Drive Enclosure Expansion Limits
NOTE: Drives in the node enclosure are connected internally through DP-1.
Expansion LimitsEnclosure
2-node—9 drive enclosures total8200
• Node DP1 = 4 drive enclosures connected
• Node DP2 = 5 drive enclosures connected
2-node—11 drive enclosures total8400
• Node DP1 = 5 drive enclosures connected
• Node DP2 = 6 drive enclosures connected
4-node—22 drive enclosures total
• Node DP1 = 10 drive enclosures connected
• Node DP2 = 12 drive enclosures connected
2-node—19 drive enclosures total8440
• Node DP1 = 9 drive enclosures connected
• Node DP2 = 10 drive enclosures connected
4-node—38 drive enclosures total
• Node DP1 = 18 drive enclosures connected
• Node DP2 = 20 drive enclosures connected
2-node—9 drive enclosures total8450
• Node DP1 = 4 drive enclosures connected
• Node DP2 = 5 drive enclosures connected
2-node—18 drive enclosures total
• Node DP1 = 8 drive enclosures connected
• Node DP2 = 10 drive enclosures connected
Information About Drive Upgrades
You can install additional drives to upgrade partially populated drive enclosures.
WARNING! If the 3PAR StoreServ Storage is enabled with the Data-at-Rest (DAR) encryption
feature, only use the self-encrypting drives (SED). Using a non-self-encrypting drive might cause
errors during the upgrade process.
NOTE: SSDs have a limited number of writes that can occur before reaching the SSD's write
endurance limit. This limit is generally high enough so wear out will not occur during the expected
service life of a 3PAR StoreServ Storage under the great majority of configurations, I/O patterns,
and workloads. 3PAR StoreServ Storage tracks all writes to SSDs and can report the percent of
the total write endurance limit that has been used. This allows any SSD approaching the write
endurance limit to be proactively replaced before they are automatically spared out. An SSD has
reached the maximum usage limit once it exceeds its write endurance limit. Following the product
warranty period, SSDs that have exceeded the maximum usage limit will not be repaired or
replaced under Hewlett Packard Enterprise Support contracts.
Drive Enclosure Expansion Limits 123
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