if the value of await is much higher than the value of SVCTM, the I/O queue waits too long for the applications running on the system to become slower.- C parameterIostat can also be used to get CPU partial state values:Iostat-c 1 10avg-cpu:%user%nice%sys%iowait%idle1.98 0.00 0.35 11.45 86.22avg-cpu:%user%nice%sys%iowait%idle1.62 0.00 0.25 34.46 63.67Common usageIostat-d-K 1 #查看TPS和吞吐量信息 (disk read and write speed in KB) iostat-d-M 2 #查看TPS和吞吐量信息 (disk read and write speed in MB) iostat-d-x-k 1
Dell server operations
1. Raid problems:
# Deleting existing Raid configurations
MegaCli64-CfgLdDel-LALL-aALL
# Obtain the device ID and Slot Number
MegaCli64-PDList-aALL | egrep 'enclosure Device ID | Slot Number '| awk 'nr % 2 = 0 {print $3}; NR % 2! = 0 {print $4 ;}'
# Create Raid5, $ sdaslots is the disk ID and slot number used to create Raid that meet the parameter requirements. The size is 500 GB.
Meg
, originally this may be related to the hard disk, that driver 0 is not the hard disk in the BIOS ID number? Is there a problem? The server uses a RAID5 array that has broken a hard drive and can continue to serve. (The server's hardware is compared to the old Powerage 850 's machine)
The next morning came to the office early, the Dell after the After-sale technical support, explained the situation, Dell's
Boot Disk download link: http://support1.ap.dell.com/cn/zh/forum/thread.asp? Fid = 15 tid = 261838
Note: using the dosa cd to boot and install the server system will cause all data on your server's hard disk to be lost. Therefore, this method is only for the installation of brand new servers and servers with the premise that data is backed upThis installation method only supports the retail version of the operating system and is integrated with SP2.
The unit's new Add 5 Blade service card, 3 M630 and 2 M820. My system is loaded with Windows 2008R2One of the M630 today temporarily said to connect the public network and to distribute the network IP, do a good network cable and external network connection, with the laptop input public IP after the test is normal, but even on the M630 network card even lights are not bright, it is called an egg pain.Toss for a long time to find out why:I just server
Dell server related operations
1. Raid problems:
# Deleting existing Raid configurations
MegaCli64-CfgLdDel-LALL-aALL
# Obtain the device ID and Slot Number
MegaCli64-PDList-aALL | egrep 'enclosure Device ID | Slot Number '| awk 'nr % 2 = 0 {print $3}; NR % 2! = 0 {print $4 ;}'
# Create Raid5, $ sdaslots is the disk ID and slot number used to create Raid that meet the parameter requirements. The size is
Recent projects require access to DCN and OA respectively on the Dell server, with the IP addresses 132.109.32.70 and 10.16.177.70 respectively.
At the same time, you can access the Intranet of the 132 switch, but you cannot access the OA network. After the proxy is set, it still cannot be solved. Run the CMD command route print to print the route table.
The routes of the two IP addresses are directe
Explain various raidRAID0:It's usually done with two plates.Write a file on two plates, respectively.This improves read and write speed.But it is not redundant and cannot be recovered by backup after data lossRAID1:It's done with two plates.That's what they call a mirror.Backup for each otherOnce a piece of data is lost, it can be recovered by another pieceRAID5:At least three plates requiredRAID5 is a compromise between RAID0 and RAID1.So it's 10/2=5.20170713l08-00 old boy Linux OPS training-
If the total capacity of the hard disk is greater than 2T, the system cannot be installed in MBR format.Use GPT formatYou can't use Fdisk to partition it at this time.To use parted to partitionMore than 2t hard disk partition, the old boy video used to 5 pieces of 600G hard diskThere are several ways to install the systemI only remember two of them.Method One: Take 2 pieces of RAID 1 for the remaining 3 pieces to do RAID5Method Two: All made RAID5, then the logical partition installation system2
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