megaraid

backup, and virus scanning and removal tools ). At startup, a user-defined third-party application is executed on the frontend or backend to complete additional information interaction, management, 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 adva

# AMI megaraid # Device ASR # DPT smartraid V, VI and adaptec SCSI raid # Device CISS # Compaq smart RAID 5 * # Device DPT # DPT smartcache III, IV-See Notes for options # Device IIR # intel integrated raid # Device IPS # IBM (adaptec) serveraid # Device mly # mylex acceleraid/extremeraid # Raid Controllers # Device AAC # adaptec FSA raid # Device aacp # SCSI passthrough for aac (requires cam) # Device Ida # Compaq smart raid # Device mlx # mylex dac

View hardware information in linux and hardware in linuxDmidecode | grep Name is used to view various hardware information of a machine, such as cpu, memory, and network card.Lshw-short | egrep 'cpu | 4GiB DIMM | eth'Lshw-short | grep '4gib DIMM '| wc-l check whether the disk is an ssd/Opt/MegaRAID/MegaCli/MegaCli64-PDList-aAll | egrep 'raw Size | SSD'View the memory status. The total amount of memory is free-g.How to view hardware information in Linu

(config_ip_nf_target_redirect) [Y/n/?]Log target support (config_ip_nf_target_log) [Y/n/?]ATA/IDE/MFM/rll support (config_ide) [Y/n/?]* IDE, ATA and atapi Block devicesEnhanced IDE/MFM/rll Disk/CDROM/tape/Floppy support (config_blk_dev_ide) [Y/n/?]Include IDE/ATA-2 disk support (config_blk_dev_idedisk) [Y/n/?]Use multi-mode by default (config_idedisk_multi_mode) [Y/n/?]Include IDE/atapi CDROM support (config_blk_dev_idecd) [Y/n/?]* SCSI supportSCSI support (config_scsi) [Y/n/?]* SCSI support ty

[2.223621] raid1: raid set md2 active with 2 out of 2 mirrors [2.226764] raid1: raid set md1 active with 2 out of 2 mirrors [2.268897] md: raid6 personality registered for level 6 [2.268899] md: raid5 personality registered for level 5 [2.268901] md: raid4 personality registered for level 4 [2.273807] md: raid10 personality registered for level 10 view the three lines of raid1. my dell server hardware raid uses dmesg | grep-I raid results: [4.051200] megaraid_sas. 0: pci int a-> GSI 38 (level,

disk media in a timely manner, so there is no charge/discharge problem. Read/write ratio: The HP Smart Array provides the difference between read and write to the cache (Accelerator Ratio),HPACUCLI Ctrl all show config Detail|grep ' Accelerator Ratio 'Accelerator ratio:25% read/75% WriteThis allows you to set the ratio of cache read and buffer write caches to the actual application. Turn on direct IO In order to enable the upper device to use direct IO to bypass the

of SDB in both drives is already 100%, there is a serious IO bottleneck, and the next step is to find out which process is reading and writing data to this hard drive. 2.3 iotop based on the results of iotop, we quickly locate the problem of the flume process, resulting in a lot of IO wait. But at the beginning I have said that the machine configuration in the cluster, the deployment of the program is the same as rsync, is the hard drive broken? this has to find the operation of the student

6 ports 3 Gbps 0x3f impl RAID mode Megaraid_sas in T A-> GSI (level, low)-> IRQ Megaraid_sas 0000:04:00.0:setting Latency timer to $ MEGARAID_SAS:FW state:c0000000 Scsi6:lsi SAS based MegaRAID driver [root@localhost ~]# CAT/PROC/SCSI/SCSI Attached devices : host:scsi6 channel:02 id:00 lun:00 vendor:dell Model:perc 6/INBSP;NBSP;N bsp; rev:1.11 type: direct-access ansi SCSI revision:05 View network adapters The code

write to the cache (Accelerator Ratio),HPACUCLI Ctrl all show config Detail|grep ' Accelerator Ratio 'Accelerator ratio:25% read/75% WriteThis allows you to set the ratio of cache read and buffer write caches to the actual application. Turn on direct IO In order to enable the upper device to use direct IO to bypass the raid card, the raid needs to be set to open Directio mode:/opt/megaraid/megacli/megacli64-ldsetprop-direct-immediate-la