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0
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2answers
31 views

Building a dedicated physical MySQL server [on hold]

I have a database that I use to mine a "primary" 20-column table with 18 million rows and growing by about 2 million a week, and that may accelerate. I am working to pre-process data by running PHP ...
0
votes
0answers
32 views

What's the optimum hardware configuration for a database?(SQL Server) [closed]

Database circumstances are different from place to place, but there are a few theoretical areas which should prove true for all circumstances. I think it would be great if it is summed up in one ...
0
votes
1answer
27 views

Looking for good, but quick references for underlying OS concepts related to SQLOS (Memory Access, Scheduling, etc…)? [closed]

Looking for good, but quick references for underlying OS concepts related to SQLOS (Memory Access, Scheduling, etc...)? I am researching SQLOS and how threads and scheduling are handled, but I would ...
0
votes
1answer
68 views

sql server disk I/o question [closed]

I have a question on disks. How much I/O can a normal disk and a SAN disk can handle? I have heard about SAN disks should be able to handle upto 200-300 mb/sec, how much does a normal disk can handle ...
1
vote
0answers
102 views

SQL Server 2012 Database Engine Configuration Storage type Raid [closed]

I just inherited a Server that I have to rebuild for SQL Server 2012, I was wondering what would be the best disk configuration for the database engine. This is what I have: 6 x 300GB 10k: 2 x 1TB ...
0
votes
0answers
49 views

Overcoming the HDD IOPS limits on a billion row table? Is getting SSD the only solution?

I have a table with this structure: CREATE TABLE `requests` ( `userid` int(11) NOT NULL, `messageid` int(11) NOT NULL, `queueid` int(11) NOT NULL AUTO_INCREMENT, `problem_id` int(3) NOT NULL, ...
6
votes
1answer
196 views

SQL Server 2008R2 minimum RAID/Disk config

I want to take advantage of the great price/performance offered by the new Intel E5-2620 (v2) machines being offered by some dedicated server webhosts. Unfortunately most of these E5-2620v2 dedicated ...
2
votes
1answer
118 views

SQL Server data files and RAID

I have a server with a RAID1 volume (OS + apps) and a RAID10 volume (database). The RAID10 volume has 6 physical disks. Should I split the SQL Server database into 6 datafiles (one for each physical ...
2
votes
1answer
543 views

TempDB on Solid State Drives on SQL Server Cluster

Can solid state drives be used for the TempDB on a SQL Server failover cluster if they are local drive on both machines? It is supported in 2012 but our cluster is a SQL 2005. The application that it ...
3
votes
1answer
101 views

Help with Cybernetics SAN Configuration

There are tons of articles out there recommending RAID/ LUN/ drive configurations for SQL Servers, but most leave me still questioning as they usually state "it depends" and for this reason I'd like ...
7
votes
3answers
2k views

How to optimization database for heavy I/O from updates (software and hardware)

The situation I have a postgresql 9.2 database which is quite heavily updated all the time. The system is hence I/O bound, and I'm currently considering making another upgrade, I just need some ...
4
votes
2answers
3k views

SQL Server not using all CPU cores/threads

After upgrading our SQL Server's hardware, we noticed in the Windows Task Manager that the SQL instance is only using half of the threads available to it: . The server has the following hardware ...
0
votes
0answers
43 views

Creating a dedicated HD parition at beginning of disk for data files, benefits and draw backs?

I am thinking of creating a dedicated partition on the harddisk for the mysql database data files in /var/lib/mysql , while considering those 2 points: a dedicated partition will avoid any file ...
3
votes
1answer
1k views

Large table and poor performance - what to do next?

We have a Windows 2008 R2 / SQL Server 2008 R2 (Standard) server that is used to host a single database. The database itself mainly consists of a single large table containing both live and historical ...
2
votes
1answer
86 views

Meaning of SQLIO output “counts per second”

I realise that my question isn't strictly 'database' but I know that a lot of DBA's will use the SQLIO tool to check I/O performance on their systems so I'm hoping that somebody here will be able to ...
7
votes
2answers
3k views

general memory requirements for sql server 2008 r2

I'm not experienced with DBA work, but I'm trying to make a case for requesting additional resources for our sql server and was hoping I could get some smart folks to provide a rough rough estimate of ...
7
votes
1answer
448 views

SQL Server not using available memory

SQL Server 2008 R2 Standard Edition (64-bit) on Windows 2008R2 Enterprise Server has over 300 GB of memory but total memory use in control panel never goes over 86 GB Have SQL configured to use ...
6
votes
1answer
245 views

Strange behaviour DBCC Shrinkfile

I am attempting to run a dbcc shrinkfile in chunks of 1GB against a database where 95% of the data has been archived and deleted. I'm leaft with a 235GB file where 9GB is data/indexes. I want to ...
5
votes
1answer
604 views

Optimum configuration for 4 SSD drives

I would like to move a SQL Server database from a shared configuration with the web-server to it's own dedicated box. My current budget will allow me to put 4 disks together in an array with a single ...
8
votes
2answers
1k views

