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46 Using Dell PS Series Asynchronous Replication | TR1052
replicas; that is, 3.5 days’ worth of replicas, not 7 days. Therefore, in this scenario, you could increase the
maximum-keep value to 14.
You can increase (or decrease) the maximum-keep value at any time. Additionally, you may also consider
increasing the volume’s replica reserve to handle the increased number of replicas you want to keep.
6.1.4 Interactions with other programs that create replicas
If you are using Dell PS Series Host Integration Tools such as Auto-Snapshot Manager/Microsoft Edition
(ASM/ME) or Virtual Storage Manager for VMware (VSM/VMware), it is important to understand the
replication interactions with Group Manager.
Administrators of the PS Series group can create replicas manually, through schedules, or both. This is also
true for administrators using ASM/ME and VSM/VMware. Replicas created by any of these methods all use
the same space on the replication partner. Therefore, if you have a schedule that runs through ASM/ME or
VSM/VMware, and a schedule on the same volume running through Group Manager, those replicas will
compete for the volume’s replica reserve.
Similarly, administrators of both the PS Series group and ASM/ME or VSM/VMware can use replicas to
restore volumes and to replicate back to the original group. Therefore, avoid having multiple
administrators attempting to replicate the same volume using different methods.