Thin client server capacity planning for sm es
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Transcript of Thin client server capacity planning for sm es
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Thin Client Server Capacity PlanningDos and Don’ts Practical Tips
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Processors
Using thin Clients? Confused about Server capacity?
Memory
Hard disk
Networking
Operating System
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Applicable to any Thin Client Server (Win/Lin) Applicable to any Technology RDP or vSpace
Not applicable for DB or email Servers.
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Can You spot the Planning problem
in this pic?
Wrongly planned server horrorsUsers think that Thin clients are slow or unstable,
Where as culprit is Server or IT Infrastructure
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THEBiggest Mistake
Lower Ram, Biggest Problem kills performance, overburdens CPU and also
kills your Hard-disks
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THEDeliberate Mistake
Desktop OS is for DesktopCannot efficiently manage multiple simultaneous
users. Never use Desktop OS for Server.
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Another Mistake
lower CPU power, lower performanceeverything hogged up, overall performance is
down.
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Most Ignored Mistake
Bad networking, erratic behaviourThin Clients (seem to) hanging.
Slow performance (on few Thin Clients).
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Most Common Mistake
Cheap Motherboard, big RiskWrong Motherboard cannot get best out of
Best CPU or Best RAM.
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SillyMistakes
Small mistakes, big disastersA bad Power supply, or chassis or air conditioning,
Earthing (ground) can create big disaster
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General Guidelines & Thumb rules
• 1 Core CPU for every 10 normal users. • 2 GB RAM for each core of CPU. • 150 kbps bandwidth per user session. • Always use Server Class Board & OS. • Power conditioning & UPS is must. • Buy fastest HDD, (SAS recommended) • Regularly monitoring (CPU, RAM, HDD). • Understand “Scale Up” and “Scale Out”
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Ram Calculation for Server
• 2 GB Ram for Base OS of the Server. • Add 200 MB for each User Session. • Add 40% Buffer for Occasional loads. • Eg : for 50 users
• 2000 MB for base OS • 10000 MB for User Sessions (200 x 50) • 4800 MB Buffer • Total RAM required: 16,800 MB ram.
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Ram Calculation Per User Session
• Benchmark is 200 MB for each User Session.
• Give a normal Desktop PC to few users, monitor operation for entire day(s).
• Check maximum ram used during the period. • This is your RAM required per User Session, for that
type of users.
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CPU power Calculation
• Benchmark is 2Gb ram for each Core • Benchmark is 1 Core for each 10 users.
Which ever is more.
• 16 GB Ram (as in example), which is 8 Core. • 50 Users (as in example), which is 5 Core.
8 Core CPU required
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HDD: SAS is always better than SATA
• Disk Reading/Writing is most important task in Thin Client server’s Role.
• 15000 rpm of SAS v/s 7200 rpm of SATA • SAS is more stable and reliable than SATA • SAS has longer life @ higher temperatures,
more suitable for server. • Much higher data transfer rates.
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Other Best Practices
• Always use Server class Chassis and power supply.
• Always use Server Operating System.• Use Disk Mirroring. • Always keep a backup server (low configuration
is Ok) • Properly secure your Server OS (user rights and
permissions)
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Enjay Thin ClientsThe best Thin Clients in India
www.enjayworld.com