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IBM SAS 2.5-inch MLC Enterprise SSDs 4
Technical specifications
Table 2 presents technical specifications for the IBM SAS MLC Enterprise solid-state drives.
Table 2. IBM SAS MLC Enterprise SSD technical specifications
Specification 200 GB 400 GB 800 GB
Part number 49Y6129 49Y6144 49Y6134 49Y6149 49Y6139 49Y6154
Interface 6 Gbps SAS 6 Gbps SAS 6 Gbps SAS 6 Gbps SAS 6 Gbps SAS 6 Gbps SAS
Hot-swap
drive
Yes No Yes No Yes No
Form factor 2.5-inch 2.5-inch 2.5-inch 2.5-inch 2.5-inch 2.5-inch
Capacity 200 GB 200 GB 400 GB 400 GB 800 GB 800 GB
Endurance 5-year life time
(3.65 PB TBW)
5-year life time
(3.65 PB TBW)
5-year life time
(7.3 PB TBW)
5-year life time
(7.3 PB TBW)
5-year life time
(14.6 PB TBW)
5-year life time
(14.6 PB TBW)
Data reliability
< 1 in 10
17
bits
read
< 1 in 10
17
bits
read
< 1 in 10
17
bits
read
< 1 in 10
17
bits
read
< 1 in 10
17
bits
read
< 1 in 10
17
bits
read
MTBF, hours > 2,500,000 > 2,500,000 > 2,500,000 > 2,500,000 > 2,500,000 > 2,500,000
IOPS read* 100,000 100,000 100,000 100,000 100,000 100,000
IOPS write* 50,000 50,000 50,000 50,000 50,000 50,000
Sequential
read rate†
500 MBps 500 MBps 500 MBps 500 MBps 500 MBps 500 MBps
Sequential
write rate†
500 MBps 500 MBps 500 MBps 500 MBps 500 MBps 500 MBps
Access time < 0.1 ms < 0.1 ms < 0.1 ms < 0.1 ms < 0.1 ms < 0.1 ms
Shock 1000
g,
0.5 ms 1000
g,
0.5 ms 1000
g,
0.5 ms 1000
g,
0.5 ms 1000
g,
0.5 ms 1000
g,
0.5 ms
Vibration,
operating
1.0
g
rms
5-300 Hz
0.5
g
rms
300-400 Hz
1.0
g
rms
5-300 Hz
0.5
g
rms
300-400 Hz
1.0
g
rms
5-300 Hz
0.5
g
rms
300-400 Hz
1.0
g
rms
5-300 Hz
0.5
g
rms
300-400 Hz
1.0
g
rms
5-300 Hz
0.5
g
rms
300-400 Hz
1.0
g
rms
5-300 Hz
0.5
g
rms
300-400 Hz
Vibration,
non-operating
3.0
g
rms
5-200 Hz
3.0
g
rms
5-200 Hz
3.0
g
rms
5-200 Hz
3.0
g
rms
5-200 Hz
3.0
g
rms
5-200 Hz
3.0
g
rms
5-200 Hz
Typical power 7 W 7 W 7 W 7 W 7 W 7 W
* 4 KB block transfers
† 128 KB block transfers
The TBW value that is assigned to a solid-state device is the total bytes of written data that a drive can be
guaranteed to complete. Reaching this limit does not cause the drive to immediately fail; the TBW simply
denotes the maximum number of writes that can be guaranteed. A solid-state device will not fail upon
reaching the specified TBW, but at some point after surpassing the TBW value (and based on
manufacturing variance margins), the drive will reach the end-of-life point, at which time the drive will go
into read-only mode. Because of such behavior, careful planning must be done to use SSDs in the
application environments to ensure that the TBW of the drive will not be exceeded prior to the required life
expectancy.
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