l*r
6 楼
get it from google:
Teradata data warehouse platforms and can scale to 50 petabytes of usable
data across 1,024 nodes. It is available for a starting U.S. list price of
$16,500 per terabyte.
The Teradata Data Warehouse Appliance 2550 can spin up to 512 terabytes of
disk for a price of $99000 per terabyte of data
【在 B*****g 的大作中提到】![](/moin_static193/solenoid/img/up.png)
: 不是4万吗?
Teradata data warehouse platforms and can scale to 50 petabytes of usable
data across 1,024 nodes. It is available for a starting U.S. list price of
$16,500 per terabyte.
The Teradata Data Warehouse Appliance 2550 can spin up to 512 terabytes of
disk for a price of $99000 per terabyte of data
【在 B*****g 的大作中提到】
![](/moin_static193/solenoid/img/up.png)
: 不是4万吗?
w*r
8 楼
Teradata: MPP system hardware
software: parallel engine transparent on both end.
data is distributed by hash_amp(primary index)
AMP -- > virtual processor
AMP only konws what it has, it does not know what resides on someone else's
Query plan usually goes like ->>
retrieve data --> rehash based on join key --> join locally on amp
software: parallel engine transparent on both end.
data is distributed by hash_amp(primary index)
AMP -- > virtual processor
AMP only konws what it has, it does not know what resides on someone else's
Query plan usually goes like ->>
retrieve data --> rehash based on join key --> join locally on amp
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