raid card for ssd

When asked whether traditional raid can be built on SSD, the first response should be "yes, but trim command support is required ". On the Internet, we can also see that many people use SSD to create raid, but basically it is configured as RAID 0 or

Can traditional RAID be built on SSD? When asked whether traditional RAID can be built on SSD, the first response should be "yes, but Trim command support is required ". On the Internet, we can also see that many people use SSD to create

, while the 0,1 and 1+0 three levels support IDE RAID. The so-called RAID 0 is based on at least two hard drives, in IDE raid, it takes CPU time to divide the data stream into chunks of the same size, and then distributes it evenly to two hard drives to complete the transmission; the so-called RAID 1 is to occupy CPU p

Linux RAID card optimization and Linux raid OptimizationIntroduction Our production servers often use raid storage. But can raid alone ensure high performance and data security? The answer is no. We generally recommend using raid

current BBU properties # megacli-adpbbucmd-getbbuproperties–aall View charge Progress percentage # megacli-adpbbucmd-getbbustatus-aall |grep "Relative State of Charge" query RAID array number # Megacli-cfgdsply-aall |grep "Number of disk GROUPS:" Display RAID card model, RAID settings, DISK related information # me

Conclusion 1:SSD card significantly improves the disk Io,io occupancy under 50% 2:SSD card makes MongoDB performance stable.In the case of 200 concurrency, the data volume is 5 times times the amount of memory and still guaranteed 1500 insertions per second and 4,500 queries. The data is as follows: 1: IO completion pe

:00.0[[email protected]:~] Ethtool-i VMNIC7DRIVER:BNX2XVERSION:1.78.80.V60.12FIRMWARE-VERSION:BC 7.8.55bus-info:0000:11:00.1Gets the type of driver currently used by the host bus adapter[Email protected]:~] esxcfg-scsidevs-avmhba0 lsi_mr3 link-n/a sas.500605b00cbce9e0 (0000: 07:00.0) LSI megaraid SAS Invader Controllervmhba32 iscsi_vmk online iqn.1998-01.com.vmware:594af84f-3e99-cb7d- F42F-E04F43072844-7704B070ISCSI Software Adapter------------------------------------------------View Radi

Landlord office computer, originally only configured a piece of mechanical hard disk, with always very uncomfortable, so persuaded the leader to add a block SSD SSD.The operation is as follows:1, the PE under the partition format of the new solid-state drive, the original mechanical hard disk of the C-disk ghost backup and restore to a new solid-state drive;2. Remove the original C drive letter (drive letter: C, D, E, F) and cancel the active state;3.

protected] robin]# Megacli-pdlist-aall# # #有如下样式的几段, which shows the actual number of hard drives (below is a piece of 500G SSD information)Enclosure Device id:32Slot Number:3Drive ' s postion:diskgroup:0, Span:1, arm:1Enclosure position:0Device Id:3wwn:50025388a0061518Sequence Number:2Media Error count:0Other Error count:0Predictive Failure count:0Last predictive Failure Event Seq number:0PD Type:sataRaw size:465.761 GB [0x3a386030 sectors]Non coerc

Tags: Description enc require start nal alt next improve other Recently encountered a strange problem Receive SMS alert says disk IO is very high replication latency Iostat-x 1 10 information is as follows: The QPS is as follows: The load is very low pressure is very low this is very no solution. Only one MySQL Actually, it's a hardware problem.Megasas RAID card BBU learn cycle backgroundRecently encou

Recently, the customer needs to change the server. The customer sent the purchased server to a very small server. But when I saw it, it was a big, long, wide server, similar to the server in the data center, later, Mr. Mi gave a general explanation: This is a blade server. A blade server is a low-cost server platform that can be inserted with multiple card-type server units in a standard-height rack-mounted chassis to achieve HAHD (High Availability a

the same as those on a single hard disk. The difference is that the storage speed of the disk array is much higher than that of a single hard disk, and automatic data backup can be provided.Two features of RAID technology: First, speed Second, security Thanks to these two advantages, RAID technology was applied to hard drive systems with SCSI interfaces in advanced servers in the early days. With the devel

IntroductionOur production servers often do raid storage, but can you guarantee performance and data security by simply doing raid? The answer is no, we generally recommend the use of battery-protected raid cards, so as to ensure that performance can ensure data security, but also need to maintain the battery frequently, because of the cost of the general

IntroducedOur production servers often do raid storage, but can you guarantee performance and data security by simply doing raid? The answer is no, we generally recommend the use of battery-protected raid cards, so as to ensure that performance can ensure data security, but also need to maintain the battery frequently, because of the cost of the general

Dell PERC 201710p import RAID card array information Dell PERC 201710p import RAID card array information 1. Unplug the hard disks of one server (A) and insert them to another server (B) with the same configuration in the same order) 2. Start the server (B) 3. Press ctrl + R on the keyboard prompt To Go To The

A new Linux server is being taken, ready to check for configuration raid.check for a RAID card first: Copy Code code as follows: # Dmesg|grep-i raid Mptsas:ioc0:attaching RAID volume, Channel 1, ID 0 Device-mapper:dm-raid45:initialized v0.2594l Md:autodetecting

Operations on RAID can result in data loss, so be sure to back up important data properly before you operate.Name Explanation:Disk Group: A set of disks, which is equivalent to an array, such as configuring a RAID5, which is a disk groupVD: Virtual disk, Virtual disk can not use the full capacity of the array, which means that a disk group can be divided into multiple VDPD (Physical Disk): physical disksHs:hot Spare Hot StandbyMGMT: ManagementPost Pre

The same thing that I see is the case of the RAID card LSPCI stands for list PCI. Think of this command as "LS" + "PCI". This would display information about all the PCI bus in your server. Apart from displaying information about the bus, it'll also display information about all the hardware devices Connected to your PCI and PCIe bus. For example, it would display information about Ethernet cards,

A few days ago, Huawei Server RH2288 H V2raid card has no battery, or no capacitance, will report the following error:650) this.width=650; "src=" Http://s1.51cto.com/wyfs02/M01/78/40/wKiom1Z46WjTU2sxAAT5wWzFfXo170.jpg "title=" 5a616ca422db75c19624825f914acfec.jpg "alt=" Wkiom1z46wjtu2sxaat5wwzffxo170.jpg "/>It's a little blurry, but you can see it.There are 2 ways to check if the server has batteries or capacitors: There is a ESN on the serve

Sometimes CentOS Linux kernel does not have a RAID card driver, can only be loaded with floppy disk drive, in fact, there are other methods, as long as the appropriate driver to find the official, the RAID card is now a lot of brands, but most of the independent RAID