Dell PowerVault MD1120 - Manual (Page 34)

A REFERENCE GUIDE FOR OPTIMIZING DELL™ POWERVAULT™ MD1XXX FAMILY SAS SOLUTION VER A02
PAGE 34 6/16/2008
3U / 15 x 3.5” drive 2U / 24 x 2.5” drive
OLTP
Recommended Not Recommended Possible
Recommended:
• MD1120 – Recommended for OLTP or Database servers with typical capacities where
performance and power efficiency are high priority.
Possible:
• MD1000 – Potential option for OLTP or Database servers where capacity is priority.
File Servers
File servers can be used for file archival or more dynamic storage where files are changed, added
and deleted on a daily basis. These servers range from workgroup to the corporate level. Storage
capacity is a key attribute of these servers as users add more and more files. File servers are
generally not mission critical systems so lower levels of availability and redundancy are acceptable
as data is usually backed up and can be restored in a matter of hours.
Archival file server characteristics and recommendations:
Table 17: Archival File Server General I/O profile
I/O Profile
(Read/Write) I/O Profile
(Sequential/Random)
Bandwidth
I/O
Size Latency
Sensitivity Growth
Rate
Criticality
90/10 Sequential Moderate >64k High Varies Low
Table18: Archival File Server RAID Guidelines
Application
RAID Level
Concatenated 0
1 10 5 50 6 60
File -Archival
Recommended Not Recommended Possible
Recommended:
• RAID 10 – Recommended due to high availability, redundancy, and good performance.
• RAID 5 – Recommended for file servers that require maximum storage capacity and
moderate data protection and performance.
• RAID 6 – Recommended for file servers that require maximum storage capacity,
enhanced data protection, and moderate performance.