LSI CacheCade users

S

simplesam

Limp Gawd
Joined
Jul 1, 2009
Messages
136
Is anyone using the LSI CacheCade software / firmware / hardware-key upgrade yet?

I'd like to know: Do the CacheCade features work as advertised or not? Do the CacheCade features appear to be hardware/firmware based, or OS/driver based? Do the benefits of CacheCade pass through to VMs?

If the CacheCade upgrade is hardware/firmware based, I'd expect that:
1. The ssd or ssds used by CacheCade would simply act as a read-only extension of the card's onboard cache, and that a single ssd could act as a CacheCade read-only cache for multiple virtual disks.
2. The benefits of CacheCade would not be driver dependent, and could still be seen using an older lsi driver.
3. The benefits of CacheCade (iops) would pass through to VM or iscsi clients.

If the CacheCade upgrade is just a software/OS driver level hack, I'd expect that:
1. A dedicated ssd might be required for each virtual disk.
2. The benefits of CacheCade would not be seen by virtual machines running directly on the host (but might still benefit iscsi connected clients)
 
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