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VNX Support Forum

yeah, let's discuss.

Types of disk drives

Flash drives is for extreme performance needs, for transactional random workloads, such as OLTP

SAS drives is for the general performcance tier for general random or sequential workloads

NL_SAS is for well-behaved streaming, aging data and archive purpose, data warehouse and backup needs

Protection mechanisms (I guess you mean RAID)

RAID 10 is for heavy transactional workloads with high random write component, data will be written to disks in one group rapidly

RAID 5 is for medium to high performance, sequential IO

RAID 6 is for NL-SAS read-based workloads and archiving, and provides additional protection to cover longer rebuild times of large drives

Storage tiers

The number of tiers required in a storage pool is influenced by performance, capacity. The capacity for each tier depends on how much data you expect to store locally. A good startpoint is to have 5% flash, 20% sas and 75% nlsas within a tier. When you know the exact capacity in the storage and the performance needs we could discuss this point more specifically.

What do you think should be discussed under:

front end connectivity

host connectivity