LUN is 172032 sectors. Use data Recovery tool to jump to 172032 sectors to observe the use of the hard disk, normally this sector belongs to the strip of the 5th plate should be the check area, but the actual situation shows that the check area is 8th, according to the rules of the raid left, the check area of the 5th plate should be at 172032-1024 = 171008 sectors, that is, the previous stripe. Jump to 171008 sectors and find the check area is n

use the DF command to view。DF is from the Coreutils software package, the system is installed, it comes with, we can use this command to see the disk usage and the location of the file system is mounted;Example:[Email protected] ~]# df-lFile system capacity has been used with available% mount points/dev/sda3 4956316 3565088 1135396 76%/Tmpfs 241320 241308 1%/DEV/SHM/dev/sda6 4806904 2523708 2039012 56%/media/disk/DEV/SDA1 4956284 3529796 1170656 76%/media/_/dev/sda5 4845056 2581484 2019388 57%/m

rpmdy2c1d0arxhkj30oyefa65mbpwljzcckobxrfaxmxbkyuphlhtzvau5fv42psq0y=====================================================Go onAfter installing the system, the 3T hard disk display is not complete,650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/6E/47/wKioL1V4HDDiGoupAACWzXKbV-k965.jpg "title=" 3.jpg " alt= "Wkiol1v4hddigoupaacwzxkbv-k965.jpg"/>Using "partition,partition-tool,partitionmagic10.1 and 64-bit versions is not a solution,650) this.

1. Add a hard disk to the settings of the virtual machine. setting, add disk, create a new virtual disk, SCSI set size, here to 3G; change the name, I use this hard drive to install Oracle, named ORADATA.VMDK 2. Formatting Hard disk. [root@yaokj ~]# fdisk -l /dev/SDB Disk /dev/sdb: 2147 MB, 2147483648 byte

I believe that the small partners have had such a problem, that is, the Linux server upload files too slow, but also affect the remote operation of course this can be done through the local hard drive to solve, but when you insert the hard disk, Mount Mount, There will be error errors in the approximate content is unable to mount NTFS-formatted partition, in fact

.jpg" height= "263" border= "0"/>Because I use the virtual machine, here is just to show you.In the Linux CD file we also see the EFI driver650) this.width=650; "Style=" background-image:none;border-bottom:0px;border-left:0px;padding-left:0px; padding-right:0px;border-top:0px;border-right:0px;padding-top:0px; "title=" clip_image012 "alt=" clip_image012 "src = "Http://s3.51cto.com/wyfs02/M00/74/14/wKiom1YSnmPiisAgAABvMC_Rxe4231.jpg" height= "border=" 0 "/>This article is from the "Little Rookie"

other ways to specify the size of the partition) to this setting is done but note (now the partition is not saved now direct exit is not effective) W Save Q Exit After completion of the format Mkfs-t EXT4/DEV/SDB4 or MKFS.EXT4/DEV/SDB4 can then be manually mounted or added to the/etc/fstab file as described above to automatically load the boot, of course we can also mount-t ext4/d Ev/sdb4/data write to the file loaded after the Boot/etc/rc.local command: echo "mount-t ext4/dev/sdb4/data" >>/etc

implementation is the idea is to capture esxi data, and then encapsulate a Zabbix_sender class, the data to Zabbix sender, which has two scripts in the attachment, the function is as follows: get_disk_info.py: Obtain disk data from VC and generate the corresponding format (because the low level discovery required data is JSON) where to set more places, such as the VC address, user name, password and Zabbix information. zabbix_send.py: The primary is to encapsulate the data and send it to the

itself. You do not need to buy a controller. You only need to buy a drive, which includes the Controller to achieve UDMA performance. Disk drives often overlook the speed of disks. The disk speed is measured in rpm, which indicates how many times a disk is rotated per minute. The larger the rpm, the faster the disk speed. If you have a budget for this, most server system vendors can provide 7500rpm or even

control array cabinet to the array card installed in the PCI slot of the computer. Then one end of the cable is connected directly to the SCSI port in the computer's motherboard, not to the disk array card, the other end is still connected to the disk control array cabinet, and the computer is powered up, Let the Windows Server system to scan the hard drive agai

may be unnecessary for program partitions that do not change frequently like/usr, but it can create a miracle in the/home partition of a multi-user system. It takes the same time as the disk fragmentation of the Windows NT Server.　If the disk performance is still unsatisfactory, there are many other steps to consider, but any hardware solution that includes upgrading or purchasing new devices may be expensive.　　　3. upgrade from IDE To

the entire image process, only half of the disk capacity is valid (the other half is used to store the same data ). Compared with raid 0, raid 1 First considers security, halving the capacity, and changing the speed.Raid 0 1To achieve high speed and security, raid 10 (or raid 0 1) can be simply split into a raid 0 array consisting of multiple disks for mirroring.Raid 3 and raid 5Both raid 3 and raid 5 are verified. Raid 3 uses a disk to store verification data. The corresponding data verificati

better meet virtualized load requirements.4) improves application and load performance, especially on physical disks that have a sector size greater than 512 bytes.5) Support for storing custom metadata. For example, you can record the operating system version, or the patch information that has been installed.6) Use Windows PowerShell commands on the computer running Hyper-V to configure and manage the virtual disks.7) In the virtual hard disk format