Am 27.08.2013 00:07, schrieb Jorge Bastos: >>> Hum, which disk's setup do you have on the HOST? >>> HW RAID ? RAID, 1? 5? >> >> http://h10010.www1.hp.com/wwpc/il/en/sm/WF06b/12169-304616-241493- >> 241493-241493-3971510-3957473.html?dnr=1 > > So you're storage is an iSCSI, right? > No latency?
no latency, the controllers are Athlon 2600+ 1600 Mhz, have plenty of write-back cache and not to forget that VMware is damned good at caching at the layer below the guests two LUN's * 1.6 TB RAID6 for public servers (8x300 GB SAS 15000 rpm) * 5.5 TB RAID5 for internal infrastructure (4x2 TB SAS 7000 rpm) at normal operations each LUN is one one of the two controllers due controller-firmware-updates or failover both are on the same which happens transparent and only vCenter whines about degraded redundancy, as long there is nothing degraded not to forget that *both* storage paths are used and so you have practically 2 Gbit and spreaded load 2 dedicated SAN switches, two DL380 (G7/G8) and any network connections are redundant and load-balancing - the setup exists in this form since 2010 while one host from 2008 was replace din the meantime well, in fact you have for sure virtualization overhead but on the other hand you have much more powerful hardware as you could pay for 30 physical servers and most of the time a lot of guests are idle not to forget fully redundancy and de-deuplication backups on local disks on one host which are freezing the guest-FS at the begin of a backup and make a snapshot of the guest - at the moment of freeze you may have some latency and lose a few network packets, but that's all _____________________________________________________ http://www.vmware.com/products/vsphere/features-data-protection current de-duplication 2.33 TB to 272 GB (fileserver-storage excluded and daily offsite-backup per rsync, the same for any other data additional to the DataRecovery inhouse) _____________________________________________________ we started with VMware in 2008 (one host, local storage), dbmail in production started 2009 and 2010 a second host, vcneter-Server and the storage and after 5 years i would never ever go back to physical machines *never* compare Virtualbox or VMware Workstation with a bare metal hypervisor - on my workstations and homeserver i run VMware Workstation and for normal operations it may be eual fast but if it comes ot load no way to compare, hence i had a Load of 136 on one of the guests last year while the others did run well and even the attacke done was very responsible in a ssh-sessiion, my phsyical machines are practically unuseable with a load above 10
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