From: Brian Warner <warner@allmydata.com>
Date: Mon, 10 Sep 2007 22:46:45 +0000 (-0700)
Subject: provisioning: include the cost of replacing failed hard drives
X-Git-Url: https://git.rkrishnan.org/specifications/vdrive/index.php?a=commitdiff_plain;h=89a25f198791b7edbd9d6f852e92035e02428fc5;p=tahoe-lafs%2Ftahoe-lafs.git
provisioning: include the cost of replacing failed hard drives
---
diff --git a/src/allmydata/provisioning.py b/src/allmydata/provisioning.py
index d0ae5d1f..93164e87 100644
--- a/src/allmydata/provisioning.py
+++ b/src/allmydata/provisioning.py
@@ -604,16 +604,10 @@ class ProvisioningTool(rend.Page):
server_bandwidth_mbps = mathutil.div_ceil(int(server_bandwidth*8),
int(1e6))
server_monthly_cost = 70*server_bandwidth_mbps + 44
- total_server_monthly_cost = float(num_servers * server_monthly_cost)
add_output("Servers", T.div["Monthly cost per server: $",
server_monthly_cost])
- add_output("Grid", T.div["Monthly cost for all servers: $",
- number(total_server_monthly_cost)])
add_output("Users", T.div["Capital cost per user: $",
number(total_server_cost / num_users)])
- add_output("Users",
- T.div["Monthly cost per user: $",
- number(total_server_monthly_cost / num_users)])
# reliability
any_drive_failure_rate = total_drives * drive_failure_rate
@@ -622,6 +616,21 @@ class ProvisioningTool(rend.Page):
add_output("Drives",
T.div["MTBF (any drive): ",
number(any_drive_MTBF_days), " days"])
+ drive_replacement_monthly_cost = (float(drive_cost)
+ * any_drive_failure_rate
+ *30*86400)
+ add_output("Grid",
+ T.div["Monthly cost of replacing drives: $",
+ number(drive_replacement_monthly_cost)])
+
+ total_server_monthly_cost = float(num_servers * server_monthly_cost
+ + drive_replacement_monthly_cost)
+
+ add_output("Grid", T.div["Monthly cost for all servers: $",
+ number(total_server_monthly_cost)])
+ add_output("Users",
+ T.div["Monthly cost per user: $",
+ number(total_server_monthly_cost / num_users)])
# availability
file_dBA = self.file_availability(k, n, server_dBA)