Viking Technology Technology Computer Drive slim sata ユーザーズマニュアル
Manual
6/12/2014
PSFEM1XXXGPXXX
Viking Technology
Revision B4
Page 14 of 48
www.vikingtechnology.com
Table 2-1: Maximum Sustained Read and Write: MB/sec and IOPS
Access Type
VRFEM1xxxGP
Units
Sequential Read, 128K block size
Up to 500
MB/s
Sequential Write, 128K block size
Up to 500
MB/s
Random Read, 4K block size
Up to 60,000
IOPS
Random Write, 4K block size
Up to 20,000
IOPS
Notes:
1. Performance measured using IOmeter 08 with queue depth set to 32.
2. Write Cache enabled.
3. Random IOPS cover the entire range of legal logical block addresses (LBA’s). Measurements are
1. Performance measured using IOmeter 08 with queue depth set to 32.
2. Write Cache enabled.
3. Random IOPS cover the entire range of legal logical block addresses (LBA’s). Measurements are
performed on a full drive (all LBA’s have valid content).
4. Performance may vary by NAND type and host.
5. Refer to Application Note AN0006 for Viking SSD Benchmarking Methodology.
5. Refer to Application Note AN0006 for Viking SSD Benchmarking Methodology.
2.2 Timing
Table 2-2: Timing Specifications
Type
Average Latency or Timing
Power-On-to-Ready (POR)
115 ms
Reset to Ready
115 ms
Sleep to Ready
<1000 μs
Command to DRQ
<1000 μs
Time to Erase (ATA Secure Erase)
4 seconds
Time to Erase (ATA Secure Erase with flash erase)
~ 1 GB/second
Notes:
1. Based on MLC
2. Device measured using Drivemaster.
3. Sector Read/Write latency measured up to 2048 block transfers (512B/sector = 1 Block)
4. Queue depth set to 32 for NCQ
5. Sequential IOPS cover the entire range of legal logical block addresses (LBA’s). Measurements are
1. Based on MLC
2. Device measured using Drivemaster.
3. Sector Read/Write latency measured up to 2048 block transfers (512B/sector = 1 Block)
4. Queue depth set to 32 for NCQ
5. Sequential IOPS cover the entire range of legal logical block addresses (LBA’s). Measurements are
performed on a full drive (all LBA’s have valid content
2.2.1 STANDBY IMMEDIATE Command
The Power On to Ready time assumes a proper shutdown (power removal
preceded by STANDBY IMMEDIATE command. A STANDBY IMMEDIATE
before power down always performs a graceful shutdown and does not require
the use of the hold-up circuit. Note that SMART attribute 174 "Unexpected Power
Loss" records the number of non-graceful power cycle events.
preceded by STANDBY IMMEDIATE command. A STANDBY IMMEDIATE
before power down always performs a graceful shutdown and does not require
the use of the hold-up circuit. Note that SMART attribute 174 "Unexpected Power
Loss" records the number of non-graceful power cycle events.
Table 2-3: STANDBY IMMEDIATE Timings
Power Cycle Endurance
Min
Max
Unit
STANDBY IMMEDIATE to WE completed
15
25
ms