Browse by Tags

SQL Server data and log files initialization, think multiple files, backup & restore performance!

Published 25 July 8 6:1 AM | SSQA.net

Whenever you perform a database creation, add a data or log file to database, AUTOGROW process is intiated or restore of database will trigger the file initialization if that is created afresh. In addition to this when you talk about files intialization...

Filed under: sql server, performance, restore, best practices, multiple, filegroup, backups, disks, throughput, files, tapes

Is RAID5 better for performance when SQL Server Clustering and SAN is involved?

Published 23 January 8 12:28 AM | SSQA.net

One of the recent usergroup meeting brought an interesting question that "what type of hardware I need for a RAID-5 Shared Array for SQL Server Cluster"? By default RAID5 hardware controller is best to hold as not to go with software RAID5 as...

Filed under: sql server, performance, san, best practice, hardware, disks, monitoring, benchmarking, scsi

Disk Space Requirements for Index DDL Operations

Published 28 September 7 8:38 AM | SSQA.net

Are you watching your disk space during the indexes operations where these database objects are stored? Recently I was stumped on a database that is only 5GB had reindexing process failure due to 10% of disk free space was available. For your information...

Filed under: sql server, performance, indexes, dba, optimization, disk space, best practice, hardware, disks, sorting, reindexing

ASYNC_NETWORK_IO: query is slow

Published 29 August 7 5:0 AM | SSQA.net

When you run normal SELECT statement from the Activity Monitor, the session has a status of "suspended", a command of "SELECT" and a wait type of "ASYNC_NETWORK_IO". What do you expect to the see the results and within the...

Filed under: sql server, performance, tuning, i/o, object, disks, type, wait

sys.dm_os_schedulers - useful to find on whether your SQL Server engine is weakening!

Published 17 August 7 8:4 AM | SSQA.net

The system DMV sys.dm_os_schedulers is an useful DMV to find such as running tasks & active workers threads etc. This is required to monitor the system state is heavily loaded or not, in particular this view will help you identify if there is any...

Filed under: sql server, performance, memory, analysis, ssms, dmv, cpu, disks

Smaller disks <> more spindles which one is better for performance?

Published 10 August 7 4:53 AM | SSQA.net

I have gone through a question within the forums asking "smaller disks or more spindles" which is better for performance. The simple answer is more disks to handle the data growth and also mostly depends upon the number of transactons that are...

Filed under: sql server, performance, security, hardware, disks, spindle