More CPU cores vs faster disks

I'm part of a small company so as usual covering a number of different roles. The latest of which is procuring a dedicated SQL Server box for our .NET web app. We've been quoted on a dual Xeon E5-2620 ...
-3
votes
1answer
72 views

Are database servers less scalable than web servers? [closed]

Isn't it possible to scale database servers through virtualization, like forever? I like to keep most of the workload on database server because it optimizes queries and the architecture decreases the ...
1
vote
1answer
235 views

SQL Server 2012 Availability group disk configuration options

Background I am quite far into the process of setting up a 2 server SQL Server 2012 Always on availability cluster to provide redundancy with a readable secondary replica of all our databases. Since ...
12
votes
6answers
6k views

Optimal drive configuration for SQL Server 2008R2

I have a fairly busy database server running SQL Server 2008 R2 that has the following setup: SATA RAID 1 (2 Drives) - OS / Programs SAS RAID 10 (4 Drives) - Sql Database Files (data and logs) SAS ...
8
votes
1answer
287 views

Strategies for organising SQL Server with large amount of RAM

We now have a new server for our DB and amongst other things we have 128GB of RAM available (previously I had 16GB) . I know SQL Server is very good at managing it's resources, but I was wondering if ...
4
votes
2answers
566 views

What utilities can I use to simulate I/O load for a DB restore and DBCC check?

I'm trying to figure out the peak load I can sustain on new hardware I procured for validating backups and performing DBCC checks. I've been using Crystal Diskmark to get throughput stats which helped ...
4
votes
2answers
4k views

SAN block size for SQL Server on 4KB NTFS

A potential customer wants to evaluate our storage system. They run Windows 2008R2 x64 with 4KB NTFS on a virtual test machine they've sent us. They did not seem to know this at hand, so I think it's ...
0
votes
1answer
584 views

consequences of using “innodb_flush_method = O_DIRECT” without having a battery backed write cache? or on a KVM guest?

Mysql 5.5.29 Innodb- 128GB Ram - 32 cores - Raid 10 SSD. Our server which is a dedicated KVM guest on a 'baremetal' is hosting our heavy read-write DB server. Everything is file-per-table. ...
9
votes
1answer
523 views

Why don't SQL Server queries use more than 7MB/sec of disk I/O

I have an SSD that, using IOmeter test, shows performance over 200MB/s. However when I run any SQL query from local machine the windows resource monitor never shows disk IO above 7MB/sec. This holds ...
2
votes
1answer
946 views

SQL Server recommended MAXDOP settings for NUMA

I have an OLTP SQL Database running on SQL 2008 R2 Enterprise Edition that may be fairly busy (5000 batches/sec) in next couple of months after going live production. Looking into server configuration ...
-1
votes
1answer
175 views

Is 2.23 mbs/sec for 8k random writes slow? [closed]

I have recently ran some hard drive benchmarks on one of my servers follow Brent Ozar's blog. For the random writes test, i got 86.52 ios/sec and 2.23mbs/sec. I am not a hardware person, and my sys ...
2
votes
2answers
185 views

Required hardware to build a development environment in Sql Server

We have a bunch of applications that depends on about 10 different databases servers (all sql server) in our network. We are looking to build a development environment where we could have a mirror of ...
2
votes
1answer
1k views

What are the most compelling reasons to upgrade from SQL Server 2005 to SQL Server 2012?

We currently have 2 SQL Server 2005 Enterprise machines in a mirrored environment running on Dell R815 servers. These machines consist of: Four AMD Opteron 6176 Processors (12 cores at 2.3Ghz), for ...
2
votes
1answer
1k views

Optimizing MySQL for Read-Only?

We have 14 GB worth of CSV's which total 138 million rows. I imported this into a MySQL table first with InnoDB, and then tried again with MyISAM. In both cases, a simple SELECT on primary key ...
4
votes
3answers
975 views

Should we need to use Barriers on a production database (MySQL/InnoDB)?

Even though we are using a journaling filesystem (EXT3) with barrier enabled, is this still safer and recommended? e.g mount -o barrier=1 /dev/sda /mntpnt Reference: ...
1
vote
1answer
166 views

Hard Drive Configuration for my setup

I have a fairly large transactional database (100GB) with a lot of users. The database access is solely via stored procs that make heavy use of temp tables, table variables, cursors and other fun ...
0
votes
3answers
338 views

Custom SQL Server Computer Build

I hope this is the right place to ask this question. I'm a user at StackOverflow, and when I perused the StackExchange websites, this was the best match I could find. So, if I've posted in the wrong ...
2
votes
2answers
153 views

Is this Dedicated Server good enough to Run MySQL on Linux Ubuntu?

I have a web application that runs simple logic. Most of the SQL procedures that I have only do simple selects, some simple join table and some simple inserts. I want to get a dedicated server for My ...
7
votes
3answers
439 views

Is there a performance benefit to placing transaction log files on a separate drive?

There are many blog posts and best practice articles extolling the virtues of placing the SQL Server data file on one hard drive and the transaction log on another. The reason given is that that the ...