On 9/18/2009 1:51 PM, Steffen Weiberle wrote:
# of systems
6 not including dozens of zfs root.
amount of storage
(a) 2 of them have 96TB raw,
46 WD SATA 2TB disks in two raidz2 pools + 2 hot spares
each raidz2 pool is on it's own shelf on it's own PCIx controller
(b) 2 of them have 268GB raw
26 HP 300GB SCA disks with mirroring + 2 hot spares
+ soon to be 3 way mirrored
each shelf of 14 disks is connected to it's own u320 pcix card
(c) 2 of them have 14TB raw
14 Dell SATA 1TB disks in two raidz2 pools + 1 hot spare
application profile(s)
(a) and (c) are file servers via nfs
(b) are postgres database servers
type of workload (low, high; random, sequential; read-only, read-write,
write-only)
(a) are 70/30 read/write @ average of 40MB/s
30 clients
(b) are 50/50 read/write @ average of 180MB/s
local read/write only
(c) are 70/30 read/write @ average of 28MB/s
10 clients
storage type(s)
(a) and (c) are sata
(b) are u320 scsi
industry
call analytics
whether it is private or I can share in a summary
not private.
anything else that might be of interest
35. “Because” makes any explanation rational. In a line to Kinko’s copy
machine a researcher asked to jump the line by presenting a reason “Can I
jump the line, because I am in a rush?” 94% of people complied. Good
reason, right? Okay, let’s change the reason. “Can I jump the line because
I need to make copies?” Excuse me? That’s why everybody is in the line to
begin with. Yet 93% of people complied. A request without “because” in it
(”Can I jump the line, please?”) generated 24% compliance.
--
Jeremy Kister
http://jeremy.kister.net./
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