Dell PowerVault 221S (SCSI) User Manual
Page 36
A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS
VER A02
PAGE 36
11/17/2005
Table
5-2 – Controller Families & Features: Part 1
PERC 4e/Di PERC 4e/DC
PERC 4/Di
(PE2600)
PERC 4/Di
(PE1750)
SCSI
Technology
Wide
Ultra320
Wide
Ultra320
Wide
Ultra320
Wide
Ultra320
Host Bus
Interface
x4 PCI
Express
(Embedded)
X8 PCI
Express
(HBA)
PCI 2.2
(Embedded)
32-bit / 33
MHz PCI
(Embedded)
# Channels
2 2 2 2
# internal
connectors
2 x 68-pin
HD
2 x 68-pin
HD
2 x 68-pin
HD
n/a
(hardwired to
backplane)
# External
Connectors
1 x 68-pin
UHD
2 x 68-pin
UHD
1 x 68-pin
HD
1 x 68-pin
UHD
RAID Levels
Supported
0, 1, 5, 10, 50
0, 1, 5, 10, 50
0, 1, 5, 10, 50
0, 1, 5, 10, 50
Cluster
Support?
no yes no no
Cache Size
(DIMM)
256MB
DDR2
128MB DDR
128MB
DIMM
128MB
DDR2
Write Cache
Options
off, write-
through,
write-back
off, write-
through,
write-back
off, write-
through,
write-back
off, write-
through,
write-back
Read Cache
Options
read-ahead
(default),
off
(selectable)
read-ahead
(default),
off
(selectable)
read-ahead
(default),
off
(selectable)
read-ahead
(default),
off
(selectable)
BBU Battery Life 48-72 hours
48-72 hours
48-72 hours
48-72 hours
Max # Logical
Drives/Controller
40 40 40 40
Max # Physical
Drives/Logical
Drive
32 32 32 32
Vendor
LSI LSI LSI LSI
SCSI Chip
LSI 53C1030
LSI 53C1030
LSI 53C1030
LSI 53C1030
RAID Processor
Intel GC80332 Intel GC80332 Intel GC80303 Intel i80321