The general form of Proc tabulate: (the subject is different from the freq process. Here is the table statement, not tables)
1 proc tabulate format = options;/* format = option to change the format of all cells in the table */2 var analysis-variable-
Contents process (view dataset attributes)
1 ProcContents data=Data-Set;2Run;
Label
1 /* there are two types of labels, but cannot exceed 256 characters */ 2 label = data - set (define a label for the dataset)
NraidNraid is non-raid. The capacity of all disks is combined into a logical disk without data block entries (no block stripping ). Nraid does not provide data redundancy. At least one disk is required.JbodJbod stands for just a bunch of drives. The
Proc Printto log= "./xx1.txt" new;
Data temp;
Input a b C;
Cards
A 1 8
A 2 7
A 3 8
A 4 9
;
Run
Proc Printto log= "./xx2.txt" new;
Data temp1;
Set temp;
f= lag (c);
D= dif (c);
Run
The lag (Var) function is to move the variable in
/* Way One */
%let x=5; %let y=test; %put &x &y;
/* Mode two */
Data _null_; Call Symput (' x ', 5);
Call Symput (' y ', ' test ');
Run %put &x &y;
/* Mode three */* if there are multiple records, only the value of the first bar */
Proc SQL Noprint;
1: Macro definition in program runCall Routines -enable you-transfer information between an executing DATA step and the Macro Proces Sor.You can use the symput routine to create a macro variable, and to assign to, variable any value, is Availa ble
First, objectives
Display all rows, eliminate duplicate rows, and limit the number of rows displayed
subset rows using other conditional operators and caculated values
Enhance the formatting of query output
Using summary
-Configure one b6131 FDR 56 gb ib switch module,(14 internal ports and 18 external ports)
Each blade ChassisSupport 7 x440,Or 14 x240 servers,Different models are supported.Insert Blade
Log on to/manage nodes,Report Server
IBM x3650 M4 server, rack Server-2 E5-2640 CPUs (2.5 GHz/6-core) Total 12 cores-32 GB ddr3 memory-Two 300 GB 10 k SAS hot swapping hard drives-Four standard Gigabit Ethernet ports, DVD drive, and redundant power s
SAS9.3 64bit version Installation GuideWith a new computer, after installing the original SAS9.2 , the enhanced editor has been unable to load, tried various methods and wasted the day. Helpless download SAS9.3 version, but the installation is not smooth, of course , the main problem is the JDK , referring to the Netizen's article, successfully completed the installation, another note operating system for Win7 version. Original address:http://f.dataguru.cn/thread-161588-1-1.html1, the main proc
of the hard drive transmission speed are:Ultra-ata33Ultra-ata66ultra-ata100 [ultra-ata133SATA hard Drive transfer speeds are:ultra-ata150the difference between a SCSI interface and a SAS interfaceSAS (serial Attached SCSI), serial attached SCSI, is the next generation of SCSI technology, and is the same as the current serial ATA (SATA) hard drive, using serial technology to achieve higher transmission speed and improve internal space by shortening th
In the past few days, the write policy of the RAID card is switched back to WT from WB. If "Learn cycle" occurs during business peaks, it will seriously affect the performance of the database. After the problem is solved, sort out your understanding of these problems. I will not describe the megacli command set I have used. There are a lot of information about it on the Internet. We recommend related articles by Tan and ye from Chinese documents.
I will explain the problems related to the RAID c
. Its main goal is to capture changes to datasets in the source (like Oracle) and update these changes to the additional database system. However, it was not long before this architecture was able to meet the data requirements of the website. Because according to Brewerd's CAP theory, it seems impossible to satisfy the following conditions simultaneously: consistency: All Applications see the same data availability at the same time: ensure that each request can receive a response, fault Toleranc
Information systems can store information on storage devices in the form of data. They are stored online, nearline, and offline.
Online storage stores data on disk storage devices directly managed by the host's file system. It features that it uses the underlying I/O technology of the system, the advantage is that data can be accessed and changed in real time, and the performance is excellent, meeting the application's requirements for I/O perform
SSD, SAS, SATA
Real-time SSD is best; SAS io is faster; SATA is the cheapest and should be used as a storage server (low frequency of access)
The following major sectors are excerpted from the network:
MLC SSD and SLC SSD
SSD (Solid state disk or Solid state Drive), also known as an electronic hard disk or solid-state electronic disk, is a hard disk consisting of a control unit and a solid-state storage
Gina, as Microsoft officially stated:
The Gina operates in the context of the Winlogon process and, as such, the Gina DLL is loaded very early in the boot process. the Gina dll must follow rules so that the integrity of the system is maintained, particle ly with respect to interactionThe user.
Note Gina DLLs are ignored in Windows Vista.
The most common use of the Gina is to communicate with an external device such as a smart-card reader. it is essential to set the start parameter for the device
Compare | Data IBM, Oracle, Sybase, CA, NCR, Informix, Microsoft, SAS and other powerful companies have launched their own data warehousing solutions (through acquisitions or research and development). Professional software companies such as Bo and Brio also have a place in the front-end online analytical processing tools market. The following is an analysis and comparison of the performance and characteristics of these data warehousing solutions.
IBM
the sas raid Controller sub-card battery and Troubleshooting System cooling failures.
E12nn
XX pwrgd
The specified voltage regulator fails.
E1229
CPU # vcore
The processor # vcore voltage regulator is faulty.
E1310
Rpm fan ##
The RPM of the specified cooling fan exceeds the permitted operating range.
See Troubleshooting System cooling faults.
E1313
Fan Redundancy
The fan in the
infrastructure cocould be based on several type of servers:
Storage nodes full of SSDS Disks
Storage nodes full of SAS Disks
Storage nodes full of SATA Disks
Such handy mecanism is possible with the help of the crush map.II. A bit about Crush
Crush stands for controlled replication under scalable hashing:
Pseudo-Random placement algorithm
Fast Calculation, no lookup repeatable, deterministic
Ensures even distribution
Stable Mappi
I. Category of disks
Disks can be divided into ATA (IDE), SATA, SCSI, SAS, and FC disks by interface type. According to the disk chip composition, it is divided into SSD and HDD. Because the mechanical hard disk is still the mainstream configuration, we call SAS, FC and SATA both refer to the mechanical hard disk.
The following is a brief introduction to Baidu Encyclopedia:
ATA,The full name is AdvancedTech
Compare | data
Comparison of the characteristics of nine large data warehouse schemes
China Institute of Electronic Equipment Systems Engineering Wang Jiannu Lidompo
Powerful companies such as IBM, Oracle, Sybase, CA, NCR, Informix, Microsoft, and SAS have launched their own data warehousing solutions (through acquisitions or research and development). Professional software companies such as Bo and Brio also have a place in the front-end online ana
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