SK
нексусы
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2019 December 08
SK
у них же мелкие задержки то что они не хранят пакет у себя
RK
ЦИска 3000 серию дисконтирует нормально, но леново подрезает
MS
у них же мелкие задержки то что они не хранят пакет у себя
Можно мелкие задержки и с нормальными буферами вообще-то
MS
6MB buffers were being shared across 3 groups (fixed ports)
Buffer issues were generally seen when about ~10GB volume of bursty traffic was being sent across the interfaces. In this case, the entire 6MB buffer was being used by a single interface seeing bursty traffic
In this case, the upstream switch was a Cisco 9k and the issues with the buffers were localised to the N3K
Buffer issues were generally seen when about ~10GB volume of bursty traffic was being sent across the interfaces. In this case, the entire 6MB buffer was being used by a single interface seeing bursty traffic
In this case, the upstream switch was a Cisco 9k and the issues with the buffers were localised to the N3K
MS
На этих говно-коммутаторах - все 6 мегабайт может занять ОДИН порт 🙂
MS
А вот какие эффекты
During either replication or scans or periods of high bursty traffic the following is generally seen on the environment:
iSCSI session disconnects for client machines that are configured to use iSCSI
Slower replication times
Slower RDP sessions
Overall spike in latencies
Unexplained ping packet losses on ping_hosts and ping_gateways
Possible cluster wide issues depending on the extent of network issues seen
During either replication or scans or periods of high bursty traffic the following is generally seen on the environment:
iSCSI session disconnects for client machines that are configured to use iSCSI
Slower replication times
Slower RDP sessions
Overall spike in latencies
Unexplained ping packet losses on ping_hosts and ping_gateways
Possible cluster wide issues depending on the extent of network issues seen
MS
Короче Nexus 3K избегать как черт ладана 🙂
MS
Дичайшее говнище
MS
И эти парни рассказывают про преимущества HyperFlex :))))
MS
“the only work around would be to have the customer upgrade the switches to either the 6x or 9x series depending on the workload and traffic the cluster is seeing”
UD
А в чем магия любви к обрезкам от cisco ?
MS
А в чем магия любви к обрезкам от cisco ?
Ну cisco активно пихает.
UD
Типа фексов, n3k и подобных
MS
Причем рассказывает бодро что 3k идеален для HCI потому что low latency
RK
Типа фексов, n3k и подобных
Цена
MS
Реальность - с точностью до наоборот.
MS
У cisco нет нормальных свитчей.
MS
Low latency свитчи - гуано
M
6 MB shared among 16 ports; 18 MB total
На 7150S всего 9.5 МБ, это ведь тоже не очень хорошо для HCI?