best ssd for sata2

Tags: SAS XFS SSDAn OLTP performance comparison test was previously done: SAS vs SSD various modes MySQL TPCC OLTP comparison test results, this time to do the OLAP comparison test.The comparison test results are shown below:650) this.width=650; "Src=" http://dp.imysql.com:8080/files/upload_yejr_imysql/SAS_VS_SSD_MySQL_OLAP_benchmarking _20121225.jpg "style=" border:0px; "alt=" sas_vs_ssd_mysql_olap_benchmarking_20121 "/>The corresponding performance

SSD solid-state hard drive How to optimize the use of solid-state hard drives more slowly how to do? Today, this article mainly with the introduction of SSD solid State hard drive optimization of some knowledge, mainly for some netizens often said they buy the solid-state hard disk speed is not fast, or feel that the SSD and traditional HDD hard drive gap betwe

No solid-state drive, fast CPU, and then a powerful graphics card, are useless, because of the "barrel principle", the bottleneck is here ah. Today's SSD prices have fallen a lot, I remember last year I bought a 120G SSD is nearly 600 yuan, and now only need less than 400. The way I introduced the SSD and transfer system is simple (and very safe), but still need

One problem for users who want to equip their old Mac with a third-party SSD (SSD) is that the OS X system does not turn on TRIM support for Third-party SSDs. TRIM is a system-level command that allows the operating system to communicate with solid-state drives to determine which of the SSD is pleasing and not used, and is ready for erasure and replication. If th

http://blog.csdn.net/killmice/article/details/42745937 The test tool FIO is read sequentially as an example, with the following commands: fio-name IOPS-RW = Read-bs = 4k-runtime = 60-iodepth 32-filename/dev/sda6-ioengin E Libaio-direct = 1 where rw = read for random reads, BS = 4k for each read 4k, filename specifies the corresponding partition, here I am/dev/sda6, direct = 1 means the cache through Linux Test SATA Hard Drive, SAS hard drive, SSD har

Recently has been engaged in the object detection play, before using the FASTER-RCNN, the accuracy of 73.2%, the effect is good, but the recognition speed is a bit short, I use the GPU is gtx980ti, recognition speed is about 15fps. Recently discovered SSD ( Single shot Multibox detector) This paper has a good effect and speed, I have experimented with it, the speed is indeed much faster than FASTER-RCNN. The following is a two-part introduction. The f

MyISAM tables [1000000]--mysql-create-options=string additional options passed to create TABLE [] Sysbench test on SSD first:The MY.CNF configuration is as follows:[Client]Port= 3306Socket=/ssd/mysql5.5/mysql.sock[mysqld]Port= 3306Socket=/ssd/mysql5.5/mysql.sockdatadir=/ssd/mysql5.5/databack_log= 50Character-set-files

For more information about how to use an ssd hard drive to accelerate mysqlindex, see www.javaarch.netjiago ushiindex.htm? If the data volume is large and the ssd capacity is not large, you can save the index data to the ssd to store the table data on the old hard disk .? So how can we make mysql build index on ssd and

In fact, the frozen phenomenon of solid-state hard disk is not concentrated on the SSD, but the whole problem related to the hard disk, many users think that the crash itself is the problem of solid-state hard disk, we in today's article also together to analyze what is the problem of the system crash. SSD freezes cotton How to do solid state hard disk use detailed Let's take a look at the crash prob

I talked to users and vendors about how SSD (solid state drive) is used, I found that most people think that server SSDS must be ultra-high-performance SLC (single-layer unit) PCIe flash cards manufactured by manufacturers such as Fusion-IO, micron, Virident, or LSI. Although most people know that the mainstream SAS or SATA interface SSD is in the 2.5 inch format, they seem to think that these devices are o

