SQL Server 2012 vs. DataKeeper
1
AlwaysOn Availability
Groups
AlwaysOn Failover
Cluster
AlwaysOn Failover Cluster
with DataKeeper
Support SQL Standard Edition
2
4
4
Distributed Transactions
0
4
4
Unlimited Databases
0
4
4
Automated Client Redirection
2
4
4
Protects System Databases
(Master, MSDB, etc)
0
4
4
Eases Database Administration
0
4
4
Support more than 2-nodes in
failover configuration
0
4
4
Replicates Data other than SQL
0
0
4
Replication Efficiency
2
0
4
Eliminates SAN as a single point of
failure
4
0
4
Supports Multisite Clusters
4
0
4
Weighing your options….
• Am I concerned about the cost of SQL Server Enterprise Edition?
• Do I use replication or log shipping?
If you answered YES to any of
• Do I want to minimize the impact that replication has on the
questions you should
performance ofthese
my application?
consider
• Do I need to supportseriously
Lync Server
or other applications that use
distributed transactions?
implementing DataKeeper
• Do I need to ensure
that
SQL Agent
Cluster
Edition
for jobs
yoursuch
highas database
backups, optimizations,
and others
continue to run
availabilityDTS
needs
in a Fusion-io
regardless of the node in service?
Environment
• Do I need to ensure that SQL login accounts are kept in sync
between cluster nodes?
• Do I want to minimize my administrative burden ?
2
Inserts Per Second (MAX)
DataKeeper is 85%
Faster Than
AlwaysOn
900,000
800,000
700,000
600,000
No Mirror
500,000
AlwaysOn Sync Mirror
400,000
DataKeeper Sync Mirror
300,000
200,000
100,000
0
Inserts Per Second
Log File (Write MB/sec)
450
DataKeeper is 85%
Faster Than
AlwaysOn
400
350
300
250
No Mirror
200
AlwaysOn Sync Mirror
DataKeeper Sync Mirror
150
100
50
0
Log File Throughput
Cost Comparison – 16 Core System
$250,000
SQL 2012 AlwaysOn
Availability Group
with Readable
Secondary
$219,968
$200,000
SQL 2012 Standard
Edition 2-Node
Cluster w/DataKeeper
$150,000
$100,000
$64,698
$50,000
$-
$35,888
SQL 2008 R2
Enterprise Edition 2Node Cluster
w/DataKeeper
Disk Write MB/sec
700
600
577% faster than
AlwaysOn with
Read-Only Target
500
No Mirror
400
AlwaysOn Sync
300
AlwaysOn Sync w/ReadOnly Target
200
DataKeeper Sync
100
0
Disk Write MB/sec