Q-See QSTD2408 - Manual (Page 69)

QSTD2400 Series DVR User’s Manual
65
For 16-channel DVR:
Total Recoding capacity =112.5(mb/h) X 24(hours/day) X30(days)
X16(channels)
= 1296000(MB)
= 1296(GB)
In this case you should install four 320 GB SATA HDDs, and you can record about one
month.
Appendix D Compatible Devices
1. Compatible USB flash drives based on our testing:
Brand Capacity
SSK 512MB, 1G, 2GB
Netac 4GB
Kingston 2GB
Aigo 2GB
Smatter vider 1GB
Scandisk 4GB
Tab C.1 Compatible USB drive
2. Compatible SATA CD/DVD burners based on our testing:
Brand Model
SAMSUNG TS-H653B
LITE-ON DH-20A6S01C
Tab C.2 Compatible CD/DVD writers
Notice: This does not mean these are the only ones that will work, these
are the ones that we have used in our testing so we recommend them.