cache on storage controllers - why you need more
Post on 16-Feb-2017
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Answers to Your IT Nightmares
Cache on Storage ControllersWhy You Need More
Lowdown on Cacheo Buffer for Data Being Read or Written
Data Goes to Cache First Then to Disks
o It’s Memory Out Performs Hard Drives Heavily
o Memory is Volatile Cache is Backed by a Battery
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Why More?o More Data Can Be Buffered
Before Read or Writeo Small Data Transactions
Fastero High Capacity Transactions
Significant Burst in Beginning
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Effects on Performanceo If Controller / RAID Battery Fails...o Significant Speed Decrease
Due to Write Cache Not Workingo Many Tech Support Calls About This
Highly Decreased Server Performance Troubleshooting Reveals Cache was Disabled
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Cache Importanceo Performance RAID Controllers
Have Cache by Defaulto Price to Upgrade to Full Potential
Worth It in the Long Runo RAID on New Servers Capable of 2-
4GB Standard Used to be 512MB-1GB
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Take a Looko http://www.aventissystems.com/Articles.asp?ID=
411
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