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There are four methods are available in Write-Back Flash Cache.
1. Write-through Read Path
2. Write-back Read Path
3. Write-through Write Path
4. Write-back Write Path
a. Flash cache provides the enhanced read and write performance.
b. This means writes first happen on Flash cache and the database gives acknowledgment.
c. Cell software then writes them back onto hard disk when it finds it necessary.
It will improve performance for Applications like most "Insert" operations. Before configuration we have to configure ASM disk, Flash Cache carefully to avoid performance bottle necks
Hope it helps..
LaserSoft said all that you need to know (lol). Perfect
I had implemented WriteBack in several customers at ACS, and I really don't see any kind of bottleneck till now. all implementation works fine (for X2-2 and X3-2). Last week I had implemented a X3-2 Quarter Rack with Writeback with no problem, all FlashCache operations work fine (Off course, X3-2 has more FlashCache memory than X2-2, but I really don't see any kind of bottlenecks)
Edited by: Victor Armbrust on 04/06/2013 10:13