: This article mainly introduces how to install lubuntuubuntu to optimize tmpfs, which causes startup failure of apache2nginx. if you are interested in PHP tutorials, please refer to it. When SSD is optimized,/var/log is placed in the ramdisk of tmpfs. restart causes the apache2 and nginx directories in/var/log to be lost, and apache2/nginx cannot be started. Solution: in ~ /. Create these two directories in ~ /. Add at the end of bashrc. (Oh, use

The biggest difference between SSD and HDD is that it does not have the necessary mechanical parts of the HDD, the disc, the head rocker arm, which is determined by the different working principle of two kinds of hard drives. SSDs save time in mechanical parts movement compared to HDDs, and the primary storage element NAND flash used by SSDs is an electronic component, so its data travels much faster than HDD.In addition, according to the test, the HD

://github.com/kingliantop/azurelabs/tree/master/AzureChinaARMTemplate/VM-multiple-datadisks-SSDWhen creating an arm template, if you want to pass in parameters to decide how many virtual machines to create, you need to be aware of the various mutually exclusive resources, such as NICs, such as IP addresses, because once these resources are assigned to the first virtual machine, they cannot be assigned to the second virtual machine, or they will get an error:For scripts that automate the creation

1. SizeThe M.2 standard allows modules with widths of 12, 16, 22 and MM, lengths of 16, 26, 30, 38, 42, 60, 80, and MM. Commercially available m.2 modules are available in sizes of 30, 42, 60, 80 and MM respectively.eg:2242 22mm Width 42mm length2260 22mm Width 60mm length2280 22mm width 80mm long common　　　　2. Interface　　The typical m.2 SSD interface has b key,m key or Bm key.　　3. Motherboard Slots(1) Socket2 corresponding to B key(2) Socket3 correspo

The company's ERP system has a large amount of data, with 40 GB of data and 90 + concurrent users and 1000 + connections. The original IO performance cannot meet users' operation response requirements, and report query is slow, all the indexes have been done, and the index is re-built once a week, but the problem still cannot be solved. To this end, the company purchased the dell poweredge R720xd server, which supports two arrays and 24 hard disks, dual-CPU, 64 GB memory, more awesome. We have c

"""Some Special Pupropse layers for SSD."""ImportKeras.backend as K fromKeras.engine.topologyImportInputspec fromKeras.engine.topologyImportLayerImportNumPy as NPImportTensorFlow as TFclassNormalize (Layer):"""normalization layer as described in parsenet paper. # Arguments Scale:default feature scale. # Input shape 4D tensor with shape: ' (samples, channels, rows, cols) ' If dim_ordering= ' th ' or 4D tens or with shape: ' (samples, rows, cols,

How to adjust the boot sequence of SSD after installing solid state hard disk in computer 1, after the computer restart, point del into the motherboard interface, go to boot, you can see the start of the sequence of display; 2, the problem is not seen in the startup preferences of solid-state drives, and then enter hard disk Drive BBS priorities; 3, in the choice of the inside can see solid state hard drive and mechanical hard dri

To the introduction of solid-state drives, compared to the old mechanical hard drive, SSD solid state hard disk is said to be the same as the rocket speed, the installation of solid state hard drive after the Win7 system, whether the boot or operation has a quality upgrade, but many friends may not know, the use of solid-state drives there are some need to know the optimization methods, Allows your solid-state drives to perform optimally in Win7 syste

After replacing the SSD under Mac Pro, it is cumbersome to change the SSD to AHCI mode if Win7 is installed. This article describes how to change the SSD in Mac Win7 to AHCI mode driver and the processing of several common problems.How to change the SSD drive mode of Win7 to AHCI when Lion and Win7 dual system coexist1

4K corresponds to 4096HDD Mode:First, let the SSD run in AHCI mode:AHCI, the full name Advanced host controller Interface, which is the high-level hosting controllers interface, is more suitable for SSD SATA storage device communication protocols than the older "IDE" virtual mode. In AHCI and IDE mode, the SSD's performance gap percentage is around 65%. Therefore, it is recommended that