Hikvision NVR series question for RAID?

[avoida]

I will install about 24 cameras Hikvision /2Mpx and 4Mpx/. One of the conditions is NVR support RAID 1
/Mirrored HDD/.
I want to ask whether the series Hikvision NVR DS-7632 or DS-7732 supporting RAID1?
I read the there manuals but there is no mention of RAID anywhere.

[KonBez]

What about using e-sata for NAS which support RAID techology? DS-7732 use e-sata external drive.
As I know this NVR may use second HDD as duplicate HDD.
http://hikvision.ru/c/manual/e5c70aba6e ... manual.pdf" onclick="window.open(this.href);return false;
Read please page #5
RAID techology for NVR DS-9600NI... series.

PS. 444-пост.