21
R
R
R
e
e
e
p
p
p
l
l
l
a
a
a
c
c
c
i
i
i
n
n
n
g
g
g
/
/
/
U
U
U
p
p
p
g
g
g
r
r
r
a
a
a
d
d
d
i
i
i
n
n
n
g
g
g
D
D
D
D
D
D
R
R
R
S
S
S
D
D
D
R
R
R
A
A
A
M
M
M
Read the pre-installation notices earlier in this chapter before proceeding with
installation.
RAID SYSTEM is normally supplied with 256MB DDR SDRAM installed.
There's no set formula to determine how much cache memory to use, but as a
general rule, a workstation, with mostly very large files, such as for audio or
video editing and playback, graphics or CAD files, can benefit from a large
cache. File servers, with multiple random access of varying file size, generally
have little or no performance improvement with additional cache.
Memory serves as the data buffer to increase the CPU utilization rate and minimize the overhead of data
accessing , thus, improves the overall performance. YI-08SA/12SA/16SA supports up to 2GB DDR
SDRAM at 333Mhz with or without ECC & register type memories .
The DDR memory socket is used 184-pin DIMM socket . Use 90 degree of memory slot type
DDR SDRAM DIMM specifications:
Minimum
Recommended
DDR333
184-pin DDR SDRAM DIMM module
(DDR-333).
DDR SDRAM DIMM, with or without
ECC &Register type
With ECC, for security
Minimum of one DDR DIMM with 256
MB. The memory card socket can
support , 256M, 512 MB ,1GB or 2GBof
memory.
Minimum of 256 MB. More memory
(up to 2GB) equals better
performance: the size of the memory
module defines the cache writing
space available to the RAID
SYSTEM.
